An electric heater supplies heat to a system at a rate of 100W. If system performs work at a rate of 75 Joules per second. At what rate is the internal energy increasing

An electric heater is rated 1500 W. How much energy does it use in 10 hours?

A thermos flask containing tea is shaken vigorously considering tea as a system. (a) Has heat been added to tea? (b) Has work been done on it? (c) Has its internal energy changed? (d) Does its temperature rise?

A substance absorbs heat Q_1 , in going from one state to another and releases Q_2 in coming from the second state to the first state. How much work is done by the substance and what is the change in* the internal energy of the substance.?

An electric heater of resistance 8Omega draws 15A from the service mains in 2hours. Calculate the rate at which heat is developed in the heater.

An electric geaser rated 600 W operates 9 hour/day. What is the cost of the energy to operate it for 30 days Rs 4.00 per KWh?

The population of a place increased to 54,000 in 2003 at a rate of 5% per annum what would be its population in 2005?

A geyser heats water flowing at the rate of 3.0 litres per minute from 27^@ C to 77 ^@C . If the geyser operates on a gas burner. What is the rate of consumption of the fuel if its heat of combustion is 4.0×10 4 J/g?

A light bulb is rated at 100W for a 220V supply. Find the peak voltage of the source.