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Dimas [21]
4 years ago
7

While it’s impossible to design a perpetual motion machine, that is, a machine that keeps moving forever, come up with ways to k

eep some type of periodic motion going for a very long time. Explain the limits on perpetual motion. Discuss what slows down a machine and how you might minimize those effects for at least one specific form of periodic motion, such as the motion of a spring or pendulum, or circular motion. Come up with an inventive solution!
Physics
1 answer:
galben [10]4 years ago
4 0
Nope, imposible. It violates the 2nd law of thermodynamics. Usually the main culprits of the machines to not work are friction and gravity.  the rest I'll leave to you.
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How did the ideas of einstein and freud contribute to a sense of uncertainty?
Ipatiy [6.2K]
Einstein's Theory of Relativity was a theory which carried about hesitation in Newton's gravity which was measured as an important part of science. Which brings one to query what we detect as being factual. 
Freud's thoughts about the subliminal questions one's own mind to what we have faith in. Is a dream just a dream, or is it your subliminal trying to tell you a little? It brought about a feeling of being ignorant of what is going on in your own mind. 
These and maybe other bring persons to doubt about the world about them and within themselves.
6 0
3 years ago
NEED HELP WITH THIS PLEASE
Jobisdone [24]

Answer:

A

Explanation:

5 0
3 years ago
3b. Grace drives her car with a constant speed
miskamm [114]

Time = (distance covered) / (speed)

Time = (224 mi) / (56 mi/hr)

<em>Time = 4 hours</em>

3 0
3 years ago
3- The period of the simple pendulum depends on:
Alika [10]

Answer:

c. Both mass of the bob and the length of the spring.

Explanation:

#CarryOnLearning

3 0
3 years ago
I). Mechanical energy is the sum of potential energy and kinetic energy in an object that is used to do work.
Dmitry_Shevchenko [17]

Answer:

false statement : b )  For the motion of a cart on an incline plane having a coefficient of kinetic friction of 0.5, the magnitude of the change in kinetic energy equals the magnitude of the change in gravitational potential energy

Explanation:

mechanical energy = potential energy + kinetic energy = constant

differentiating both side

Δ potential energy + Δ kinetic energy = 0

Δ potential energy = -  Δ kinetic energy

first statement is true.

Friction is a non conservative force so inter-conversion of potential and kinetic energy is not possible in that case. In case of second  option,  the correct relation is as follows

change in gravitational potential energy = change in kinetic energy + work done against friction .

So given 2 nd  option is incorrect.

In case of no change in gravitational energy , work done is equal to

change in kinetic energy.

4 0
3 years ago
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