| Quiz | Energy |
|---|---|
| Name | |
| Result | FAILED |
| Score | 21 / 30 (70%) |
| Passing score | 24 |
| Quiz took | 18 min 52 sec |
| Quiz finished at | 2024-10-20 15:48:34 |
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 main energy store in jet fuel
Name the main energy store in a cup of tea
A 12 N weight is moved 6 m. Calculate the work done
How much energy does a 800 W microwave use when operating for 5 minutes?
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.
Explain the main energy change in a car's engine
What energy transfer is occurring in a falling rain drop?
What is the extension of a 50 N/m spring that stores 100 J
Which of these is not a renewable source of energy?
Friction always
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 moving bike
What are the units for energy
Name the main energy store in a stretched spring
What is the kinetic energy of a 4 kg bowling ball moving at 4 metres per second?
Name the energy store that best describes the food in your belly, from your last meal
Energy cannot be
Work done is another name for
The brakes of a car transfer
Name the energy store in a loose roof tile, which is about to fall
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
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.
Another term for friction from air is
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.
What is the power of a hairdryer that uses of 180 kJ of energy in 2 minutes
What is the approximate GPE of a 3 kg bowling ball on a 10 m high shelf? Assume g = 10 m/s2.
Which of these is not a fossil fuel?