A certain lever has a mechanical advantage of 5.5. How many heavy of a load could the lever lift with an input force of 20.0 N?

The lowest note on a grand piano has a frequency of 28.1 Hz. It is a fixed string oscillating in its fundamental (longest wavelength) mode. The string is 2.00 m long and has a mass of 340 g.

Speed refers to what and is it scalar or vector

At a carnival, you can try to ring a bell by striking a target with a 8.91-kg hammer. In response, a 0.411-kg metal piece is sent upward toward the bell, which is 3.88 m above. Suppose that 21.

How many neutrons does element x have if it's atomic number is 31 and it's mass number is 88?

Your Energy Content. The power needed to operate your body is about 100 watts. Suppose your body could run on fusion power and could convert 0.7% of its mass into energy.

When you are travelling downhill on a roller coaster, you experience a light feeling in your stomach. why?

Sound waves transport: a. only matter b. only energy c. both matter and energy d. matter when passing through a medium and energy passing through vaccum

What's the number 9?

A car travels along a straight line at a constant speed of 60.0 mi/h for a distance d and then another distance d in the same direction at another constant speed. The average velocity for the entire trip is 30.0 mi/h.

Why is it dangerous to be exposed to X-rays but not (or at least much less) dangerous to be exposed to radio waves?