As you are sitting in your chair the force of gravity is pulling you down. what force is causing you to stay in the chair instead of falling through the chair?

a. normal.

b. gravity.

c. applied.

Which one of the following research methods can show cause and effect

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .