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Stels [109]
2 years ago
12

Take some pieces of papers of leaf size and make them waterproof. Put half in the hot water and put half in the cold water do al

l the pieces remains waterproof
Physics
1 answer:
Pavlova-9 [17]2 years ago
4 0

Answer:

No.

Explanation:

No, all the pieces of paper did not remains waterproof because expansion of paper occur due to high temperature of hot water. We know that materials expand when they experience high temperature and contract when they observe cold temperature. So the pieces of paper remains waterproof which were put in cold water while those were not waterproof which were put in hot water.

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A boy im50kg at rest on a skateboard is pushed by another boy who exerts a force of 200 N on him. If the first boy's
sergey [27]

Answer:

Time, t = 2 seconds

Explanation:

Given the following data;

Mass, m = 50 kg

Initial velocity, u = 0 m/s (since it's starting from rest).

Final velocity, v = 8 m/s

Force, F = 200 N

To find the time, we would use the following formula;

F = \frac {m(v - u)}{t}

Making time, t the subject of formula, we have;

t = \frac {m(v - u)}{F}

Substituting into the formula, we have;

t = \frac {50(8 - 0)}{200}

t = \frac {50*(8)}{200}

t = \frac {400}{200}

Time, t = 2 seconds

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3 years ago
Four equal masses m are so small they can be treated as points, and they are equally spaced along a long, stiff wire of neglible
anyanavicka [17]

Answer: 5m/L^2

Explanation:

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= 5m/l^2.

8 0
3 years ago
Which research method uses questionnaires to collect information about the participants in a study?
musickatia [10]
Survey research method uses questionnaires to collect information about the participants in a study.It is commonly used method of collecting information about a population of interest.
7 0
3 years ago
Read 2 more answers
which of the following is an example of a compound machine. a. a bicycle chain. b. a coffee mug. c. a paper cutter
Ann [662]
A. a bicycle chain is an example of a compound machine
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2 years ago
Define bond length using your own words​
Brut [27]

Answer:

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Explanation:

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2 years ago
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