Thermal Properties Of Matter CBSE Questions & Answers

A cowboy fires a silver bullet with a mass of 2.00 g and with a muzzle speed of 200 m/s into the pine wall of a saloon. Assume that all the internal energy generated by the impact remains with the bullet. What is the temperature change of the bullet?

What mass of steam initially at 130\(^\circ \)C is needed to warm 200 g of water in a 100-g glass container from 20.0\(^\circ \)C to 50.0\(^\circ \)C?

Liquid helium has a very low boiling point, 4.2 K, and a very low latent heat of vaporization, 2.09 \( \times \) \({\rm{1}}{0^{\rm{4}}}\) J/kg. If energy is transferred to a container of boiling liquid helium from an immersed electric heater at a rate of 10.0 W, how long does it take to boil away 1.00 kg of the liquid?

The temperature of a silver bar rises by 10.0\(^\circ \)C when it absorbs 1.23 kJ of energy by heat. The mass of the bar is 525 g. Determine the specific heat of silver.

A 1.50-kg iron horseshoe initially at 600\(^\circ \)C is dropped into a bucket containing 20.0 kg of water at 25.0\(^\circ \)C. What is the final temperature? (Neglect the heat capacity of the container and assume that a negligible amount of water boils away.)

An aluminum calorimeter with a mass of 100 g contains 250 g of water. The calorimeter and water are in thermal equilibrium at 10.0\(^\circ \)C. Two metallic blocks are placed into the water. One is a 50.0-g piece of copper at 80.0\(^\circ \)C; the other block has a mass of 70.0 g and is originally at a temperature of 100\(^\circ \)C. The entire system stabilizes at a final temperature of 20.0\(^\circ \)C. Determine the specific heat of the unknown sample.

A 3.00-g copper penny at 25.0\(^\circ \)C drops from a height of 50.0 m to the ground. (a) If 60.0\(\% \) of the change in potential energy goes into increasing the internal energy, what is its final temperature?

A water heater is operated by solar power. If the solar collector has an area of 6.00 \({{\rm{m}}^{\rm{2}}}\) and the power delivered by sunlight is 550 W/ \({{\rm{m}}^{\rm{2}}}\), how long does it take to increase the temperature of 1.00 \({{\rm{m}}^{\rm{3}}}\) of water from 20.0\(^\circ \)C to 60.0\(^\circ \)C?

A 3.00-g lead bullet at 30.0\(^\circ \)C is fired at a speed of 240 m/s into a large block of ice at 0\(^\circ \)C, in which it becomes embedded. What quantity of ice melts?

A 1.00-kg block of copper at 20.0\(^\circ \)C is dropped into a large vessel of liquid nitrogen at 77.3 K. How many kilograms of nitrogen boil away by the time the copper reaches 77.3 K? (The specific heat of copper is 0.092 0 cal/g . \(^\circ \)C. The latent heat of vaporization of nitrogen is 48.0 cal/g.)

In an insulated vessel, 250 g of ice at 0\(^\circ \)C is added to 600 g of water at 18.0\(^\circ \)C. What is the final temperature of the system?

In an insulated vessel, 250 g of ice at 0\(^\circ \)C is added to 600 g of water at 18.0\(^\circ \)C. How much ice remains when the system reaches equilibrium?

If 90.0 g of molten lead at 327.3\(^\circ \)C is poured into a 300-g casting form made of iron and initially at 20.0\(^\circ \)C, what is the final temperature of the system? (Assume that no energy loss to the environment occurs.)

A surveyor uses a steel measuring tape that is exactly 50.000 m long at a temperature of 20\(^\circ \)C. The markings on the tape are calibrated for this temperature. (a) What is the length of the tape when the temperature is 35\(^\circ \)C? (b) When it is 35\(^\circ \)C, the surveyor uses the tape to measure a distance. The value that she reads off the tape is 35.794 m. What is the actual distance?

A 200- \({\rm{c}}{{\rm{m}}^{\rm{3}}}\) glass flask is filled to the brim with mercury at 20\(^\circ \)C How much mercury overflows when the temperature of the system is raised to 100\(^\circ \) C The coefficient of linear expansion of the glass is 0.40 \( \times \) \({\rm{1}}{0^{ - {\rm{5}}}}\) \({{\rm{K}}^{ - {\rm{1}}}}\).