Questions from College Physics

Q: Two 62 g ice cubes are dropped into 186 g of water

Two 62 g ice cubes are dropped into 186 g of water in a glass. If the water is initially at a temperature of 24°C and the ice is at −15°C, what is the final temperature of the drink?

Q: Repeat Problem 41 without ignoring the temperature change of the glass.

Repeat Problem 41 without ignoring the temperature change of the glass. The glass has a mass of 350 g and the specific heat of the glass is 0.837 kJ/(kg·K). By what percentage does the answer change f...

Q: A 0.500 kg slab of granite is heated so that

A 0.500 kg slab of granite is heated so that its temperature increases by 7.40°C. The amount of heat supplied to the granite is 2.93 kJ. Based on this information, what is the specific heat of granite...

Q: The graph shows the change in temperature as heat is supplied to

The graph shows the change in temperature as heat is supplied to a certain mass of ice initially at −80.0°C. What is the mass of the ice?

Q: A spring of force constant k = 8.4 × 103

A spring of force constant k = 8.4 × 103 N/m is compressed by 0.10 m. It is placed into a vessel containing 1.0 kg of water and then released. Assuming all the energy from the spring goes into heating...

Q: If a leaf is to maintain a temperature of 40°C

If a leaf is to maintain a temperature of 40°C (reasonable for a leaf), it must lose 250 W/m2 by transpiration (evaporative heat loss). Note that the leaf also loses heat by radiation, but we will ign...

Q: One end of a cylindrical iron rod of length 1.00

One end of a cylindrical iron rod of length 1.00 m and of radius 1.30 cm is placed in the blacksmith's fire and reaches a temperature of 327°C. If the other end of the rod is being held in your hand (...

Q: An x-ray photon with wavelength 6.00 pm collides

An x-ray photon with wavelength 6.00 pm collides with a free electron initially at rest. What is the maximum possible kinetic energy acquired by the electron?

Q: A container has a large cylindrical lower part with a long thin

A container has a large cylindrical lower part with a long thin cylindrical neck open at the top. The lower part of the container holds 12.5 m3 of water and the surface area of the bottom of the conta...

Q: A birch tree loses 618 mg of water per minute through transpiration

A birch tree loses 618 mg of water per minute through transpiration (evaporation of water through stomatal pores). What is the rate of heat lost through transpiration?