| Quiz | Energy |
|---|---|
| Name | |
| Result | FAILED |
| Score | 23 / 30 (76.7%) |
| Passing score | 24 |
| Quiz took | 4 min 53 sec |
| Quiz finished at | 2022-03-14 19:22:26 |
Which of the following could be used to minimise heat loss from your home?
Name the energy store that best describes the food in your belly, from your last meal
How much energy does a 800 W microwave use when operating for 5 minutes?
Explain the main energy change in a car's engine
Another term for friction from air is
A total of 300,000 J of electrical energy is required to raise the temperature of a metal block of mass 2.8 kg from 18 °C to 52 °C. Calculate the specific heat capacity of the metal block in J/kg °C.
Name the main energy store in jet fuel
What is the power of a hairdryer that uses of 180 kJ of energy in 2 minutes
What is the extension of a 50 N/m spring that stores 100 J
2 kg of water is heated from 20 °C to 40 °C. The specific heat capacity of water is 4200 J/kg °C. Calculate the change in thermal energy.
Name the main energy store in a cup of tea
Which of these is not a renewable source of energy?
Which of these is not a fossil fuel?
What are the units for energy
Work done is another name for
What is the approximate GPE of a 3 kg bowling ball on a 10 m high shelf? Assume g = 10 m/s2.
Use pen and paper to calculate the velocity of a 4 kg mass which has kinetic energy of 200 J
A 12 N weight is moved 6 m. Calculate the work done
A motor transfers 100 J of energy by electricity. 60 J are transferred as kinetic energy. 12 J as sound energy and 28 J as thermal energy. Calculate the efficiency of the motor.
Name the main energy store in a stretched spring
Calculate the elastic potential energy of a spring that has been stretched from 20 cm in length to 30 cm in length and has a spring constant of 100 N/m
Name the energy store in a loose roof tile, which is about to fall
What is the kinetic energy of a 4 kg bowling ball moving at 4 metres per second?
Friction always
A 0.5 kg stone falls from a height of 5 m. By considering the gravitational potential energy of the stone and the kinetic energy of the stone, calculate the stone's velocity just before it hits the ground. Assume g = 10 m/s2.
Name the main energy store in a moving bike
Energy cannot be
The brakes of a car transfer
What energy transfer is occurring in a falling rain drop?
What is the height of a 5 kg mass that has a GPE of 300 J? Assume g = 10 m/s2.