| Quiz | Energy |
|---|---|
| Name | |
| Result | FAILED |
| Score | 23 / 30 (76.7%) |
| Passing score | 24 |
| Quiz took | 1 h 24 min 46 sec |
| Quiz finished at | 2023-06-22 12:54:34 |
What is the kinetic energy of a 4 kg bowling ball moving at 4 metres per second?
Which of the following could be used to minimise heat loss from your home?
What is the height of a 5 kg mass that has a GPE of 300 J? Assume g = 10 m/s2.
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
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.
What is the extension of a 50 N/m spring that stores 100 J
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.
What is the approximate GPE of a 3 kg bowling ball on a 10 m high shelf? Assume g = 10 m/s2.
What are the units for energy
What energy transfer is occurring in a falling rain drop?
A 12 N weight is moved 6 m. Calculate the work done
Name the main energy store in a moving bike
Explain the main energy change in a car's engine
Friction always
Name the main energy store in a stretched spring
Which of these is not a renewable source of energy?
Name the main energy store in jet fuel
Another term for friction from air is
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 energy store that best describes the food in your belly, from your last meal
Work done is another name for
How much energy does a 800 W microwave use when operating for 5 minutes?
The brakes of a car transfer
Name the main energy store in a cup of tea
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.
Which of these is not a fossil fuel?
Use pen and paper to calculate the velocity of a 4 kg mass which has kinetic energy of 200 J
Name the energy store in a loose roof tile, which is about to fall
Energy cannot be
What is the power of a hairdryer that uses of 180 kJ of energy in 2 minutes