3.
Where is the weight of an object more on earth, Equator or poles? Why?
Answers
Answer:
The weight of an object at the poles is more than the weight of the object at the equator
Explanation:
The shape of the Earth is an ellipsoid such that the distance from the North and South poles to the Earth's center, R₁, is less than the distance from the Equator to the center of the Earth, R₂
The weight of an object is given by the universal gravitational law as follows;
\(Weight = F_{gravity} =G\times \dfrac{M \cdot m}{R^{2}}\)
Where;
\(F_{gravity}\) = The force of gravity = The weight of an object
G = The universal gravitational constant
M = The mass of the Earth
m = The mass of the object
R = The radius of the Earth
Where R₁ < R₂, we have;
The weight at the Poles, W₁ = \(G\times \dfrac{M \cdot m}{R_1^{2}}\)
The weight at the Equator, W₂ = \(G\times \dfrac{M \cdot m}{R_2^{2}}\)
We have;
\(\left(G\times \dfrac{M \cdot m}{R_1^{2}} \right) > \left(G\times \dfrac{M \cdot m}{R_2^{2}} \right) \because R_1 < R_2\)
Therefore, the weight of an object at the poles, W₁, is more than the weight of the object at the equator, W₂
Related Questions
True or False? Define east as the negative direction and west as the positive direction. (a) If a car is traveling east, its acceleration must be eastward. (b) If a car is slowing down, its acceleration may be positive. (c) An object with constant nonzero acceleration can never stop and stay stopped.
Answers
(a) False. If a car is traveling east, its acceleration must be eastward is the wrong statement.
(b) True. If a car is slowing down, its acceleration may be positive right statement.
(c) True. An object with constant nonzero acceleration can never stop and stay stopped is right statement.
Acceleration is what?The pace at which speed changes is known as acceleration. Acceleration typically, but not always, indicates a change in speed. Because the direction of an object's velocity is shifting even while it follows a circular course, it continues to accelerate.
In which scenario, if a car is moving east and we designate east as the positive direction, will the acceleration be negative?The negative acceleration would suggest a slowing of the object if it is moving eastward (has positive velocity).
What are some instances of a positive and a negative acceleration?As a result, accelerating a moving vehicle forward is a positive acceleration, while reversing it is a negative acceleration.
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A standing sound wave in a pipe has five nodes and five antinodes. What is the harmonic number for this standing wave?
Answers
The harmonic number for this standing wave is 9th harmonic. When equal number of nodes and antinodes occur in a close pipe, It result to ninth harmonic.
How to determine the harmonic number?To determine the harmonic number for a standing wave containing both nodes and antinodes requires us to add one to their collective amount.
Thus when examining a particular example featuring five each of these points resulting in an overall count of ten in conjunction with this principle reveals that this specific instance has a working harmony value equivalenting nine.
Therefore, the harmonic number for this standing wave is 9th harmonic.
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Convert 1.5 days to s
Convert 5.2 ft to m
Convert 3600 s to hr
Convert 10.2 m to ft
Convert 305 g to kg
Convert 180 pm to m
Convert 73 kg to g
Convert 1,366 s to min
Convert 86,000 m to km
Please answer these and SHOW ALL WORK, please please please show ALL WORK. Need this done right now please help! Thank you so much!
Answers
According to the question, the answer of the given convert will be: 1.5 days = 36 hours, 5.2 ft = 1.58 m, 3600 s = 1 hr,10.2 m = 33.46 ft, 305 g = 0.305 kg, 180 pm = 0.18 m, 73 kg = 73000 g, 1,366 s = 22.77 min, 86,000 m = 86 km.
What is convert?
Convert is a term used to describe the process of changing one type of data into another. This could include changing a file format, changing a text document into a spreadsheet, or converting a physical document into a digital file. It is a useful tool in many industries and is often used to make sure that data is stored in a standard format, making it easy to access and use. Convert is used in a variety of settings, including media, accounting, and business. It is also used to help ensure data security and accuracy.
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Two rods are made of substance x. both are rubbed with substance y and then interact by ________________ each other if either of them is free to move.
