What is the velocity of an object of mass 1 kg which has 200 J of k.e?

When a body is heated, how fast the temperature of the body changes depends on the material. The thermal energy needed to change the temperature of a body by AT' is determined by the equation AQ = mcAT where AQ is the thermal energy, c is the specific heat of the material, and m is the mass of the body. The specific heat is the thermal energy needed to raise the temperature of 1 gram material by one degree. If a hot metal block is put into cold water in a container, the metal block will be cooled, and the water and the container will be warmed. Eventually, the system will be at a final temperature when thermal equilibrium is reached. The process can be expressed as Heat gained = Heat lost [Heat Gained by the container and water] = [Heat lost by the metal block] The initial temperature T; of the water and the container, the initial temperature of the metal block TB, the final temperature of the system Tf, the specific heat of the container, and the specific heat of the metal block are…

Q4: Water at the rate of 0.8 kg/s is heated from 35 to 40°C in a 2.5-cm-diameter tube whose surface is at 90-C. How long must the tube be to accomplish this heating? Answers: L=0.58 m

The energy reaching Earth from the Sun at the top of the atmosphere is 1.36 x10^3 W/m2, called the solar constant. Assuming that Earth radiates like a blackbody at uniform temperature, what do you conclude is the equilibrium temperature of Earth?

Newton's Law of Cooling The temperature, u, of a heated object at a given time t can be modeled by the equation u(t)= T+ (uo - T)ekt where k < 0 is a constant, T is constant ambient temperature, and zo is the initial temperature of the heated object. Suppose that an object has been heated to 59 degrees celsius and is then allowed to cool in a room that is kept at a constant 31 degrees celsius. If the temperature of the object is 42 degrees celsius after 7 minutes, when will its temperature be 36 degrees celsius? minutes.

Consider a 0.63 kg sample of metal at room temperature of 20 deg C. The addition of 642,000 J increases its temperature to its melting point (782 deg C). An additional 59,000 J causes the sample to completely liquify. a). What is the specific heat capacity of the sample? b). What is the heat of fusion of the sample?

How much energy (in MJ) is needed to raise the temperature of 0.235 m3 of water from 23.5˚C to 81.5˚C [round your final answer to one decimal place]?   {specific heat of water = 4,180 J/(kg∙˚C); density of water = 990.1 Kg/m3}

A mass m of steam at 130º C is used to warm 200 gm of water from 20º C to 50º C.  Write an expression in terms of mass, m, for the heat lost by the steam as it cools to its boiling point.  Write an expression in terms of mass, m, for the heat lost as the water condenses from the steam and then cools to the final equilibrium temperature of 50º C. Then calculate the amount of heat gained by the water, Q gained, raising its temperature from 20º C to 50º C and find the initial mass of the steam needed to complete this process as described.

A 10 kg box is hit by a truck and slides across the concrete. After being hit by the truck the box has an initial velocity of 6m/s and takes 5m to come to a stop. If the box heats up by 10 degrees, what are the specific heat of the box and the coefficient of friction between the box and the concrete?

Meltdown: A certain metal has a melting point of 724 °C, and a heat of fusion (latent heat) of 77.7 J/g. The specific heat of the metal in its solid form is 0.359 J/g. K, its specific heat in its molten liquid form is 0.693 J/g K, and its density is 6.85 g/cm³. A 719 g sample of the metal is placed in a sealed, thermally insulated vessel with a heating element. If the sample is initially a solid at room temperature (20 ° C), how much heat is required melt the sample and bring it to a final temperature of 999 °C?