Top answers

What is the law of energy conservation?

Energy cannot be created or destroyed, only transformed to different types of energy.
RM
Answered by Rachel M. • Physics tutor
3263 Views

Why can light travel through space but sound cannot?

Light is a transverse wave whose oscillations are perpendicular to its direction of movement. It is on the electromagnetic spectrum, so it does not need particles to propagate through. It can propagate throu...
AP
Answered by Adeoluwa P. • Physics tutor
15680 Views

If a person weighs 400N and the total area of their feet is 120cm^2, what is the pressure they are exerting on the ground?

The formula for pressure is Pressure = Force / AreaIf the force is 400N and the area is 120 cm 2 , the pressure is equal to 400/120, which is 3.33 N/cm 2
JM
Answered by Jamie M. • Physics tutor
2299 Views

Why do people not fall from the earth?

The earth is a big cube that rotates. It spins at 1.000miles per hour which is around ten times as fast as a speed car. Still we fall not of because the earth is like a magnet for human.It has a south and a ...
MF
Answered by Milena F. • Physics tutor
2441 Views

What’s the difference between mass and weight?

Mass is a measure of how much matter something has in it, measured in Kg, your current mass stays the same no matter where you are.Weight is the measure of the force of gravity acting on an object, measured ...
DQ
Answered by Darcy Q. • Physics tutor
3468 Views