Answers
When two rods made of substance x are rubbed with substance y, they become charged. This process is known as charging by rubbing or charging by friction. When one of the charged rods is free to move, it will be attracted to the other rod, and they will interact by exerting an electrostatic force on each other.
The interaction between the rods is due to the transfer of charged particles, or electrons, from one rod to the other during the rubbing process. As a result, one rod becomes positively charged while the other becomes negatively charged. Opposite charges attract, so the positively charged rod will be attracted to the negatively charged rod. This attraction is the electrostatic force between the two charged rods.
To summarize, when two rods made of substance x are rubbed with substance y and one of them is free to move, they will interact by attracting each other due to the electrostatic force between their opposite charges.
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Is cracking the eggs a physical change or a chemical change and why
Answers
Answer:
Cracking of an egg is a physical change since the egg and the stuff inside does not change but the shape or appearance of the shell changes.
Explanation:
Hope it helps
Define force as the cause of acceleration?
Physics
Answers
Answer:
In short, a force applied to an object at rest causes it to accelerate in the direction of the force.
Explanation:
Newton's second law says that when a constant force acts on a massive body, it causes it to accelerate, i.e. to change its velocity, at a constant rate.
Answer:
As the force acting upon an object is increased, the acceleration of the object is increased.
Explanation:
The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object.
WILL GIVE BRAINLEST How far will a cheetah travel if it runs at 30 m/s for 60s?
Group of answer choices
2 m
1800 m
60 m
5 m
Answers
Answer:
2m
Explanation:
Please help with the following image!
Answers
The kinetic energy of the ball is 450 J.
What is the kinetic energy of the ball?We have to note that the kinetic energy that the body has is the energy that the body has due to the fact that the body is in motion. This is why the object that undergoing kinetic energy must have a velocity of the object.
We have to note that the kinetic energy can be given using the formula;
KE = 0.5mv^2
KE = kinetic energy
m = mass of the object
v = velocity of the object'
Then we have;
KE = 0.5 * 4 * 15^2
KE = 450 J
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What are important things about mental health
Answers
A bike, a truck, and a train—all without passengers, motors, or engines—roll down the same hill. Put the vehicles in order from the least amount of motion energy to the most.
Answers
Answer:
Train Bike Truck
Explanation:
what is the mass of the air in a room measuring sm x 2m x 3m? density of the air is 1.3kg/m³
Answers
Answer:
The mass of the air in a room can be calculated by multiplying the volume of the room by the density of the air. The volume of the room can be calculated by multiplying its length, width, and height. So, if the room has dimensions of 1m x 2m x 3m, its volume would be 1m x 2m x 3m = 6 cubic meters. If the density of the air in the room is 1.3kg/m³, the mass of the air in the room would be 6m³ x 1.3kg/m³ = 7.8kg.
which gas has the greatest kinetic energy at stp? which gas has the greatest kinetic energy at stp? h2 ne ar none of the above (all have the same kinetic energy.)
Answers
None of the gases have the greatest kinetic energy at STP. At STP, all gases have the same temperature and pressure.
How to explain the informationThe average kinetic energy of a gas is directly proportional to its temperature. Since all the gases mentioned (H2, Ne, Ar) are at the same temperature and pressure at STP, they all have the same average kinetic energy.
The equation for the average kinetic energy of a gas is:
KE = 3/2 RT
Where:
KE is the average kinetic energy of a gas
R is the ideal gas constant
T is the absolute temperature of the gas
Since all the gases are at the same temperature, they will all have the same average kinetic energy.
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An anti-aircraft gun fires at an elevation of 60° at an enemy aircraft at 10000m above the ground At what speed must the cannon be shot to hit the plane at that height?(g=10m/s^2)
Answers
Answer:
516m/s^2
Explanation:
Given the following :
Height of aircraft = 10000m
Acceleration due to gravity (g) = 10m/s^2
Angle of projection (θ) = 60°
Height of aircraft = maximum height
Maximum height of a projectile:
H = (u^2sin^2θ) / 2g
Where H = height
u = initial velocity
10000 = [(usinθ)^2] / 2g
10000 = [(u * sin60°) ^2] / 2*10
10000 = (0.866 * u)^2 / 20
20 * 10000 = 0.749956 * u^2
200000 = 0.749956u^2
u^2 = (200000/0.749956)
u^2 = 266,682.31
u = √266,682.31
u = 516.41292
Initial velocity (u) = 516m/s^2
A student designed an experiment to test the hypothesis that even very cold objects like ice contain heat . The student obtained liquid air , at a temperature of 200 , stored in a thermally insulated Under the supervision of the teacher , the student immersed a block of ice at a temperature of 12 C in the liquid air The temperature of the ice was measured over time What is the expected result of the experiment and why ? A The ice will become colder because the extreme difference in temperature will cause the particles of ice to slow down and increase in temperature B The liquid air will boil because the extreme difference in temperature will cause heat to be transferred from the ice to the liquid air and the molecules of the liquid air will begin to leave the liquid The ice will become warmer because the extreme difference in temperature will cause the particles of ice to gain kinetic energy , speed up and increase in temperature D The liquid air will freeze because the extreme difference in temperature will cause heat to be transferred to the ice and the molecules of the liquid air will move
Answers
The expected result of the experiment is that the liquid air will boil because the extreme difference in temperature will cause heat to be transferred from the ice to the liquid air ( B ).
The temperature of the liquid air = - 200 °C
The temperature of the block of ice = - 12 °C
Since they are in a thermally insulated flask, the heat will be transferred until both the objects' temperature becomes equal. So the temperature of liquid air rises and the temperature of ice decreases. The boiling point of liquid air is - 194.35 °C. So the liquid air boils.
Option A would have been correct if the final statement was decrease in temperature and not increase in temperature. Option C is incorrect because the ice becomes colder. Option D is incorrect because liquid air will boil.
Therefore, the expected result of the experiment is that the liquid air will boil because the extreme difference in temperature will cause heat to be transferred from the ice to the liquid air and the molecules of the liquid air will begin to leave the liquid ( B ).
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the form of coulomb's law is very similar to that for newton's law of universal gravitation. what are the differences between these two laws? compare also gravitational mass and electric charge.
Answers
Coulomb's law and Newton's law of universal gravitation are both fundamental laws of physics that describe the interactions between objects.
What iS Coulomb's Law?
Coulomb's law is a fundamental law of electrostatics that describes the interaction between electric charges. It states that the electrostatic force between two point charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
The mathematical form of Coulomb's law is:
F = kq₁q₂ / r²
Although they are similar in form, there are some key differences between these laws:
Nature of the Force: The most obvious difference is that Coulomb's law describes the electrostatic force between electric charges, while Newton's law of universal gravitation describes the gravitational force between objects with mass.
Magnitude of the Force: The electrostatic force between two charged particles is generally much stronger than the gravitational force between two massive objects. This is because the electric charge has a stronger fundamental force than mass.
Type of Interaction: Electric charges can be either positive or negative, and like charges repel while opposite charges attract. In contrast, all masses attract each other through gravity, with no repulsion.
Inverse-Square Relationship: Both laws have an inverse-square relationship, which means that the force decreases with the square of the distance between the objects. However, the constant of proportionality is different for the two laws, reflecting the differences in the nature of the force.
Gravitational Mass vs Electric Charge: Gravitational mass and electric charge are two different properties of matter. Gravitational mass determines the strength of an object's gravitational attraction to other objects, while electric charge determines the strength of the object's interaction with other charged objects.
Overall, while the forms of Coulomb's law and Newton's law of universal gravitation are similar, the differences between the two laws reflect the fundamentally different nature of the forces and properties they describe.
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If the maximum tension in rope 1 is 18000 N calculate maximum acceleration of the helicopter before the rope breaks. The mass being held by rope 1 = 900kg
Answers
\(\begin{gathered} Given: \\ mass\text{ of the object=900Kg} \\ maxmum\text{ tension =18000N} \end{gathered}\)\(to\text{ find: the maximum acceleration of the helicopter}\)\(\begin{gathered} from\text{ Newton's second law of motion} \\ F=ma \\ F=\text{ net force on the object } \\ a=acceleration\text{ of the object} \end{gathered}\)\(\begin{gathered} force\text{ working on the mass 900Kg object} \\ mg\text{ in downward direction } \\ tension\text{ T in upward direction } \\ m=mass\text{ of the object.} \\ a\text{ = acceleration of the object} \end{gathered}\)\(\begin{gathered} applying\text{ Newton's law} \\ T-mg=ma \\ (since\text{ the acceleration is in the upward direction\rparen} \end{gathered}\)\(\begin{gathered} since\text{ due to the tension force the object is going in the upward } \\ direction\text{ and the maximum tension force can be 18000N if the tension } \\ increases\text{ beyond this value the rope will break. } \end{gathered}\)\(\begin{gathered} put\text{ T=18000N in the above equation} \\ 18000N-900Kg*9.8m\text{/s}^2=900Kg*a \\ 9180N=900Kg*a \\ a=\frac{9180}{900}m\text{/s}^2 \\ a=10.2\text{ }m\text{/s}^2 \end{gathered}\)
so when the acceleration of the helicopter will be 10.2 m/s² then the rope
will break down.
What forces come in pairs? Give an example help ASAP
Answers
x Methane, has a molar mass of 16.03 grams per mole. How many particles o of methane are present in 120 grams?
Answers
In order to determine the number of particles of methane, use the following expression:
number of particles = (mass /molar mass ) x Avogadro's number
in this case, you have:
molar mass = 16.03 grams/mole
mass = 120 grams
Avogadro's number = 6.02*10²³ particles/mol
replace the previos values of the parameters into the formula for the number of particles:
number of particles=(120 grams/ 16.03 grams/ mol)x(6.02*10²³particles/mol)
= (7.46 mol) x (6.02*10²³ particles/mol)
= 4.50*10²⁴ particles
Hence, the number of particles of methane, in 120 grams, is 4.50*10²⁴
describe how you would explain distance moved on a line
Answers
Answer:In both graphs, speed will be measured in meters/second.
In graph A, the object travelled a distance of 40 meters in 4 seconds
In graph B, the object is at rest for 5 seconds.
In both graphs A and B, the speed will be measured in meters/second because both graph shows the distance at one side and time on another side which is required for determining speed. In graph A, the object travelled a distance of 40 meters in 4 seconds due to moving with the speed of 10 meters in one second.
In graph B, the object is at rest for 5 seconds after achieving 25 meters in 5 seconds. The object in graph B was moving at a lower speed than the object in graph A i.e. in graph A the object moves 10 meters in one second whereas in graph B the object moves 5 meters in one second.
Explanation:
which of the following statements are true? beta radiation has the highest ionizing power of any radioactivity none of these are true gamma rays have the lowest ionizing power of any radioactivity beta emitters will do more damage than alpha emitters within the body. alpha radiation has the highest penetrating power of any radioactivity
Answers
Out of the given statements, only one statement is true - "beta emitters will do more damage than alpha emitters within the body".
This is because beta particles are smaller and faster than alpha particles, and can penetrate deeper into the body, causing more damage to tissues and organs.
The other statements are false. Beta radiation does not have the highest ionizing power of any radioactivity, as alpha particles have a greater ionizing power due to their larger size and charge.
Gamma rays do not have the lowest ionizing power, as they have a higher energy and can penetrate through thick materials.
Lastly, alpha radiation has the lowest penetrating power of any radioactivity, as they are large and heavy and cannot travel far through materials.
It is important to note that all forms of radiation can be harmful to the body and should be handled with caution.
Understanding the different types of radiation and their properties can help in minimizing exposure and protecting oneself from the harmful effects of radiation.
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Percent Yield Lab Report
Instructions: For this investigative phenomenon, you will need to determine the percent yield of magnesium oxide from the given reaction to determine if it is a useful commercial process. Record your data and calculations in the lab report below. You will submit your completed report.
Title:
Objective(s):
Hypothesis:
No hypothesis needed for this lab. Your theoretical yield calculation serves as your prediction for what you expect the lab to produce, and that will be determined later in the lab.
Procedure:
Access the virtual lab. Because this lab is virtual, summarize the steps used to collect your data. In addition, list and explain your controlled variables, independent variable, and dependent variable for this lab.
Materials:
Percent Yield Virtual Lab
Variables:
Remember, controlled variables are factors that remain the same throughout the experiment. An independent (test) variable changes so that the experimenter can see the effect on other variables. The dependent (outcome) variable will change in response to the test variable.
Controlled variables:
Independent Variable:
Dependent Variable:
Summary of Steps:
Data:
Type the data in the data table below. Don’t forget to record measurements with the correct number of significant figures. Hint: Using the same instrument, you should have the same number of digits to the right of the decimal.
Data
Trial 1
Trial 2
Mass of empty crucible with lid
26.698(g) 26.691(g)
Mass of Mg metal, crucible, and lid
27.040(g) 27.099(g)
Mass of MgO, crucible, and lid
27.198(g) 27.361(g)
Calculations:
Show your calculations for each of the following. Remember, calculations should follow rules for significant figures.
Write the balanced chemical equation for the reaction you are performing.
Subtract the mass of the crucible and lid (row 1 in the chart) from the total mass of Mg, crucible, and lid (row 2 in the chart) to find the mass of magnesium for each trial.
Trial 1:
Trial 2:
Subtract the mass of the crucible and lid (row 1 in the chart) from the total mass of MgO, crucible, and lid (row 3 in the chart) to find the mass of magnesium oxide for each trial. This is the actual yield of magnesium oxide for each trial.
Trial 1:
Trial 2:
Magnesium is the limiting reactant in this experiment. Calculate the theoretical yield of MgO for each trial.
Trial 1:
Trial 2:
Determine the percent yield of MgO for your experiment for each trial.
Trial 1:
Trial 2:
Determine the average percent yield of MgO for the two trials.
Conclusion:
Write a conclusion statement that addresses the following questions:
Explain why the product had a higher mass than the reactant, and how this relates to conservation of matter.
What sources of error may have contributed to the percent yield not being 100 percent? (Think about things that may have led to inaccurate measurements or where mass of the product could have been lost if this experiment was conducted in a physical laboratory.)
How do you think the investigation can be explored further?
Post-Lab Reflection Questions
Answer the reflection questions using what you have learned from the lesson and your experimental data. It will be helpful to refer to your chemistry journal notes. Answer questions in complete sentences.
When conducting this experiment, some procedures call for heating the substance several times and recording the mass after each heating, continuing until the mass values are constant. Explain the purpose of this process and how it might reduce errors.
Your company currently uses a process with a similar cost of materials that has an average percent yield of 91 percent. If the average percent yield of this process is higher than that, this could save the company money. What is your recommendation to the company? Please support your recommendation using your data, calculations, and understanding of stoichiometry gathered from this lab.
Answers
Based on the data obtained from the reaction, the following conclusions can be made;
according to the law of conservation of mass, the mass of the product was higher than the reactant because of the mass of oxygen added during the combustion.the percent yield is less than 100% because of loss in mass of either reactants or products.the errors could have occurred during the weighing and transfer of reactants and productsrepeated measurements are required in order to improve accuracyWhat is the percent yield of the reaction?Equation of the reaction is given below:
2 Mg + O₂ ----> 2 MgOTrial 1
Mass of empty crucible with lid = 26.698 (g)
Mass of Mg metal, crucible, and lid = 27.040 (g)
Mass of MgO, crucible, and lid = 27.198 (g)
Mass of metal = 27.040 - 26.698 = 0.342
Mass of MgO = 27.198 - 26.698 = 0.500
Moles of Mg usedmoles of Mg = mass/molar mass
molar mass of Mg = 24 gmoles of Mg = 0.342/24 = 0.01425
Moles of MgO expectedBased on the equation of reaction;
moles of MgO expected = 0.01425
moles of MgO produced = mass/molar mass
molar mass of MgO = 40 g/molmoles of MgO produced = 0.500/40 = 0.0125
Percent yieldPercent yield = (moles of MgO produced/moles of MgO expected) * 100%Percentage yield = 0.0125/0.01425 * 100%
Percent yield of MgO = 87.7%
Trial 2
Mass of empty crucible with lid = 26.691 (g)
Mass of Mg metal, crucible, and lid = 27.099 (g)
Mass of MgO, crucible, and lid = 27.361 (g)
Mass of metal = 27.099 - 26.691 = 0.408
Mass of MgO = 27.361 - 26.691 = 0.670
Moles of Mg usedmoles of Mg = mass/molar mass
molar mass of Mg = 24 gmoles of Mg = 0.408/24 = 0.0170
Moles of MgO expectedBased on the equation of reaction;
moles of MgO expected = 0.0170
moles of MgO produced = mass/molar massmolar mass of MgO = 40 g/mol
moles of MgO produced = 0.670/40 = 0.01675
Percent yieldPercent yield = (moles of MgO produced/moles of MgO expected) * 100%Percent yield = 0.01675/0.0170 * 100%
Percent yield of MgO = 98.5%
Average percent yield = (87.7 + 98.5)% / 2
Average percent yield = 89.0%
Based on the data obtained from the reaction, the following conclusion can be made;
according to the law of conservation of mass, the mass of the product was higher than the reactant because of the mass of oxygen added during the combustion.the percent yield is less than 100% because of loss in mass of either reactants or products.the errors could have occurred during the weighing and transfer of reactants and productsrepeated measurements are required in order to improve accuracyLearn more about law of conservation of mass at: https://brainly.com/question/1824546
Answer:
90.3
Explanation:
Edge 2022
Do you think a circuit breaker is wired in series or parallel? Why?
Answers
Answer:
I think it's in a series
Explanation:
is this an aviation class
A table tennis ball is dropped onto the flour from a height
€ 4m and It rebounds to a height of 3m. If the time of
ontact with the floor is o.ols, what is the magnitude and
irection of the acceleration during the contact.
Answers
The acceleration of the ball during the contact is 1652 m/s^2 in upward direction.
What is acceleration?
Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).
The velocity of the ball before hitting the floor in downward direction:
u = √(2gs)
= √(2×9.8×4) m/s
= 8.85 m/s.
The velocity of the ball after hitting the floor in upward direction:
v = √(2gs)
= √(2×9.8×3) m/s
= 7.67 m/s.
Hence, the acceleration of the ball during the contact in upward direction is: a = change in velocity/time duration
= (7.67 - (-8.85))/0.01 m/s^2
= 1652 m/s^2
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A 70kg bicyclist (including the bicycle) is pedaling right with a constant speed despite
experiencing a 50N drag. Neglect any friction impeding her motion.
What is the magnitude of the net force on the bicyclist?
How much force is her pedaling generating?
Answers
Answer:There are total four forces acting on the bicyclist namely, gravitational force, normal force, pushing force and air drag.
The magnitude of net force acting on the bicyclist is 165 N.
The required magnitude of force generated for the pedaling is of 225 N.
Given data:
The mass of bicyclist is, m = 75.0 kg.
The magnitude of acceleration is, .
The magnitude of drag force is, F = 60.0 N.
(1)
There are in total 4 forces acting on the bicyclist:
The gravitational force on the bicyclist, acting vertically downward, of magnitude , where m is the mass of the bicyclist and g is the acceleration due to gravityThe normal force exerted by the floor on the bicyclist and the bike, N, vertically upward, and of same magnitude as the gravitational forceThe force of push F", acting horizontally forward, given by the push exerted by the bicyclist on the pedalsThe air drag, F, of magnitude F = 60.0 N, acting horizontally backward, in the direction opposite to the motion of the bicyclist
(2)
The magnitude of net force acting on the bicyclist is given as,
Thus, the magnitude of net force acting on the bicyclist is 165 N.
(3)
We need to find the forward force of push, F'', which is actually the force generated during pedaling.
