if a ball is thrown horizontally from the first floor of a building (5.0 m from the ground) at a speed of 5.0 m/s, where will it be when it hits the ground for the first time?
Answers
The ball will be 49.5m from the base when it hits the ground based on 9.8m/s² earth gravity.
what is earth gravity?
Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.
Why do things fall down when you throw them or drop them? The answer is because gravity ; an invisible force that pulls objects toward each other. Earth's gravity is what keeps you on the ground and what makes things fall.
First, let's try to find the time taken by ball to reach the ground :
\(-h = 0 - \frac{1}{2}gt^{2}\)
t = \(\sqrt{2gh}\)
t = \(\sqrt{2*9.8*5\)
t = 9.9 s (rounded)
Next, we will find the horizontal distance covered by ball :
D = v*t
D = 5 * 9.9
D = 49.5m
Therefore, the ball will be 49.5m from the base when it hits the ground for the first time based on 9.8m/s² earth gravity.
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Related Questions
The diameter of a washer is normally distributed with u = .012 g = .0024.
What will be the value of the diameter of a washer so that 45% of the diameters are greater?
Answers
The value of the diameter of the washer so that 45% of the diameters are greater is approximately 0.0161. The problem states that the diameter of a washer is normally distributed with a mean (μ) of 0.012 and a standard deviation (σ) of 0.0024.
We want to find the value of the diameter that corresponds to the top 45% of the distribution.
To find this value, we need to calculate the z-score corresponding to the top 45% of the distribution. The z-score represents the number of standard deviations a value is from the mean. We can use the z-table or a statistical calculator to find the z-score associated with a cumulative probability of 0.45.
In this case, the z-score is approximately 1.645. Using the formula z = (x - μ) / σ, we can rearrange it to solve for x (the diameter we are looking for).
x = μ + (z * σ)
x = 0.012 + (1.645 * 0.0024)
x ≈ 0.0161
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Elaine wears her wide‑brimmed hat at the beach, where the atmospheric pressure is exactly 1.0 atm. Determine the weight of the imaginary column of air that "rests" on her hat if its diameter is 45 cm.
Answers
The weight of the imaginary column of air that "rests" on Elaine's hat is approximately 1588.75 Newtons.
The weight of the imaginary column of air that "rests" on Elaine's hat can be determined using the formula:
Weight = Pressure × Area
First, let's find the area of the hat. The diameter of the hat is given as 45 cm. The formula for the area of a circle is:
Area = π × (radius)²
To find the radius, we divide the diameter by 2:
Radius = 45 cm / 2 = 22.5 cm
Now we can calculate the area:
Area = π × (22.5 cm)²
Area = π × (506.25 cm²)
Next, we need to convert the area to square meters, as the SI unit for pressure is Pascal (Pa), which is equal to 1 N/m²:
Area = π × (506.25 cm²) × (0.01 m / 1 cm)²
Area = π × (506.25 cm²) × (0.0001 m² / 1 cm²)
Area = π × (506.25 cm²) × (0.0001 m² / 0.0001 cm²)
Area = π × (506.25 cm²) × (1 m²)
Area = π × (506.25 cm²) m²
Now we can calculate the weight using the atmospheric pressure, which is given as 1.0 atm:
Weight = (1.0 atm) × (π × (506.25 cm²) m²)
Weight = (1.0 atm) × (π × (506.25 cm²) m²)
Weight = 1.0 atm × (π × 506.25) N
Weight ≈ 1.0 atm × 1588.75 N
Weight ≈ 1588.75 N
Therefore, the weight of the imaginary column of air that "rests" on Elaine's hat is approximately 1588.75 Newtons.
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In the middle of a thunderstorm, a lightning bolt flashes. It takes Roberto 5 seconds to
hear the thunder afterwards. How far is the source of lightning from Roberto? The temperature is 22° C.
Speed of sound at 22°C = ?
d = ?
You will be reported if you didn't answer properly
Answers
Answer:
v = 344.1 m / s
d = 1720.5 m
Explanation:
For this problem we must calculate the speed of sound in air at 22ºC
v = 331 RA (1+ T / 273)
we calculate
v = 331 RA (1 + 22/273)
v = 344.1 m / s
the speed of the wave is constant,
v = d / t
d = v t
we calculate
d = 344.1 5
d = 1720.5 m
Can frictional forces ever increase an object’s kinetic energy?
