Acceleration due to gravity is 9.8 m/s2 on the surface of Earth, and at orbits 200 miles above the surface of Earth, where the space shuttle orbits, the acceleration is
Answers
Acceleration due to gravity is 9.8 m/s2 on the surface of Earth, and at orbits 200 miles above the surface of Earth, where the space shuttle orbits, the acceleration is 8.78 m/s².
What is gravitational force?The reason for this difference in acceleration is that the gravitational force on an object is inversely proportional to the square of the distance between them.
Thus, the further an object is from the Earth's surface, the weaker the gravitational force acting on it. This is why objects in orbit around the Earth experience less acceleration due to gravity than objects on the surface of the Earth.
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Related Questions
A mixture of gasoline vapor and air is placed in an engine cylinder. The piston has an area of 7.4 × 10^−3 m^2 and is displaced inward by 7.2 × 10^−2 m. If 9.5 × 10^5 Pa of pressure is placed on the piston, how much work is done during this process? Is work being done on or by the gas mixture?
Answers
The work done during the process is 506.2 J.
What is the work done during the process?
The work done during the process is calculated by applying the following equation.
W = PΔV
W = P ( Vf - Vi )
where;
P is the constant pressure of the systemVf final volume of the systemVi is the initial volume of the systemThe final volume of the system is calculated as follows;
Vf = A x h
Vf = 7.4 x 10⁻³ m² x 7.2 x 10⁻² m
Vf = 5.33 x 10⁻⁴ m³
W = 9.5 x 10⁵ Pa x ( 5.33 x 10⁻⁴ m³ - 0 )
W = 506.2 J
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Question 13 (1 point)
A 24 kg crate is pulled along a horizontal surface by a force of 95 N. The force is applied at an angle of 33° with the horizontal. The
coefficient of kinetic friction is 0.21. What is the acceleration of the crate?
Round to 2 decimal places. Units go in the second blank.
Blank 1:
Blank 2:
Answers
Answer:
papa's donuteria
Explanation:
:rawr:
a yellow ball is launched exactly horizontally at height h above a horizontal field. at the exact instant that the ball is launched, a red ball is simply dropped from height h. 1) which ball hits the ground first? 2) what effect does the initial horizontal velocity have
Answers
1. The ball hits the ground first is none because both balls will hit the ground together.
2. The initial horizontal velocity will have an affect on the horizontal distance traveled by the yellow ball.
The red ball simply dropped from a height.
The initial speed is zero.It will experience a free-fall motion.It will move downward with the same acceleration as the acceleration due to gravity on earth (a = g)The yellow ball is launched exactly horizontally at height h.
It has the initial speed.It will experience a projectile motion.The track will be in the form of a curve.It will move to the x-axis and y-axis.In the y-axis, the free-fall motion applies.In the x-axis, the uniform motion applies.The velocity is always the same.
d = v × t
d = horizontal distances (m)
v = the initial horizontal velocity (m/s)
t = time (s)If the initial horizontal velocity is greater, then the distance traveled will also be greater.
At y-axis
The red ball and the yellow ball experience a free-fall motion.The initial height for them is equal.v₁ = the initial speed = 0d = distance = hAccording to non-uniform motiond = v₁ t + 0.5 at²
h = 0.5 × g × t²
t² = 2h/gThe time needed for the two balls to reach the height h is the same.The two balls will hit the ground together.
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if you stare at a red x and then shift your eyes to a white surface, what happens to the image of the x?
Answers
If you stare at a red object and immediately look at a white area afterward, you will see an afterimage that is the same size and shape, but it is blue-green, or cyan, in color. '
This is known as the opponent process theory
State the opponent process theory?The opponent process theory of color vision says that color is processed in pairs (red-green, yellow-blue, and black-white.)
It means that Light that stimulates one half of the pair inhibits the other half.
In conclusion, this opponent process is thought to be responsible for our perception of color and explains why people experience afterimages.
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The following figures show the spectral types of four main-sequence stars. Rank them based on the time each takes, from longest to shortest, to go from a protostar to a main-sequence star during the formation process.
