Place the palm of your hands together and slowly rub them. You will not notice much of a temperature change. As you move your hands back-and-forth against each other at a more rapid pace you will notice the more friction you place on your hands the more the temperature increases. It’s also like Starting a fire with sticks using friction.
Answer:
A-456.3k
Explanation:
Just did the test last week
Synthesis is the correct answer
Answer:
Option (C)
Explanation:
In the field of astronomy, the redshift is defined as the shifting of the wavelength of light towards the red color of the spectrum. It describes about how the universe is expanding in every direction. The scientists have observed that the light in the universe emitted from distant objects such as the stars and galaxies is redshifted. This provides an example of Doppler's effect that is generally defined as the change in the wavelength of a wave that occurs when an observer moves relative to the source of the wave.
Hence, the correct answer is option (C).