Answers
Explanation:
friction opposes the relative motion between two bodies,hence it decreases the kinetic energy but, in the view that friction supplies the force that accelerates the object , for example friction helps in walking we can say that friction causes an increase in kinetic energy
Answer:
In most situations, frictional forces tend to reduce the kinetic energy of an object. However, frictional forces can sometimes increase an object's kinetic energy.
2. If, in the previous question, there is a 15 N kinetic frictional force opposing the motion, how much work is
done by the force of friction? Does friction do positive work or negative work on the block? Draw a free-body
diagram to support your answer.
Answers
Answer:
this answer your question
Laptop computers are made with batteries, but they must also be plugged into outlets to charge the batteries. which is true regarding laptops? they run only on alternating current. they run only on direct current. they can run on either direct or alternating current. they do not run on direct or alternating current.
Answers
The true statemement regarding laptops is they can run on either direct or alternating current.
What is direct current source?This is the type of current that flows only in one direction. The source of this type of current in battery.
What is alternate current source?This is the type of current that changes direction with time. The source of this type of current is current from outlet.
Thus, the true statemement regarding laptops is they can run on either direct or alternating current.
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Answer:
C
Explanation:
edge 2022
What happens in a convection cell?
Answers
Answer:
In the field of fluid dynamics, a convection cell is the phenomenon that occurs when density differences exist within a body of liquid or gas. The colder, denser part of the fluid descends to settle below the warmer, less-dense fluid, and this causes the warmer fluid to rise.
Explanation:
Answer: When density differences exist within a body of liquid or gas,
One-fourth of adults in the United States are not active at all.
true
false
Answers
Answer:
true 28%
Explanation:
;"/:;,*"# /hcrvuvf
Answer:
True - - - probably more than one-fourth aren't to be honest
Explanation:
Which of the following statements describes one of the key decisions for personal safety while exercising?
A.
wearing dark and heavy clothes when exercising in hot climates
B.
keeping your shoes loosely tied or untied so you can easily put them on or take them off
C.
making sure clothing matches current fashion guidelines
D.
choosing clothing that is appropriate for the environment and type of exercise
Please select the best answer from the choices provided.
Answers
Answer:
D
Explanation:
Wearing the appropriate clothing in certain temperatures or environments are important to our safety while exercising because not bearing caution to that can result in injury
Answer:
The answer would be D
Explanation:
a charge of 0.65 c is spread uniformly throughout a 49 cm rod of radius 7 mm. what are the volume and linear charge densities?
Answers
The volume and linear charge densities are 4.5 × 10⁻⁴ C/m³ and 1.33 C/m. The result is obtained by using the formula for volume and linear charge density.
How to determine the volume and linear charge density?The volume and linear charge density can be expressed as
ρ = q/V
λ = q/l
Where
ρ = volume charge density (C/m³)λ = linear charge density (C/m)q = charge (C)V = volume (m³)l = length (m)We have a charge that is spread uniformly.
Q = 0.65 Cl = 49 cm = 0.49 mr = 7 mm = 7 × 10⁻³ m
Find the volume and linear charge density!
The volume of a sphere is
V = 4/3πr³
V = 4/3 (22/7) (7 × 10⁻³)³
V = 4/3 (22) (49 × 10⁻⁶)
V = 1,437.3 m³
The volume charge density is
ρ = q/V
ρ = 0.65/1,437.3
ρ = 4.5 × 10⁻⁴ C/m³
The linear charge density is
λ = q/l
λ = 0.65/0.49
λ = 1.33 C/m
Hence,
The volume charge density, ρ = 4.5 × 10⁻⁴ C/m³.The linear charge density, λ = 1.33 C/m.Learn more about linear charge density here:
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2 What is the net force on an object when you combine a force of 17 N north with a force of 9 N north?
Be sure to include the direction of the force.
Answers
Answer:
5N NORTH
Explanation:right on edge
________ is the tendency toward a disordered state.
A) Potential energy
B) Kinetic energy
C) Convection
D) Entropy
E) Heat
Answers
Among the given options, entropy (D) is the correct answer, as it represents the tendency toward a disordered state in a system.
