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storchak [24]
3 years ago
15

List 3 cases in which potential energy becomes kinetic energy and three cases in which kinetic energy becomes potential energy.

Physics
1 answer:
Mrrafil [7]3 years ago
3 0

Answer:

when you open a can of pop

when you jump on your bed

Explanation:

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The energy transferred to the water in 100 seconds was 155 000 J. specific heat capacity of water = 4200 J/kg °C
skelet666 [1.2K]

Answer:

0.37 kg

Explanation:

I'm not a professor myself, but this is how I worked it out:

using the graph, after 100 seconds, the temperature is 100 degrees Celsius.

If we now substitute everything into the specific heat capacity equation, making the mass "m", we would come up with:

4200 = 155000/(m x 100)

If we rearrange and solve for m, we get 0.37 kg.

I'm not sure if I have done this correctly, feel free to correct me.

Hope this helps!

4 0
3 years ago
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What is the speed of a bobsled whose distance-time graph indicates that it traveled 119m in 29s?
Assoli18 [71]
Do 112m /29s which it will be 3.862 which if you round it, it will be 3.86 m/s
7 0
3 years ago
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In a skating stunt known as "crack-the-whip," a number of skaters hold hands and form a straight line. They try to skate so that
4vir4ik [10]

Answer:

The magnitude of the centripetal force that acts on him

Explanation:

Given that,

Mass = 80.0 kg

Distance = 6.10 m

Speed = 6.80 m/s

We need to calculate the magnitude of the centripetal force that acts on him

Using formula of the centripetal force

F_{c}=\dfrac{mv^2}{r}

Where, F = force

m = mass

v = speed

r = distance

Put the value into the formula

F_{c}=\dfrac{80.0\times(6.80)^2}{6.10}

F_{c}=606.4\ N

Hence, The magnitude of the centripetal force that acts on him

7 0
3 years ago
What are protons and neutrons compromised of?
tatiyna

Answer:

Along with protons, neutrons make up the nucleus, held together by the strong force. The neutron is a baryon and is considered to be composed of two down quarks and one up quark. A free neutron will decay with a half-life of about 10.3 minutes but it is stable if combined into a nucleus.

7 0
4 years ago
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A body of mass 5 kg is moved by a horizontal force of 0.5 N on a smooth frictionless table for 20 seconds. Calculate the change
svetoff [14.1K]

Answer: 10 J

Explanation:

Trust ;)

6 0
3 years ago
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