# Physics

Welcome to the portal about Physics.

## New Topics

### Calculation of the Free Fall

If we know the local gravity respectively the gravitational acceleration, the acceleration due to gravity or the location factor of a location, we...

### Calculation of the Local Gravity

The local gravity, which we also know as gravitational acceleration, acceleration due to gravity or location factor can easily be calculated from the...

### What is falling faster in a vacuum: A ball or a feather?

Assuming, we have a ball and a feather and drop them next to each other in a vacuum, what would fall faster? The ball or the feather? Our physics...

### Centripetal Force and Centrifugal Force: What is the Difference?

I have a small problem in my physics lessons. Repeatedly, I confuse the two forces "centripetal force" and "centrifugal force". Can someone explain...

### Difference between Volt, Watt and Ampere

Can anyone explain the difference between watt, voltage and...

### Local Gravity on the Moon

Everybody knows since the sixth grade that the mean local gravity (gravitational acceleration) on earth is 9.81 m/s² (at the equator it is slightly...

Guest: The object remains the same weight. Only the force required to lift this object becomes about six times lighter than on...

Question | Local Gravity on the Moon

Chemox: A ball and a feather are falling at exactly the same speed in a vacuum. Normally, you would be right with your assumption that the ball is faster,...

Square: The centrifugal force comes from the Latin words centrum = middle and fugere = flee. So, it's fleeing from the middle. The centripetal force...

Chemox: All three terms are related to electricity. Depending on what you want to measure you take one or them. Each are units in which a certain amount of...

Question | Difference between Volt, Watt and Ampere

Chemox: Let's say you're in a carousel that's spinning in circles. This is also the place where you as a human being can feel the two forces...

Science5000: The local gravity respectively location factor on the surface of the moon is 1.625 m/s². This makes the same object about six times lighter on the...

Question | Local Gravity on the Moon