Entropy is the tendency toward a disordered state. In thermodynamics, entropy is a measure of the randomness or disorder of a system. As a system undergoes a spontaneous process or transformation, its entropy tends to increase, leading to a more disordered state.
Entropy is an important concept in understanding the behavior of systems in various fields such as chemistry, physics, and engineering. It is associated with the second law of thermodynamics, which states that in an isolated system, natural processes tend to increase the overall entropy. In other words, systems tend to move towards a state of greater disorder or randomness over time. Entropy is often related to energy distribution within a system, with high entropy indicating a more even distribution of energy and low entropy suggesting a more concentrated distribution
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The length of a certain wire is kept same while its radius is doubled. What is the new resistance of this wire
Answers
Answer:
R = K L / A resistance proportional to length and inversely proportional
to area
R2 / R1 = A1 / A2 = A1 / (4 A1) = 1 / 4
R2 = R1! / 4
What is the mass of a cart that has an acceleration of 5 m/s2 when a net force of 200 N is applied to it?*
Answers
Answer:
40 kg
Explanation:
F = ma
200N = m x 5 m/s²
m = 200/5 = 40 kg
BRAINLIEST.
GIVE ME DAT GOOD STUFF.
What do these two changes have in common? your breath becoming visible on a cold day building a tower out of magnetic blocks
Answers
How to integrate 1/ 1 + x2
Answers
The integral of 1/(1 + x²) is (1/2)ln|1 + x²| + C where C is the constant of integration.
Integration is a mathematical process of finding the antiderivative of a function. To integrate the given expression 1/(1 + x²), we will use the substitution method.
Let u = 1 + x², du/dx = 2x dx, then dx = du/2x and the integral becomes:
∫1/(1 + x²) dx = ∫1/u * (1/2x) du= (1/2)∫1/u du
The antiderivative of 1/u is ln|u| + C, where C is the constant of integration.
Therefore, the final solution of the integral is (1/2)ln|1 + x²| + C.
Let us work through the steps:
Step 1:Let u = 1 + x² and then differentiate both sides with respect to x to obtain du/dx. du/dx = 2x
Substitute 2x dx = du into the integral ∫1/(1 + x²) dx to get the integral in terms of u:∫1/u * (1/2x) du = (1/2) ∫1/u du
Step 2:Calculate the antiderivative of 1/u, which is ln|u|. Thus, the final solution is (1/2)ln|1 + x²| + C, where C is the constant of integration. The constant C will vary depending on the initial conditions of the problem.
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A 0.5kg baseball experiences a 10n force for a duration of 0.1s. what is the change in?
Answers
The change in velocity is 2m/s
Given ,
mass of baseball m = 0.5kg
force on baseball F = 10 N
Duration .i.e. time t = 0.1s
To find here change in velocity =?
Solution,
The impulse(J) of an object is equal to,
J = F× T
Where J is the impulse of the baseball and F is force on baseball at time t.
The impulse is equal to the change in momentum of the baseball and its unit is (N.s) Newton -second. it is a vector quantity therefore the dimension is [LMT⁻¹]. Then the impulse j is given as ,
J = m(v-u)
Here J is impulse ,m is mass, (v-u) is change in velocity .From equating the both impulse equations then can be write as,
m(v-u) = F× t
(v -u) =( F × t)/m
(v -u) = (10N× 0.1 s)/0.5k
(v -u) = 2m/s
Hence the change in velocity (v -u) of baseball is 2m/s.
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The scale of the horizontal axis is 5s per division on the vertical axis 5 m/s per división. The initial position is 57 m.
A) what is the position when t=35s?
Answer in units of m.
B) what is the acceleration is represented by the graph? Answer in units of m/s^2
Answers
The position when time, t =35s is 87.59 m.
The acceleration represented by the graph is 0.143 m/s².
Acceleration of the objecta = Δv/Δt
where;
Δv is change in velocityΔt is change in time of motiona = (6 - 5) / (7 - 0)
a = 0.143 m/s²
Position of the object at the given time, 5 secondsThe position of the object is determined from the product of velocity and time of motion.
s = vt + ¹/₂at²
where;
v is initial velocity = 0t is time = 35 secondsa is acceleration = 0.143 m/s²s = 0 + ¹/₂(0.143)(35)²
s = 87.59 m
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Which force would result in a balanced force for the
game?
