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Kay [80]
2 years ago
15

(a) Two identical open boxes originally contain the same volume of water. One is kept at 15°C and the other at 85°C for the same

length of time.
Fig. 4.1 shows the final water levels.


With reference to the energies of the water molecules, explain why the levels are different.​

Physics
1 answer:
Tresset [83]2 years ago
6 0

Explanation:

because as you can see beaker 2 has higher temperature. As volume is directly propotional

to temperature. So the the water molecules has

more energy so that's why levels are different.

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Temka [501]

Both the man and the woman will be experiencing the same impulse, due to Newton's third law of motion.

Explanation:

This problem considers law of conservation of momentum as well as Newton's third law of motion. As per the third law of motion, every action has an equal and opposite reaction. And the law of conservation of momentum states that the momentum is conserved after collision.

Since, here the woman is kneeling on the man, it is similar to inelastic collision where the man and woman are moving with same velocity. And as the man accelerates the woman, the woman will exhibit a forward force. While at the same time, the man will be experiencing a backward force of same magnitude as of the woman. This is in consistence with the third law of motion.

So both the man and woman will experience force of same magnitude but opposite in direction. As impulse is directly proportional to the force acting on any object in a given duration, so both the man and the woman will be experiencing the same impulse.

3 0
4 years ago
Consider the electric field lines drawn below for a configuration of two charges. Several locations are labeled on the diagram.
geniusboy [140]

Answer:

The magnitude or strength of an electric field in the space surrounding a source charge is related directly to the quantity of charge on the source charge and inversely to the distance from the source charge. The direction of the electric field is always directed in the direction that a positive test charge would be pushed or pulled if placed in the space surrounding the source charge.

Explanation:

I really hope this helps you!

6 0
2 years ago
What can you conclude about the velocity of the object on the graph below
Mars2501 [29]

Answer:

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7 0
3 years ago
There is a person who throws a coin vertically downward with an initial speed of 11.8 m/s from the roof of a building, 34.0 m ab
omeli [17]

Answer:

Time taken by the coin to reach the ground is 1.69 s

Given:

Initial speed, v = 11.8 m/s

Height of the building, h = 34.0 m

Solution:

Now, from the third eqn of motion:

v'^{2} = v^{2} + 2gh

v'^{2} = 11.8^{2} + 2\times 9.8\times 34.0 = 805.64

v' = \sqrt{805.64} = 28.38 m/s

Now, time taken by the coin to reach the ground is given by eqn (1):

v' = v + gt

t = \frac{v' - v}{g} = \frac{28.38 - 11.8}{9.8} = 1.69 s

6 0
3 years ago
What type of equilibrium maintains body position during sudden motion?
Juli2301 [7.4K]

the correct answer is dynamic

6 0
2 years ago
Read 2 more answers
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