A metal cylinder of mass `0.5` kg is heated electrically by a 12 W heater in a room at `15^(@)` C. The cylinder temperature rises uniformly to `25^(@)` C in 5 min and finally becomes constant at `45^(@)` C Assuming that the rate of heat losss is proportional to the excees temperature over the surroundings,

A metal cylinder of mass 0.5kg is heated electrically by a 12 W heater in a room at 15^(@)C The cylinder temperature rises nuniformly to 25^(@)C in 5 min and finally becomes constant at 45^(@)C Asuming that the rate of heat loss is proporational to the excess temperature over the surroundings .

A metal cylinder of mass 0.5kg is heated electically by a 12 W heater in a room at 15^(@)C The cylinder temperature rises uniformly to 25^(@)C in 5 min and finally becomes constant at 45^(@)C Asuming that the rate of heat loss is proportional to the excess temperature over the surroundings .

A metal ball of mass 2kg is heated means of a 40W heater in a room at 25^(@)C . The temperature of the ball becomes steady at 60^(@)C . Find the rate of loss of heat to the surrounding when the ball is at 39^(@)C .

A metal ball of mass 2kg is heated means of a 40W heater in a room at 25^(@)C . The temperature of the ball beomes steady at 60^(@)C . Assume that the temperature of the ball rises uniformly from 25^(@)C to 39^(@)C "in" 2 minutes. Find the total loss of heat to the surrounding during this period.

A metal ball of mass 2kg is heated means of a 40W heater in a room at 25^(@)C . The temperature of the ball beomes steady at 60^(@)C . Assume that the temperature of the ball rises uniformly from 25^(@)C to 39^(@)C "in" 2 minutes. Find the total loss of heat to the surrounding during this period.

A metal ball of mass 2kg is heated means of a 40W heater in a room at 25^(@)C . The temperature of the ball beomes steady at 60^(@)C . Find the rate of loss of heat to the surrounding when the ball is at 60^(@)C .

A metal ball of mass 2kg is heated means of a 40W heater in a room at 25^(@)C . The temperature of the ball beomes steady at 60^(@)C . Find the rate of loss of heat to the surrounding when the ball is at 60^(@)C .

A metal ball of mass 1kg is heated by means of a 20W heater in a room at 20^(@)C . The temperature of the ball becomes steady at 50^(@)C . (a) Find the rate of loss of heat to the surrounding when the ball is at 50^(@)C . (b) Assuming Newton's law of cooling, calculate the rate of loss of heat to the surrounding when the ball is at 30^(@)C . (c) Assume that the temperature of the ball rises uniformly from 20^(@)C to 30^(@)C in 5 minutes. Find the total loss of heat to the surrounding during this period. (d) Calculate the specific heat capacity of the metal.

A metal ball of mass 1kg is heated by means of a 20W heater in a room at 20^(@)C . The temperature of the ball becomes steady at 50^(@)C . (a) Find the area of loss of heat to the surrounding when the ball is at -50^(@)C . (b) Assuming Newton's law of cooling, calculate the rate of loss of heat to the surrounding when the ball is at 30^(@)C . (c) Assume that the temperature of the ball rises uniformly from 20^(@)C to 30^(@)C in 5 minutes. Find the total loss of heat to the surrounding during this period. (d) Calculate the speific heat capicity of the metal.

A metal ball of 1kg mass is heated by a 20W heater in a room at 20^(@)C . After some time temperature of ball becomes steady at 50'^(@)C . Find the rate of loss of heat by the ball to surrounding when its temperature becomes 50^(@)C . Also find the rate at which it looses heat to the surrounding when its temperature was 30^(@)C .