While you are looking at the image of your feet in a plane mirror, you see a scratch in the glass. What is the approximate height of the scratch from the floor? Assume your eyes are 1.75m above your feet.​

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?

Which of the following list the divisions of the geologic time scale in order from longest to shortest