Sally stands 3 meters from the fulcrum. Reggie weighs 800 N and stands 2 meters from the fulcrum. The see saw is balanced. How much does sally weight?

Why does changing the shape on an object have no affect on the density of that object?

The magnetic field due to the loop always opposes the external magnetic field. (b) The flux due to the loop always has the opposite sign as the flux due to the external magnetic field.

Why do you think most models show the scale sizes of the planets but do not show the scale distances between the planets?

When a wave propagates through a medium the molecules of the medium?

Science and technology are closely related, but not the same. Which of the following is most likely a result of technology, not science?

Would time travel mean that parallel universes would be created off our linear time sequence to ensure the universe doesn't collapse itself because of significant events being drastically changed in the way it shapes the universe?

What is the central core of hair

A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet

What does a hurricane hunter do

Why is fluorine special in terms of electronegativity?