Longest to shortest time:
-M6
-G2
-A5
-O9
Answers
G2-type stars take the longest time, while O9-type stars take a shorter time to go from a protostar to a main-sequence star during the formation process.
Based on the spectral types provided, the order of the stars from the longest to the shortest time taken to go from a protostar to a main-sequence star during the formation process is as follows:
1. G2
2. O9
- Stars with lower masses, like G2-type stars, take longer to form because they have a lower rate of fusion and lower pressure at their cores.
- On the other hand, O9-type stars have a higher mass, which results in a higher rate of fusion and higher pressure at their cores.
This means they will form faster than G2-type stars.
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Five balls move through the air as shown in the figure . All five have the same size and shape. Air resistance is not negligible. Rank in order, from largest to smallest, the magnitudes of the accelerationsa aa to ae. Some may be equal. m50g vy=0 m100g vy=0 m50g vy=-20m/s m100g vy=-20m/s m50g vy=20m/s
Answers
To rank the magnitudes of the accelerations, we need to consider the weight of each ball and the direction of its velocity.
The acceleration due to gravity, g, is the same for all five balls since they have the same size and shape. Therefore, the weight of each ball is proportional to its mass:
- Ball C (m50g vy=-20m/s) and Ball D (m100g vy=-20m/s) have the same weight (100 N) and are moving downward, so they have the largest magnitude of acceleration due to gravity (a = g = 9.8 m/s^2) in the downward direction.
- Ball E (m50g vy=20m/s) is moving upward and has the smallest weight (50 N), so it has the smallest magnitude of acceleration due to gravity (a = -g = -9.8 m/s^2) in the upward direction.
- Ball A (m50g vy=0) and Ball B (m100g vy=0) are at rest, so their acceleration due to gravity is zero.
Air resistance is not negligible, so it will affect the motion of the balls. However, we cannot determine the magnitude of the air resistance without more information about the speed and shape of the balls.
Therefore, the ranking of the magnitudes of the accelerations a is:
D > C > E > A = B
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Which of the infrared regions is considered to be the fingerprint region? Select one: O A. 2200 nm · 1000 nm O B. 4000 nm 1400 nm O C. 1400 nm --400 nm O D. 1400 cm-1 - 400 cm-1 O E. 4000 cm n-1 - 1400 cm-1
Answers
The infrared spectrum is divided into three regions: the near-infrared, mid-infrared, and far-infrared regions. Among these, the mid-infrared region is the most widely used for molecular identification. Within the mid-infrared region, the fingerprint region is considered to be the range between 4000 cm-1 to 1400 cm-1.
This range is known as the fingerprint region because it contains a unique set of absorption bands that are specific to the functional groups present in a molecule. These absorption bands are like fingerprints, which can be used to identify and differentiate between different molecules.
The fingerprint region is particularly useful in identifying complex molecules, such as proteins, carbohydrates, and nucleic acids. Therefore, the fingerprint region is an essential tool in the field of infrared spectroscopy, which is widely used in chemical and biomedical research.
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d) The plastic tube gains a charge of 4.3 mC.
The energy stored on the tube is 3.7 J.
Calculate the voltage between the plastic tube and the metal mast.
Answers
0.8604651 Volts are present between the metal mast and the plastic tube. An electrical or electronic circuit's voltage, measured in volts, is the difference in electrical potential between two points.
Voltage is a measurement of what?An electrical or electronic circuit's voltage, measured in volts, is the difference in electrical potential between two points. It gauges how much power an electric field could potentially exert to generate current in an electrical conductor.An electrical circuit's power source exerts pressure known as voltage on charged electrons (current), causing them to flow through a conducting loop and perform tasks like lighting a lamp. Voltage is measured in volts and is simply equal to pressure (V).The electric potential difference between two places is measured in terms of voltage. Simple electric charge flow rate is known as current.Explanation:
Voltage = energy/charge
= 3.7/4.3
= 0.8604651.
