Q2: Heat And TemperatureQ2.1 A 4.5 g lead BB moving at 46 m/s penetrates a wood block and comes to restinside the block. If the BB lead absorbs half of the kinetic energy, what is the changein the temperature of the BB? (Use specific heat of lead -128 K/kg. C)Q2.2 A copper piece has a mass of 50,0 g and is initially at a temperature of 20.0 °C. Ifit is supplied with 300 J of heat, what will be its final temperature? [specific heat ofcopper c=386 J/kg. "CJ

Answered: Image /qna-images/answer/42399207-7630-4673-866a-4f559feef616.jpg

Answered: Q2.1 A 4.5 g lead BB moving at 46 m/s…

Similar questions

An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 492-g sample of silver at an initial temperature of 86°C is placed in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Calculate the mass of the aluminum cup. ?g
Q.13 What happens if you add heat to water that is at the temperature of 100°C? Does the temperature change? Explain.
P3. After a particularly cold night, Alice leaves a tub of water outside. You may consider the ground and air to have temperatures of T. = -10°C and T = 10°C respectively. How thick is the layer of ice that forms at the bottom of the tub of water, after the tub has been left outside for a long time? The tub of water initially has a layer of water of thickness họ = 10 cm. You may assume that the ground and air remain at a constant temperature throughout, and that the side lengths of the tub a, b > ho, i.e. the heat conduction is one- dimensional. Density of ice and water are Pice = 920 kg/m³ and Pw = 1000 kg/m³. Ice and water have thermal conductivities of kice = 2.22 WK-1m-1 and kiw = 0.556 W K-1m-1.
A copper sample (ccu = 387 J/kg•K) of mass mẹ = 75 g and temperature Te = 312ºC is dropped into a glass beaker that contains a mass of water me = 220 g (cw = 4190 J/kg•K). %3D The initial temperature of the water and the beaker is Tw,b = 12.0°C. What is the final temperature of the copper, beaker, and water? * The heat capacity (the specific heat times the mass) of the beaker is Cb' = 190 J/K.
A 850 g aluminum pan is removed from the stove and plunged into a sink filled with 11.0 L of water at 20.0 °C. The water temperature quickly rises to 24.0 °C. Part A What was the initial temperature of the pan in °C? Express your answer with the appropriate units. Tinitial Submit Part B 11 Tinitial VO V—| ΑΣΦ Request Answer What was the initial temperature of the pan in °F? Express your answer with the appropriate units. VE ΑΣΦ C Ć SALA CO — ? ? °F °C
A hot air balloon uses the principle of buoyancy to create lift. By making the air inside the balloon less dense then the surrounding air, the balloon is able to lift objects many times its own weight. A large hot air balloon has a maximum balloon volume of 2090 m3. a. If the air temperature in the balloon is 54 °C, how much additional mass, in kilograms, can the balloon lift? Assume the molar mass of air is 28.97 g/mol, the air density is 1.20 kg/m3, and the air pressure is 1 atm.
2.12 A mass of 5 kg of water is contained in a piston-cylinder device at 125 kPa. Initially, 2 kg of the water is in the liquid phàse and the rest is in the vapor phase. Heat is now transferred to the water, and the piston, which is resting on a set of stops, starts moving when the pressure inside reaches 300 kPa. Heat transfer continues until the total volume increases by 20%. a) Determine the initial and final temperatures. b) Calculate the mass of liquid water when the piston first starts moving. c) Calculate the work done during this process. d) Show the process on a P-V diagram
A 355mL cup of hot chocolate has an initial temperature of 49°C. How many Calories of thermal energy will the liquid exchange if the drinker’s body temperature is 37°C? Assume hot chocolate is basicallywater. CH2O = 1 cal/kg0 C

Q2.1 A 4.5 g lead BB moving at 46 m/s penetrates a wood block and comes to rest inside the block. If the BB lead absorbs half of the kinetic energy, what is the change in the temperature of the BB? (Use specific heat of lead -128 K/kg. C)