A soccer ball is traveling at a velocity of 50 m/s. The kinetic energy of the ball is 500 J. What is the mass of the soccer ball?

Answers

Answer 1

Answer: A soccer ball is traveling at a velocity of 50 m/s. The kinetic energy of the ball is 500 J.The mass of the soccer ball is 0.4 kgs. This answer is derived from the formula K=1/2 MV^2.So velocity and kinetic energy are given from that mass of the ball is calculated.By substituting the values 500=1/2*M*50*50 which gives M=0.4 Kgs.

Answer 2

Answer:

Answer:

C.0.4 kg

This is your answer!

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A change in which property of light will have no effect on whether or not the photoelectric effect occurs??? Frequently energy intensity and wavelength

Answers

The intensity of the light has no connection with the photoelectric effect.

That's what was so baffling about it before the particle nature of light
was suspected ... a match with a blue flame might stimulate the
photoelectric effect, but a high-power red searchlight couldn't do it.

Answer: intensity

Explanation:

A 4 watt night light is left on for 8 hours each night how much work does it do per night

Answers

1 watt = 1 joule per second

   (4 joules/second) x (3600 second/hour) x (8 hour)

   = (4 x 3600 x 8) (joule)

   = 115,200 joules .

A DUI conviction not only affects the driver involved but also his or her ___________A. friends.
b. family.
c. Both A and B

Answers

Answer: option C

Explanation:

A DUI (driving while under the influence of alcohol or drugs) conviction means that a person has been found guilty, of either DUI or has been found guilty of driving with a 0.8% or more blood alcohol concentration. If a person is found guilty, the DUI conviction will remain on record of driving for 75 years. A DUI conviction not only affects the driver and his/her personal relationships. Conviction can also lead to imprisonment, which will also have a negative effect on family and friends.

Your answer would be both A and B, so c.

A squirrel sitting on the ground starts to run with an acceleration of 5.1 m/s 2. How fast is the squirrel going after 0.25 seconds?A. 20.4 m/s
B. 1.28 m/s
C. 0.49 m/s
D. 3.1 m/s

Answers

initial speed = 0
final speed = v
acceleration = 5.1
time taken = 0.25
v=u+at
v=1.28 m /s

What is the velocity of the dart just before the collision?

Answers

Answer: 1.38 m/s to the right.

Explanation: We can solve this problem using the principle of conservation of momentum. The momentum of an object is defined as the product of its mass and velocity, and the total momentum of a closed system is conserved, meaning that the total momentum before a collision is equal to the total momentum after the collision.Let the initial velocity of the dart be v, and let the final velocity of the dart and the block be vf. The momentum of the dart before the collision is given by p = mv, where m is the mass of the dart. The momentum of the dart and block after the collision is given by (m + M)vf, where M is the mass of the block.Using the principle of conservation of momentum, we have:p = (m + M)vfSubstituting the given values, we get:0.012 kg v = (0.012 kg + 0.2 kg) 0.78 m/sSimplifying, we get:v = (0.212 kg) (0.78 m/s) / 0.012 kgv ≈ 1.38 m/sTherefore, the velocity of the dart just before it hits the block is approximately 1.38 m/s to the right.

A gas has an initial volume of 2.5 L at a temperature of 275 K and a pressure of 2.1 atm. The pressure of the gas increases to 2.7 atm, and the temperature of the gas increases to 298 K.The final volume of the gas, rounded to the nearest tenth, is.

Answers

The following information are given:
V1 = 2.5L
T1 = 275K
P1 = 2.1 atm
T2 = 298K
P2 = 2.7 atm
V2 = ?
The formular for solving the equation is: P1V1T1 = P2V2T2
V2 = P1V1T1/P2VT2
V2 = 2.5 * 275 * 2.7 * 298 = 1443.75/804.6 = 1.794
Therefore, V2 = 1.8L.

Its 2.1, I just took the test, the verified answer is wrong.

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