Calculate the kinetic energy output for a toy car when its battery provides 80 kJ and it has an efficiency of 84%.

(a)  

Calculate the useful energy output for a light bulb when total energy input is 3000 J and it has an efficiency of 32%.

(a)  

Calculate the useful energy output for a toaster when total energy input is 51230J and it has an efficiency of 60%.

(a)  

Calculate the useful energy output for a buzzer when total energy input is 8700 J and it has an efficiency of 3%.

(a)  

Calculate the total energy output for a device which has an efficiency of 23% and produces 13.8 kJ of useful energy.

(a)  

Calculate the total energy output for a toy car which has an efficiency of 84% and produces 67200 J of kinetic energy.

(a)  

Calculate the total energy output for a light bulb which has an efficiency of 32% and produces 960 J of useful energy.

(a)  

Calculate the total energy output for a toaster which has an efficiency of 60% and produces 30738 J of useful energy.

(a)  

Calculate the total energy output for a buzzer which has an efficiency of 3% and produces 261 J of useful energy.

(a)  

Calculate the efficiency of a device which was supplied with 60000 J of energy and generated 13800 J of useful energy.

(a)  

Calculate the efficiency of a toy car which was supplied with 80000 J of input energy and generated two different forms of energy, including 12800 J of thermal energy.

(a)  

Calculate the efficiency of a light bulb which was supplied with 3000 J of input energy and generated two different forms of energy, including 2040 J of thermal energy.

(a)  

Calculate the efficiency of a toaster which was supplied with 51230 J of input energy and generated two different forms of energy, including 30738 J of thermal energy.

(a)  

Calculate the efficiency of a buzzer which was supplied with 8700 J of input energy and generated two different forms of energy, including 261 J of sound energy.

(a)