| Front | What does gravitational feild strength always point to? |
| Back | The centre of mass of the object creating the gravitational feild. |
| Tags |
| Text | When sound waves travel through air, air particles {{c1::bounce off their neighbours}}. These collisions provide {{c1::the restoring force.}} |
| Back Extra | |
| Tags |
| Front | Define Kilowatt-hour. |
| Back | The amount of energy transferred by a device, with a power of 1 KW, operating for a time of 1 hour. |
| Tags |