the force of gravity acting on astronauts in space near a moon is 100N. If the astronaut moves 2× closer what will the force on them be ?

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

Using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.

Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?