Would you expect copper or cotton wool to have a higher u value
Back
Card 27
Front
What property of a material tells you how much energy it can store?
Back
Card 28
Front
An ornament has a mass of 0.5 kg. The ornament is made from a material that has a specific heat capacity of £1000 J/kg. How much energy does it take to heat the ornament from 20 to 200 degrees.
Back
Card 29
Front
Do heaters use materials that have a high or low heat capacity.
Back
Card 30
Front
Name 9 types of energy and give an example of each
Back
Card 31
Front
Name 9 types of energy and give an example of each (2)
Back
Card 32
Front
State the principle of the conservation of energy.
Back
Card 33
Front
List the energy transformations that occur in a battery- powered toy car
Back
Card 34
Front
What is the useful type of energy delivered by a motor? in what form is energy wasted?
Back
Card 35
Front
What is the efficiency of a motor that converts 100J of electrical energy into 70J of useful kinetic energy?
