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Can you explain the different ways heat can travel?

Heat can travel through 3 different processes: conduction, convection and radiation. Conduction is caused by atoms bumping into each other, transferring energy and therefore heat. An example of this would be...
JG
Answered by Jake G. • Physics tutor
4092 Views

What is meant by the conservation of energy?

Energy cannot be destroyed or created - it is always transferred between different objects in different forms. Hence, energy is 'conserved'. The most basic example is dropping a stationary rubber ball from a...
JH
Answered by Jonathan H. • Physics tutor
5251 Views

Explain the difference between current and voltage

Current is defined as the amount of electrons that flow through a wire per second Voltage is defined as the amount of energy that each electron carries as it passes through the wire
HK
Answered by Harout K. • Physics tutor
2965 Views

If a car drives at 5 ms^-1 for 10 seconds and then 6 ms^-1 for 5 seconds, how far has it travelled in total?

The equation used here is speed = distance / time (s=d/t). Firstly the 30 ms^-1. Rearrange the equation to find distance (st=d). 5ms^-1 x 10s = 50m. The second stint is 6ms^-1 x 5s = 30m. This makes the tota...
MP
Answered by Marcus P. • Physics tutor
3245 Views

A mass of 2kg is dropped from rest at a height of 10m. i) What is the initial GPE of the mass? ii) What is the final velocity of the mass when it hits the ground?

Part i Gravitational Potential Energy (GPE) = mass x gravitational acceleration constant x heightGPE = 2 x 9.81 x 10 = 196.2J Part ii Conservation of energy states that the sum of the GPE and KE at the intia...
ZS
Answered by Zaakir S. • Physics tutor
4705 Views