If you have a mass of 80 kg and your computer has a mass of 4 kg, and you are separated by a distance of 0. 25 m, what is the gravitational force of the computer acting on you.

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

because growing process had stoped after 4-5 year

3. dark matter

empty space could also be a simple vacuum