The picture shows a roller coaster track with two hills of equal height. A motor uses electric energy to pull the roller coaster cars by a chain to the top of the first hill. While the cars are moving up the hill, what energy transformations occur? When the cars get to the top of the first hill, has any energy entered the roller coaster system? If so, what kind?

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

the answer is c i took the test

the formula for the conversion of temperature from degree celsius to kelvin is:

the sample of water at is converted to kelvin temperature by using the above formula as:

on comparing the two samples of water at or we can say that at and at respectively. the difference between the temperatures of two samples of water is:

hence, one can say that the sample of water at is greater than the sample of water at by .