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Bert is standing on a ladder picking apples in his grandfather's
orchard. As he pulls each apple off the tree, he tosses it into a
basket that sits on the ground 3.0 m below at a horizontal
distance of 2.0 m from Bert. How fast must Bert throw the apples
(horizontally) in order for them to land in the basket?
u die medios aqoob bat
homosa
Answers
Answer:
1/2 g t^2 = 3 m calculate time for apple to fall 3 m
t = (6 / 9.80)^1/2 = .78 s time for apple to fall 3 m
Sx = Vx t horizontal distance traveled
Vx = 2m / .78 s = 2.6 m/s horizontal speed needed
What does it mean if electric field lines are close together versus farther apart ?
Answers
Answer:
As a result, if the field lines are close together (that is, the field line density is greater), this indicates that the magnitude of the field is large at that point. If the field lines are far apart at the cross-section, this indicates the magnitude of the field is small. (Figure) shows the idea.
Explanation:
the great pyramid of khufu (giza, egypt) is about 140m tall. How much work would be required to raise an average - sized pyramid black (2.5 tons) to this height?
Answers
Which of the following products will have elastic demand (alcohol, gasoline, travel souvenirs, cigarettes)
Answers
The product among alcohol, gasoline, travel souvenirs, cigarettes that will have elastic demand is cigarettes.
What is elastic demand?Elastic demand refers to a situation in which a change in the price of a good or service results in a more significant change in the amount demanded. When the percentage change in quantity demanded is greater than the percentage change in price, the demand for the product is said to be elastic.
When the quantity demanded of a product decreases significantly when the price rises, the demand for the product is said to be elastic. Similarly, when a slight change in price causes a significant change in quantity demanded, the demand is said to be elastic. Conversely, if a product's price increases by a small percentage, and the demand for the product decreases by a smaller percentage, the demand for the product is said to be inelastic.
Cigarettes, of all the products listed above, are likely to have an elastic demand.
This is because smokers who are addicted to cigarettes are more likely to quit smoking or reduce their consumption in response to an increase in the price of cigarettes compared to the other goods.
Thus, a slight increase in the price of cigarettes is likely to cause a significant decrease in the number of cigarettes consumed.
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the distance between the particles in steam is ______ the distance between the particles in liquid water,, a) greater than b) less than c) the same as
Answers
The distance between the particles in steam is greater than the distance between the particles in liquid water.
What is a steam?Steam is water in the gas phase.
The distance between the molecules of a steam (gaseous phase) are extremely large compared to liquid water (liquid phase).
Thus, the distance between the particles in steam is greater than the distance between the particles in liquid water.
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Which statement describes how the atoms in a conducting wire are organized?(1 point)
Negatively charged valence electrons are packed in a repeating pattern, and positively charged nuclei flow freely.
Negatively charged valence electrons are packed in , , a repeating, , pattern, and positively charged nuclei flow freely, .
The positively and negatively charged particles in the atoms are randomly organized and move freely.
The positively and negatively charged particles in the atoms are randomly organized and move freely, .
Both the positively and negatively charged particles in the atoms move freely.
Both the positively and negatively charged particles in the atoms move freely, .
Positively charged nuclei are packed in an organized pattern, and the negatively charged valence electrons flow freely.
Answers
Answer:
Positively charged nuclei are packed in an organized pattern, and the negatively charged valence electrons flow freely.
Explanation:
The atoms in a conducting wire are organized by the Positively charged
nuclei being packed in an organized pattern, and the negatively charged
valence electrons flow freely.
A conducting wire involves the flow of electric current between the
atoms.The electric current excites the electrons thereby resulting in their flow .
The valence electrons are affected because they haven't achieved an
octet configuration and aren't stable which gives rise to their free flow
within the wire.
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I need the right answer ASAP NO LINKS!!!
Answers
The first one!
Hope this helps pls mark as brainliest :)
Answer:
Models change to accommodate new discoveries.
Explanation:
Scientific models are based on current scientific knowledge. This means that when new discoveries are made they are subject to change.
If no heat is transferred during the following compression of a gas, what is the sign of w, and does internal energy of the enclosed gas increase, decrease, or remain constant?.
Answers
Answer: increase
Explanation:
increase of compression make it hot
V1 = 7.5L
P1= 100.0 kPa
v2=11L
P2=
solve for P2
Answers
Answer:
Formula = P1V1 = P2V2
7.5 x 100000 = p2 X 11
750000 / 11 = P2
P2 = 68181.81 Pa
or
= 68.18181 kPa
Explanation:
How is the answer D?
Answers
The graph that corresponds to 0.1 s in one complete cycle is graph D.
option D is the correct answer.
What is the period of a wave?The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years.
Also, the period of a wave is the amount of time it takes for a wave to complete one wave cycle or wavelength.
From the given parameter, the coil rotates 10 times in one second. The period of the coil is calculated as;
Period = 1 s / 10
Period = 0.1 s
From the graphs, the only option that has one complete cycle in one second is option D.
Check option D, half cycle is 0.05 s and one full cycle is 0.1 s.
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please help its in science CER, 30 points
Answers
Answer:We have seasons because the earth is tilted (wonky) as it makes its yearly journey around the sun. The Earth's axis is tilted at an angle of 23.5 degrees. This means that the Earth is always "pointing" to one side as it goes around the Sun.
Explanation:
got this from the internet
what are the three essential diagnostic features of anorexia nervosa
Answers
1. Restriction of energy intake: This involves significantly limiting the amount of food intake, leading to low body weight in relation to age, sex, developmental trajectory, and physical health. It is often accompanied by a fear of gaining weight or becoming fat.
2. Intense fear of gaining weight or becoming fat: Individuals with anorexia nervosa have an excessive and persistent fear of gaining weight, even when they are significantly underweight. They may have distorted body image perceptions and a preoccupation with their shape and weight.
3. Disturbance in self-perceived weight or shape: Anorexia nervosa is characterized by a persistent lack of recognition of the seriousness of low body weight and its impact on health. Despite being underweight, individuals with anorexia may still perceive themselves as overweight or have a distorted body image.
These diagnostic features are crucial for identifying and diagnosing anorexia nervosa, but it is important to consult a qualified healthcare professional for a comprehensive evaluation and diagnosis.
The three essential diagnostic features of anorexia nervosa, as defined by the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), are:
Restriction of energy intake relative to requirements: This refers to the persistent limitation of food intake, leading to significantly low body weight. Individuals with anorexia nervosa often engage in severe dieting, calorie counting, Intense fear of gaining weight or becoming fat: People with anorexia nervosa have an intense and irrational fear of gaining weight, even when they are already significantly underweightDisturbance in self-perceived weight or shape: DSM-5 An essential feature of anorexia nervosa is the presence of a distorted perception of one's body weight or shape.It is important to note that these diagnostic features must be present and significantly impair the individual's functioning in order to meet the criteria for anorexia nervosa. Additionally, there may be other associated features and behaviors,
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A plane at a speed of 255 m/s with a mass of 2.15 × 10³ kg.
Answers
According to the question the force acting on the plane id 547,750 N.
What is force?Force is a fundamental concept in physics that describes the interaction between two objects. It is defined as an influence that changes the motion of an object, either by accelerating, decelerating, or changing the direction of a body. Forces can be either contact forces, such as friction or air resistance, or non-contact forces, such as gravity or magnetism. Forces can also be internal, such as chemical bonds, or external, such as the force of an object pushing against another. The SI unit for force is the newton (N). Forces can be used to cause motion or to prevent motion. In addition, forces can be used to change the shape or orientation of an object. Force is a vector quantity, meaning that it has both magnitude and direction.
The force acting on the plane can be calculated using Newton's second law:
Force = Mass x Acceleration
Force = 2.15 × 10³ kg x (255 m/s / s)
Force = 547,750 N
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Liquid ammonia flows through a pipe at a mass flow rate of 100
kg/s .
If the cross-sectional area of the pipe is 0.01
m^2, determine the flow rate of momentum through the
pipe.
Answers
The momentum flow rate through the pipe carrying liquid ammonia is 1 × \(10^6\) kg·m/s.
The flow rate of momentum (Ṁ) through the pipe can be calculated by multiplying the mass flow rate (ṁ) by the velocity (v). The speed can be determined using the equation v = ṁ / (ρA), where ρ is the density of the liquid ammonia and A is the pipe's cross-sectional area.
Given:
ṁ = 100 kg/s
A = 0.01 m²
Assuming the density (ρ) of liquid ammonia is 700 kg/m³, we can calculate the velocity (v):
v = ṁ / (ρA)
v = 100 kg/s / (700 kg/m³ × 0.01 m²)
v = 10000 m/s
Now, we can calculate the flow rate of momentum (Ṁ):
Ṁ = ṁv
Ṁ = 100 kg/s × 10000 m/s
Ṁ = 1 × \(10^6\) kg·m/s
Therefore, the momentum flow rate through the pipe is 1 × \(10^6\) kg·m/s.
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an electron is released from rest at the negative plate. with what speed will it strike the positive plate?
Answers
Speed will it strike the positive plate 74.736*10^6 m/s
r = distance = 3.7 mm
a) E = electric field between plates =
E = 38*10^-6 / 8.85*10^-12
= 4.293*10^6 N/C
from E = -dV / dr
dV = potential difference . take magnitude:
dV = E*dr
= 4.293*106*3.7*10-3
= 15.887 *103V
b) from F ( force) = q*E
also F = ma
so ma = qE
a( acceleration) = qE/ m
q = charge on electron, m= mass
a = 1.6*10^-19*4.293*10^6 / 9.1*10^-31
a = 7.548*1017 m/s2
u = initial velocity = 0 m/s ( at rest)
V = final velocity= ?, S = distance = r = 3.7 mm
v^2 = u^2+2as
putting values we get
Speed will it strike the positive plate 74.736*10^6 m/s
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Date
Points 100
Submitting an external tool
If two objects have the same density, they must have the same
a
mass
b volume
C length to width ratio
d mass to volume ratio
nt?
Check it
Answers
Answer:
B
Explanation:
thanks me later
thanks for 5 points love you
hehehehe
A hover board is moving at 6 m/s . If it slows down at a rate of -3 m/s per second, how long is the board in the air before coming to rest? Round to 4 decimal places if necessary
Answers
Explanation
a uniformly accelerated motion is the one in which the acceleration of the particle throughout the motion is uniform,to fidn the time take we can use the formula:
\(\begin{gathered} t=\frac{v_f-v_1}{a} \\ where \\ v_f\text{ is the final velocity} \\ v_{i\text{ }}\text{ is the initail velocity} \\ a\text{ is the acceleration, so} \end{gathered}\)Step 1
a)Let
\(\begin{gathered} v_i=6\text{ }\frac{m}{s} \\ v_f=0(\text{ rest\rparen} \\ a=-3\frac{m}{s^2} \end{gathered}\)b) now, replace
\(\begin{gathered} t=\frac{v_{f}-v_{1}}{a} \\ t=\frac{0-(-6\frac{m}{s})}{3\frac{m}{s}} \\ t=2\text{ seconds} \end{gathered}\)therefore, the answer is 2 seconds
I
a pressure vessel is protected by a thermal shield. assuming for simplicity pure gamma radiation of 5.0 mev/photon and 1014 photons/cm2-sec flux reaching the shield, calculate: a) the thickness (in inches) of an iron thermal shield that would reduce the above flux by 90%, and (1 point)
Answers
The thickness of an iron thermal shield that would reduce the given gamma radiation flux by 90% is approximately 3.3 inches. The given information includes the radiation energy and flux, and the desired reduction percentage of the shield.
a) To calculate the thickness of the iron thermal shield that would reduce the gamma radiation flux by 90%, we need to use the Beer-Lambert law:
I = I0 * e^(-μx)
where:
I0 is the initial radiation intensity
I is the radiation intensity after passing through a thickness x of shielding material
μ is the linear attenuation coefficient of the shielding material
We want to find x, the thickness of the iron shield. We know the initial radiation intensity I0 = (5.0 MeV/photon) * (1.6 x 10⁻¹³ J/MeV) * (1014 photons/cm²-sec) = 8.0 x 10⁻⁷ J/cm²-sec. We also know that we want to reduce the intensity by a factor of 10, so I = 0.1 I0. We can rearrange the Beer-Lambert law to solve for x:
x = -ln(I/I0) / μ
x = -ln(0.1) / (7.5 ft⁻¹ * 0.3048 m/ft) = 0.145 m = 5.7 inches
Therefore, the thickness of the iron thermal shield that would reduce the gamma radiation flux by 90% is 5.7 inches.
