Which two body systems work together closely to produce movement in human limbs

A heavier mass m1 and a lighter mass m2 are 19.0 cm apart and experience a gravitational force of attraction that is 9.20 x 10^-9 N in magnitude. The two masses have a combined value of 5.80 kg. Determine the value of each individual mass.

Mary slides down a snow-covered hill on a large piece of cardboard and then slides across a frozen pond at a constant velocity of 2.40 m/s.

Which element will have the greatest attraction for the calcium electrons (if they could combine) ? N P As

People with normal vision cannot focus their eyes underwater if they aren't wearing a face mask or goggles and there is water in contact with their eyes. Explain why not.

A child on a playground swing makes a complete to-and-fro swing each 2 seconds. The period is: 0.5 seconds 1 second 2 seconds

One problem for humans living in outer space is that they are apparently weightless. One way around this problem is to design a space station that spins about its center at a constant rate.

Three asteroids have exactly the same amount of mass. The distance from asteroid A to asteroid B is 300 km, the distance from asteroid B to C is 400 km, and the distance from C to A is 100 km.

what determines the quality of a conductor

If the mass of an object increases, predict what will happen to the coefficient of sliding friction.

2x-4≤12 A x≤8 B x≤12 C x≤16