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3 years ago

What happens to the volume of a solid when it is moved to a larger container?

Physics

1 answer:

Goryan [66]3 years ago

6 0

Remains unchanged (as it's a solid)

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A footballer kicks a ball from rest. The foot is in contact with the ball for 0.30s and the final velocity of the ball is 15ms-1

Ne4ueva [31]

Answer:

Explanation:

Step one:

given data

initial velocity u= 0m/s since the ball is at rest

time of contact t= 0.3s

final velocity v=15m/s

Required

acceleration a

from the first law of motion

v=u+at

substitute our given data

15=0+a*0.3

15=0.3a

divide both sides by 0.3

a=15/0.3

a=50m/s

<u>The average acceleration is 50m/s^2</u>

7 0

2 years ago

How can resonance overcome damping of an oscillating system?

Aneli [31]

Answer:

When one system vibrating at its natural frequency is put closer to a stationary system, the stationary system receives impulses.

At resonant frequency, the system vibrating at its own natural frequency suddenly goes on decreasing in order to cope with neighboring system.

These decrease in frequency is known as damping.

6 0

2 years ago

Imagine you have been asked to create an experimental design to test the hypothesis that talking on a cell phone impairs driving

joja [24]

To start the control would be import to see how drivers would act with full focus on the road. The subjects should (in order for the only difference to be the phone) is to use the same vehicle same road same weather condition, just obviously one has the phone the other does not. I hope this helps

7 0

3 years ago

Read 2 more answers

Why are these waves called out phase waves?

ss7ja [257]

Answer:

^ What he said

Explanation:

Peace out

4 0

2 years ago

What is the change in internal energy if 60 J of heat is released from a system and 30 J of work is done on the system? Use U =

k0ka [10]

The change in internal energy of the system is +30 J

Explanation:

We can solve this problem by using the first law of thermodynamics, which states that the change in internal energy of a system is given by the equation:

$\Delta U = Q -W$