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Alona [7]
4 years ago
8

True or False - Solar energy comes from wind energy?

Physics
1 answer:
vladimir1956 [14]4 years ago
3 0
False. solar comes from the sun while wind energy comes from the wind. hope this helps!
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I NEED HELP!!!! THIS IS A CER "Write a scientific explanation describing how a rabbit, which eats plants, gets energy to live an
LekaFEV [45]

Answer:

A rabbit which needs food specifically food from plants because they are vegetarians, to help them grow. The energy that the plant holds is given to the rabbit when eaten. The plant feeds the bunny its nutrients which tells the muscles to keep going and get stronger and tells the rest of the body to grow.

Explanation:

4 0
3 years ago
Which of the following situations has more kinetic energy than potential energy?
san4es73 [151]

Answer: I think its C

Explanation:

5 0
3 years ago
A mass m = 4.6 kg hangs on the end of a massless rope L = 2.16 m long. The pendulum is held horizontal and released from rest.
serious [3.7K]

ind the velocity my using the conservation of energy mgh=1/2mv^2. At the bottom, the mass is turning in a circle with tension pointing up towards the center of the circle and weight pointing down. Use the centripetal force requirement mv^2/r=T-W and solve for T. Hope this helps.

4 0
3 years ago
A mass is attached to an ideal spring. At time t = 0 the spring is at its natural length and the mass is given an initial veloci
JulijaS [17]

Answer:

t = T/4

Explanation:

The power delivered to the mass by the spring is work done by the spring per second.

P = \frac{dW}{dt}

The work done by the spring is equal to the elastic potential energy stored in the spring.

U = \frac{1}{2}kx^2

The maximum energy stored in the spring is at the amplitude of the oscillation.

U_{max} =\frac{1}{2}kA^2

So the first time the mass reaches to its amplitude can be found by the following equation of motion:

x = A\cos(\omega t + \phi)\\\phi = \pi/2 ~because ~at ~t= 0, ~ x = 0\\0 = A\cos(0 + \pi/2)\\x = A\cos(\omega t + \pi/2)

When the mass reaches the amplitude:

A = A\cos(\omega t + \pi/2)\\1 = \cos(\omega t + \pi/2)\\\omega t + \pi/2 = \pi

because cos(π) = 1.

\omega t = \pi/2

Using ω = 2π/T,

\omega t = \pi/2\\\frac{2\pi}{T}t = \pi/2\\t = \frac{T}{4}

4 0
4 years ago
If a person lives in china in which two hemispheres does he or she live
Delvig [45]

on the globe , the largest continent on earth , asia lies in between eastern and northern hemisphere. it is also known that country china comes in asian continent. hence we can say that china also lies in between eastern and northern hemisphere.

hence the two hemispheres are northern and eastern.

5 0
4 years ago
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