Question 3 of 32
1 point
ernest rutherford's experiment of a beam of alpha particles aimed at a sheet
of gold foil led him to conclude that an atom's mass is:
a. distributed evenly about the atom.
o
b. located in the atom's nucleus.
o
c. less than the mass of alpha particles.
o
d. balanced by the mass of the atom's electrons.
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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?