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ivanzaharov [21]
3 years ago
11

On a sunny day, a student poured a cup of water on the sidewalk to make a puddle. When he returned later, the puddle was gone. T

he student concluded that the puddle was gone because the water soaked into the sidewalk. 1. What would you say to this student about this conclusion? 2. What could you do to demonstrate your idea about where the water went? Text EntryMedia Copy and paste or type your submission right here.
Physics
1 answer:
ivanzaharov [21]3 years ago
8 0

Answer:

The students conclusion is wrong.

Explanation:

The students conclusion is wrong because liquids can not soak into concrete. The water evaporated because it was a hot sunny day. The water turned into a gas called water vapor.

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Lenz law states the law
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Which of the following is not a requirement of practical fuel
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In this problem, you will analyze a system composed of two blocks, 1 and 2, of respective masses m1 and m2. To simplify the anal
Dafna1 [17]

Answer:

a) p = m1 v1 + m2 v2 , b) dp / dt = m1 a1 + m2 a2 , c) It is equivalent to force

dp / dt = 0

Explanation:

In this problem we have two blocks and the system is formed by the two bodies.

Part A. Initially they ask us to find the moment of the whole system

    p = m1 v1 + m2 v2

Part B.

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     dp / dt = m1 a1 + m2 a2

Part C.

Let's analyze the dimensions

     m a = [kg] [m / s2] = [N]

It is equivalent to force

Part d

Acceleration is due to a net force applied

Part e

The acceleration of block 1 is due to the force exerted by block 2 during the moment change

Part f

Force of block 1 on block 2

True f12 = m1a1        f21 = m2a2

Part g

By the law of action and reaction are equal magnitude F12 = f21

Part H

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7 0
3 years ago
What is the density of a box measuring 100 grams and 10 ml?
Alisiya [41]

Answer:

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Explanation:

ok

6 0
3 years ago
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Answer:

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dist = 40m

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8 0
3 years ago
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