An elevator descends into a mine shaft at rate of 15 metre per minute. a) What will be its position after 1 hour?
b) If it begins to descend 25m above ground, what will be its position after 45 minutes?

The specific heat of silver is 0.057 calories/gram°c. if 10.0 grams of silver were heated and the temperature of the sample changed by 20.0°c, how many calories of heat energy were absorbed by the sample?

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

In a set amount of time, a battery supplies 25j of energy to an electric circuit that includes two different loads. one of the loads produces 10 j of heat energy during this time interval. how much heat energy is produced by the second load in this time? explain your answer