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Physics
KS3

What is the law of energy conservation?

Energy cannot be created or destroyed, only transformed to different types of energy.

Answered by Rachel M. Physics tutor
1195 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 t...

Answered by Adeoluwa P. Physics tutor
9339 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 cm2, the pressure is equal to 400/120, which is 3.33 N/cm2

Answered by Jamie M. Physics tutor
988 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 an...

Answered by Milena F. Physics tutor
1133 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, measur...

Answered by Darcy Q. Physics tutor
1809 Views

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