A student releases a marble from the top of a 210cm ramp. The marble increases speed steadily and reaches the bottom of the ramp with a speed of
70cm/s. Determine all unknowns and answer the following question.
Si
210
cm/s
S
140
cm/s
Sf
70
cm/s 7
d =
unity
t =
unit
How long did the marble take to reach the bottom of the ramp?
unit

Pleas

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?

The process of a material going through a change of state from a gas to a liquid

What is the quantity which is measured by the area occupied below the velocity- time graph?