b) To calculate the heat generated in the thermal shield, we need to consider the energy absorbed by the shield due to the gamma radiation. The energy absorbed per unit area per unit time is given by:
Q = μ * I
where Q is the heat generated in J/cm²-sec, μ is the linear attenuation coefficient in cm⁻¹, and I is the initial radiation intensity in photons/cm²-sec. We can convert this to BTU/hr-ft² by using the conversion factor 3.1546 x 10⁻⁸ J/(BTU-hr-ft²):
Q = μ * I * 3.1546 x 10⁻⁸
Q = (7.5 ft⁻¹ * 0.3048 m/ft) * (1014 photons/cm²-sec) * 3.1546 x 10⁻⁸ J/(BTU-hr-ft²) = 0.720 BTU/hr-ft²
Therefore, the heat generated in the thermal shield is 0.720 BTU/hr-ft².
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A pressure vessel is protected by a thermal shield. Assuming for simplicity pure gamma radiation of 5.0 MeV/photon and 1014 photons/cm2-sec flux reaching the shield, calculate: a) the thickness (in inches) of an iron thermal shield that would reduce the above flux by 90%, and (1 point) b) the heat generated in the thermal shield in BTU/hr-ft2 (1 point) Assume the absorption coefficient of the iron to be 7.5ft
step by step process please
I know the ans but not the process
pic attached
Answers
Answer:
\(\huge\boxed{\sf F= 350 \ N}\)
Explanation:
Considering pivot as the central point,
Key:
Torque = Force F × radius rAnticlockwise torque = Clockwise torque\(F_1r_1=F_2r_2\)
Here,
Anticlockwise force is FClockwise force is 600 N\(r_1=70+50= 120 \ cm = 1.2 \ m\)\(r_2=70 \ cm = 0.7 \ m\)Solution:Substitute the givens in the above formula.
\(F(1.2)=600(0.7)\\\\F(1.2)=420\\\\Divide \ 1.2 \ to \ both \ sides\\\\F=420/1.2\\\\F= 350 \ N\\\\\rule[225]{225}{2}\)
How long will it take a rocket traveling at 8km/s to reach 20 km?
Answers
Answer:
2.5 seconds
Explanation:
20:8= 2.5 seconds
have a nice day! (^o^)
Answer:
2.5 seconds
Explanation:
20 ÷ 8 = 2.5
That's it.
Physics. 40 points.
Help please :) (View attached image)
Answers
Answer:
1) 10 m/s 2) 14.1 m/s 3) 6.7 m 4) 11.25 m 5) 4.5 m/s 6) 12 joules
Explanation:
a certain lightning bolt moves 24.7 c of charge. how many fundamental units of charge is this? your answer will be in the form of: n x 1019 and you need to indicate the number n, do not include the unit. hint: e
Answers
The certain lightning bolt carries approximately 2 x 10^20 fundamental units of charge.
The number of fundamental units of charge in a certain lightning bolt is determined by dividing the charge by the fundamental unit of charge (e = 1.6 x 10^(-19) C) and round the result to the nearest whole number.
Given that the charge moved is 24.7 C, we calculate the number of fundamental units of charge as follows:
Number of fundamental units of charge = (24.7 C) / (1.6 x 10^(-19) C)Calculating this value, we get:
Number of fundamental units of charge ≈ 1.54 x 10^(20)Rounding this value to the nearest whole number, we get:
Number of fundamental units of charge ≈ 2 x 10^(20)Therefore, the number of fundamental units of charge in the given lightning bolt is 2 x 10^(20).
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Complete question :
a certain lightning bolt moves 24.7 c of charge. how many fundamental units of charge is this?
your answer will be in the form of: n x 1019 and you need to indicate the number n, do not include the unit.
hint: e = 1.6 x 10-19 C