O 45N
O -20 N
O 20 N
O 45 N
Answers
Answer:
F= 45 N
Explanation:
a block of mass m is released from rest and slides down an incline, as shown in the figure. the length d of the incline is 0.8 m and the angle of the incline, θ, is 37°. a graph of the speed v as a function of time t of the block as it descends the incline is shown. how could a student use the graph and the information provided to determine whether the block-earth system is an open system or a closed system?
Answers
The system is open, because there is a net force exerted on the block.
What are some instances of kinetic energy?An individual strolling, a taking off baseball, a piece tumbling from a table and a charged molecule in an electric field are instances of dynamic energy at work. An item that isn't moving has zero motor energy.
The energy an item has as a result of motion is known as kinetic energy. A force must be applied to an item in order to accelerate it. We must put forth effort in order to apply a force. After the job is finished, energy is transferred to the item, which then moves at a new, constant speed.
According to question:
On graphing free body diagram of the problem
There is a force = mgsin(37°)
So, the it is a open system.
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what is physical properties of matter
Answers
Answer:
A quality of matter that is unrelated to a change in its chemical makeup is called a physical property.
Examples of physical properties of matter:
DensityColorHardnessMelting PointBoiling PointElectrical ConductivityPhysical properties are any qualities of matter that may be felt or seen without changing the sample's chemical composition.
Due to the wide range of features that make up physical attributes, they are further separated into intensive and extensive as well as isotropic and anisotropic categories.
Any characteristic that can be recognized and measured by sight, hearing, touch, smell, or other senses without evoking a chemical reaction is referred to as a physical property. Examples of physical traits are:
Color, Shape, Volume, Density, Calorific value, Boiling point, Viscosity, Pressure, Solubility, electrical current
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PLS HELP, 20 POINTS
Which statement accurately describes the motion of the object in the graph above?
A. It moved from 3 cm to 10 cm at a constant speed of 2 cm/s.
B. It moved from 0 cm to 6 cm at an average speed of 1 cm/s.
C. It moved from 0 cm to 10 cm at an average speed of 2 cm/s.
D. It moved from 3 cm to 6 cm at a constant speed of 3 cm/s.
Answers
Answer:
A. It moved from 3 cm to 10 cm at a constant speed of 2 cm/s.
Explanation:
Just took the quiz.
It moved from 3 cm to 6 cm at a constant speed of 3 cm/s. This statement accurately describes the motion of the object in the graph above
What is motion of object ?
An object is said to be in motion , if its position changes with respect to its surroundings and time.
A. Object's motion is from 3 cm to 10 cm at a constant speed of 2 cm/s
let us check
time = 7 sec
distance = 10 - 3 = 7 sec
speed = distance / time = 7/7 = 1 m/s
wrong option
B. Object's motion is from 0 cm to 6 cm at an average speed of 1 cm/s.
distance = 6 cm
time = 7.5 sec
speed = 6/7.5 = 0.8 m/s
wrong option
C. Object's motion is from 0 cm to 10 cm at an average speed of 2 cm/s.
distance = 10 cm
time = 9 sec
speed = 10 / 9 = 1.11 m/s
wrong option
D. Object's motion is from 3 cm to 6 cm at a constant speed of 3 cm/s.
distance = 6-3 = 3 cm
time = 7.5 - 6.5 = 1 sec
speed = 3 /1 = 3 m/s
correct option D. It moved from 3 cm to 6 cm at a constant speed of 3 cm/s.
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What is the effective resistance between "a" and "b" as shown in the figure.
Answers
The effective resistance between a and b is determined as R/6.
What is the effective resistance between a and b?The effective resistance between a and b is calculated from the total resistance of the parallel circuit.
1/Re = 1/R₁ + 1/R₂ + 1/R₃
where;
R₁ is the resistance 1R₂ is the resistance 2R₃ is the resistance 3The effective resistance between a and b is calculated as follows;
1/Re = 1/R + 1/R + 1/R
1/Re = (1 + 1 + 1) /R
1/Re = 3/R
Re = R/3
The effective resistance between a and b is = R/3 x ¹/₂ = R/6
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why are fuels from crude oil so widely used for transportation
Answers
Acid-base reactions can also be classified as which type of reaction?
