Calculate the ratio of the Einstein coefficients for spontaneous versus stimulated emission (A/B) for a rotational transition of I_2 from J = 5 rightarrow 4. The equilibrium bond length of I_2 is 266.6 pm. ii) Without further calculation, do you expect the ratio of the coefficients to increase or decrease for the transition from J = 50 rightarrow 49? Justify your answer.

How would doubling the made of an object change the objects potential energy

Acoyote chasing a rabbit is moving 8.00 m/s due east at one moment and 8.80 m/s due south 4.25 s later. let the x axis point due east and the y axis point due north. find the direction of the coyote's average acceleration during that time.

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?