Then the expression for the forward pushing force F" is given as,
Thus, we can conclude that the force generated for the pedaling is of 225 N.
Explanation:
The magnitude of the net force on the bicyclist was 0 N.
Her pedaling is generating a force of 50 N in opposite of the drag force .
What is force?Force is defined in physics as: the push or pull on an object with mass that causes it to change velocity. Force is an external agent that can change the state of rest or motion of a body. It has a magnitude as well as a direction.
A spring balance can be used to calculate force.
As the bicyclist (including the bicycle) is pedaling right with a constant speed, the magnitude of the net force on the bicyclist was = mass × acceleration
= 70 kg × 0 m/s²
= 0 N.
Again her pedaling is generating a force = drag force = 50 N in opposite of the drag force . So that, net force on it becomes zero.
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If the inside of a container has a surface area of 20cm², what will be the pressure on each square inch of the container if 117.6kg of force are applied to the container?
Answers
Answer:
Explanation:
given :-
force applied = 117.6N
Area = 20 m^2
Pressure =?
solution:-
Pressure = Force / Area
= 117.6 N / 20 m^2
= 5.88 Pascals
Hope it helps :D!
Explanation:
Velocity is different from speed because it has size and what?
Answers
Answer:
direction
Explanation:
Which statement is correct about two objects that have gravitational force?
They have mass.
They move slowly.
They are round in shape.
They have high temperature.
Answers
Answer:
1 and 2
Explanation:
The formula itself has nothing to do with shape or temperature. The formula does have mass and the speed depends on the how great the mass/radius is.
They move slowly
A and B
A 4. 0-kilogram object is accelerated at 3. 0 meters per second^2 north by an unbalanced force. The same unbalanced force acting on a 2. 0-kilogram object will accelerate this object toward the north at.
Answers
According to the given statement 6.0 m/s² accelerate this object toward the north at.
What is a acceleration explain?Velocity: the rate at which direction and velocity of a moving item vary over time. When something moves faster or slower, it is considered to be accelerating. Motion on a circle increases even while the speed remains constant because the vector will always be changing.
Briefing:The force is directly related to the rate of change in momentum, according to Newton's second law of motion.
F is the energy, m is the mass, and an is the acceleration, so F = ma.
F = 4 × 3
= 12 Newtons
The same force acts on a 2.0 kg object
F = ma
a = F/ m
= 12 /2
= 6.0 m/s²
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A plane is flying horizontally with speed 171 m/s at a height 6520 m above the ground, when a package is dropped from the plane. The acceleration of gravity is 9.8 m/s 2 . Neglecting air resistance, when the package hits the ground, the plane will be 1. directly above the package. 2. ahead of the package. 3. behind the package.
Answers
Answer:
2. Ahead of the package
Explanation:
The plane is going straight without stopping while the package is going straight down.
a circuit contains only a 12-v battery and a resistor. part a if a 1.6-a current flows through the resistor, how much power does the resistor dissipate?
Answers
The resistor dissipates approximately 19.2 watts of power when a current of 1.6 amps flows through it in a circuit containing only a 12-volt battery and a resistor.
The power dissipated by a resistor can be calculated using the
formula P = I²R, where P is power, I is current, and R is resistance.
Given:
Battery voltage (V) = 12 V
Current (I) = 1.6 A
To find the power dissipated by the resistor, we need to know the resistance of the circuit. Without this information, we cannot provide a numerical answer.
However, we can use Ohm's Law, which states that the current flowing through a resistor is proportional to the voltage across it, to determine the resistance of the circuit. Ohm's Law is expressed as V = IR, where V is voltage and R is resistance.
Substituting the given values:
V = IR
12 V = 1.6 A x R
Solving for R:
R = 12 V / 1.6 A
R ≈ 7.5 Ω
Now we can use the power formula to calculate the power dissipated by the resistor:
P = I²R
P = (1.6 A)² x 7.5 Ω
P ≈ 19.2 W
Therefore, the resistor dissipates approximately 19.2 watts of power when a current of 1.6 amps flows through it in a circuit containing only a 12-volt battery and a resistor.
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