An amusement park designer wants his swing to have a centripetal
acceleration of 19 m/s2. if the velocity of the swing is 17 m/s, how long
should the chain on the swing be?
o
a. 14.8 m
o
b. 14.0 m
15.2 m
13.6 m

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?

If you let go of the notebook after lifting it, will it move? how?

Objects a and b are visible in the night sky. six months later they are still visible, but object b shows less parallax than object a. which object is closer? a. a b. b c. you would need to wait another six months in order to figure this out. d. you would need to know the objects' angular diameters in order to figure this out.