The Ultimate BIG BAD N5 Engineering Science Quiz

A 230 kg weight is held 4 m above the ground. What is its potential energy?

• 9016kJ

• 11kJ

• 9kJ

• 9200J

An electric cars batteries are charged for 40 minutes using a 230V 12A supply. How much electric energy is used?

• 6624MJ

• 7MJ

• 6.62MJ

• 6.62kJ

Calculate the heat energy gained by 2kg of water if it is raised from 25⁰C to 80⁰C

• 670kJ

• 209kJ

• 500kJ

• 461kJ

A turbine is used to drive a 230v electrical generator. If the output current is 12A, how much electrical energy does the generator produce in 1 hour?

• 936MJ

• 9.936kJ

• 9.9MJ

• 9.9kJ

A 230 kg weight is held 4 m above the ground. What is its potential energy?

• 9kJ

• 11kJ

• 9016kJ

• 9200J

A crane raises a load of 500kg at a speed of 45m/s. Determine the kinetic energy of the load.

• 506J

• 506250kJ

• 506MJ

• 506kJ

Calculate the amount of work done when a force of 150 newtons is used to push a car 20 metres.

• 3kJ

• 3000kJ

• 3200J

• 4J

What is an advantage of wind energy?

• Turbines can be harmful to wildlife

• No harmful gases are produced

• You can always know when there will be wind

• Everyone thinks turbines look good

A 12 year old with a mass of 45 kg climbs up a wall that is 12m in height. Calculate the potential energy he has when he reaches this height

• 5200kJ

• 5.2kJ

• 30J

• 52kJ

A 25m length of wire was stretched by 0.12m when fully tensioned. Calculate the strain in the wire?

• 0.00048

• 0.00048m

• 0.048

• 48m