False:Laws are theories that have not been proven false.
Density = Mass/Volume
So, given mass = 20 g and volume = 40 cm^3
By substituting in above equation, Density = 20/40 = 0.5 g/cm^3
Hope it helps.
1 watt = 1 joule per second = 1 newton meter per second = 1 kg m2 s-3
The convection currents in the mantle caused the crust on top to break apart & go different directions.
Answer:
Not all appliances run on energy. Some of them run on gas. Some both. It just depends on the age of the appliance, the make of the appliance, and the company who made it.