| Quiz | Energy |
|---|---|
| Name | |
| Result | PASSED |
| Score | 27 / 30 (90%) |
| Passing score | 24 |
| Quiz took | 29 min 21 sec |
| Quiz finished at | 2024-01-24 18:06:21 |
What energy transfer is occurring in a falling rain drop?
Which of the following could be used to minimise heat loss from your home?
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.
What is the power of a hairdryer that uses of 180 kJ of energy in 2 minutes
Name the main energy store in a stretched spring
Name the energy store in a loose roof tile, which is about to fall
What is the approximate GPE of a 3 kg bowling ball on a 10 m high shelf? Assume g = 10 m/s2.
Name the main energy store in a cup of tea
Which of these is not a fossil fuel?
Name the main energy store in jet fuel
What is the kinetic energy of a 4 kg bowling ball moving at 4 metres per second?
Energy cannot be
What are the units for energy
What is the height of a 5 kg mass that has a GPE of 300 J? Assume g = 10 m/s2.
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.
Another term for friction from air is
Friction always
Explain the main energy change in a car's engine
What is the extension of a 50 N/m spring that stores 100 J
Name the main energy store in a moving bike
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 energy store that best describes the food in your belly, from your last meal
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.
Use pen and paper to calculate the velocity of a 4 kg mass which has kinetic energy of 200 J
Work done is another name for
A 12 N weight is moved 6 m. Calculate the work done
Which of these is not a renewable source of energy?
The brakes of a car transfer
How much energy does a 800 W microwave use when operating for 5 minutes?
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