1. decomposition
2. double replacement
3. single replacement
4. synthesis
Answers
Acid-base reactions can also be classified as double replacement reaction.
An acid base reaction is said to have occurred when the replaceable hydrogen ions in an acid have all been replaced by metallic or ammonium ions. This is the basic definition of acid base reaction.
Consider the reaction;
NaOH(aq) + HCl(aq) ------> NaCl(aq) + H2O(l)
We can see that we can also classify this reaction as a double replacement reaction since each of the anions in the reactant side exchanged cation partners in the product.
The reaction fits the general description; AB + CD ----> AD + CB
Thus, acid-base reactions can also be classified as double replacement reaction.
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Answer:
7. Double Replacement
DOES ANYONE HAVE THE ANSWERS TO THIS TEST??!! IM PANICKING! IT THE CHEMICAL REACTIONS UNIT TEST FOR PHYSICAL SCIENCE NOT CHEMISTRY!! It has 18 questions. Someone help me. ✌
A soccer ball with mass of 2 kg is moving across an open field. What factor might change its momentum
A change in the ball’s velocity
A change in the size of the soccer field
A change in air temperature
A change in the number of players on the field
Answers
Answer:A change in the ball's velocity can change its momentum. Momentum is defined as the product of an object's mass and its velocity, so any change in the velocity of the soccer ball will result in a change in its momentum. This change can be caused by various factors, such as a kick or a collision with another object.
The size of the soccer field, air temperature, and the number of players on the field are unlikely to directly affect the momentum of the soccer ball. However, these factors can indirectly affect the game and potentially lead to changes in the ball's velocity or direction of motion, which can in turn affect its momentum. For example, a change in air temperature can affect the air resistance acting on the ball, which can alter its trajectory and speed. Similarly, the number of players on the field can affect the available space and opportunities for the ball to be kicked or redirected.
Explanation:
A motorcyclist started a race from the start line and from rest, and accelerated with the acceleration of 3m/s2 for 8 secs. Then he was moving with a constant velocity for 2 secs. What was the racer’s position from the start line after 9+2 seconds from the start of the race?
Answers
Answer:
I dont even know my g
Explanation:
Like i cant even help u
4. A 1500 kg car is rolling at 2.0 m/s. You would like to stop the car by firing a 10 kg blob of
sticky clay at it. How fast should you fire the clay?
Answers
The clay must be 300 m/s fast in other to stop the car.
For the car to stop, The momentum of the car must be equal to the momentum of the clay.
Formula:
MV = mv................. Equation 1Where:
M = mass of the carV = Velocity of the carm = mass of the clayv = velocity of the clayMake v the subject of the equation.
v = MV/m................... Equation 2From the question,
Given:
M = 1500 kgV = 2 m/sm = 10 kgSubstitute these values into equation 2
v = 1500(2)/10v = 300 m/s.Hence, The clay must be 300 m/s fast in other to stop the car.
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A 6,000 kg truck moving at +8 m/s has the same momentum as a 2,500 kg car. What is the velocity of the car?
Answers
Answer:
16m/s
Explanation:
Mv=mv5000x8=2500x vV=5000x8/2500V=40000/2500= 16m/s
while the woman is repairing a leaky pipe under her kitchen sink, she looks at close objects through the upper half of her bifocal lenses. what is the closest object that she can see clearly?
Answers
Thus the closest object that the woman should be able to see while looking through the upper part of the bifocal lens would be the object that lies between 25cm of the lens.
Bifocal spectacles are specs which are created of both convex and concave lens. The upper part is made up of the concave lens while the lower part consists of convex lens.
When looking through the upper part of the bifocal lens the objects at a little distance become clearer as the upper part of bifocal lens consists of diverging lens that is used to correct distant or vision at some distance.
There are two types of lens the converging or convex lens and the diverging lens or concave lens.
Convex lens is called the converging lens as a two parallel rays of light when passing through a convex lens get bent towards each other and converge at some point.
Concave lens is called the converging lens as two parallel rays on passing through the concave lens get diverged from each other.
The clearest image that is formed by a concave lens is when the object lies between the focal point and the lens, where the image is formed at the focal point on the image side of the lens.
Thus the closest object that she would be able to see is the object that she would be able to see clearly would be the object that lies between 25cm of the lens.
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