# An example of kinetic energy is ______. a stretched rubber band boulder perched on the edge of a cliff compressed spring car coming to a stop

2 months ago

## Solution 1

Guest #10445
2 months ago
Kinetic energy is the energy of motion, and things that are
in motion have it.  The only choice on the list that mentions
anything moving is the "car coming to a stop".

## Solution 2

Guest #10446
2 months ago

An example of kinetic energy is ______.

a stretched rubber band

boulder perched on the edge of a cliff

compressed spring

car coming to a stop

Explanation:

## 📚 Related Questions

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Carla uses a table tennis ball and a volleyball to represent two astronomical bodies based on their sizes. Which of the following representations is the most correct based on what Carla has? A: The table tennis ball represents the Milky Way and the volleyball represents the local group cluster. B: The table tennis ball represents the solar system and the volleyball represents Earth. C: The table tennis ball represents the solar system and the volleyball represents the moon. D: The table tennis ball represents the Milky Way and the volleyball represents the solar system.
Solution 1

A: The table tennis ball represents the Milky Way and the volleyball represents the local group cluster.

Explanation:

The universe is huge. It contains millions of billions stars in total of about 10 billion galaxies. These galaxies are grouped into clusters. Milky way is our home galaxy which is part of local group cluster. There are main three galaxies in local group cluster- Milky way, Andromeda and Triangulum. Other than these large galaxies there are dwarf galaxies part of the cluster.

Thus, a table tennis ball which is smaller in size would represent milky way and volley ball would represent local group cluster.

Solution 2
A: The table tennis ball represents the Milky Way and the volleyball represents the local group cluster.
Question
A rod made up of a single element is used to heat water using electricity. To which group does this element probably belong to?
Solution 1
Nichrome is usually used as the rod to heat water using electricity.  It is an example of Nickel and  belongs to the element Nickel in the periodic table.
Solution 2

Explanation:

A rod made up of a single element that is used to heat water is made of nichrome ( Nichrome is an alloy of nickel and chromium, which has majority of  nickel in it about 80% and 20% is chromium). Since, the majority is of nickel, nickel is a transition element belonging to D- Block in the periodic table and is found in 10th group. Nickel is ferromagnetic element. It is also used widely in stainless steel.

Question
The volume of a liquid is often given in
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In the US, ounces, cups, pints, quarts, gallons, liters, and
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Similar to a refrigerator, an ___ transfers thermal energy from inside a room to the outdoors a. vacuum b. air conditioner c. dish washer d. water heater
Solution 1
Refrigerators and air conditioners operate on the same principles,
and use largely the same inside guts.  The difference is that the
refrigerator takes heat away from the the stuff inside and dumps it
into the kitchen, whereas the air conditioner takes heat out of the
kitchen and dumps it outside the house.
Question
A car is travelling at 20 km/hr.It speeds upto 60 km/hr in 6 seconds.What is its acceleration?
Solution 1
A=v/t

40/6=a=20/3
...........
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The Astronomer Carl Sagan is famous. Why?
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Mainly because he was Johnny Carson's advisor and consultant
on space, astronomy, and science in general, and he appeared
on The Tonight Show Starring Johnny Carson many times.
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Why are hair samples considered to be both useful and cumbersone of tace evidence?
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Well, hair has follicle cells that are attached to it. Which means it can then
be individualized through DNA.
Question
An electric motor is connected to a battery. The current flows through brushes to a commutator ring, which is attached to an electromagnet turning through a permanent magnetic field. What is the purpose of the commutator ring? It turns the electromagnet in the opposite direction. It keeps the electromagnet from losing its magnetism. It periodically reverses the current flow through the electromagnet. It allows mechanical energy to be converted into electrical energy.
Solution 1
It periodically reverses the current flow through the electromagnet.

Solution 2
B.................................................
Question
A 30w light bulb uses 600J of electrical energy in a certain period of time. In that time , it produces 450 J of light energy. The rest of the energy is wasted calculate the efficiency of the light bulb
Solution 1

The calculated  value of the efficiency of the light bulb be 75 %.

### What is efficiency?

Efficiency is essentially a measurement of the amount of labor or energy that can be saved throughout a process. In other words, it's similar to comparing the energy input and output in any particular system.

For instance, we observe that many processes result in the loss of effort or energy like vibration or waste heat.

As a result, the energy efficiency is the energy output divided by the energy intake, which is then expressed in percentage form.

According to the question:

The 30 W light bulb uses electrical energy as input energy: I = 600 J.

The 30 W light bulb produces light energy as output energy: O = 450J.

Hence, the efficiency of the light bulb is given by

=  output energy/ input energy×100%

= 450J/600J ×100%

= 75 %

Hence,  the efficiency of the light bulb be 75 %.

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Solution 2
30*t=600
t=20 second

450=20*w
w=45/2
Question
A baseball has a mass of 145 g A bat exerts a force of 18400 N on the ball what is the acceleration of the ball
Solution 1
F=ma
18400=0,145*a
...................

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