A vertical loop has a radius of 20.0 meters. At what speed must the cart be travelling to experience a normal weight at the top of the loop?

If this same speed is maintained throughout the loop, then what would their apparent weight be at the bottom of the loop ( 1/2 g, 1 g, 2g, 2.5 g. etc.)

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two

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?

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions