What do mechanical waves need to travel through?

Earth and the Moon are attracted to each other by gravitational force. Does the more massive Earth attract the less massive Moon with a force that is greater, smaller, or the same as the force with which the Moon attracts Earth?

160-lbm astronaut took his bathroom scale (a spring scale) and a beam scale (compares masses) to the moon where the local gravity is g = 5.48 ft/s2. Determine how much he will weigh on the beam scale.

Why is light energy on the left side of the equation?

1. a. What is the name of the 2d Century Roman Scientist and Astrologer who created a set of "Handy Tables of data to compute the position of the Sun, moon and stars?

Which types of muscle enables your stomach to produce a churning sound

What is the meaning of the washing motion of the younger monk? is it the same when dobbins does it?

A teacher pulls a box of books on a horizontal floor with a force of 290 N directed 40.9 degrese above the horizontal. the coefficiant of kinetic friction between the box and the floor is 0.184. the mass of the box and books is 44.5 kg.

The dark colored belts on jupiter are brighter than the surrounding regions and the light colored zones when viewed in infrared or heat radiation because

Which is a characteristic of centripetal acceleration? It is directed outward from the center of a circle. It is directed inward, toward the center of a circle. It results in an object moving faster. It results in an object moving slower.

Any value giving up from the best alternative is called