5. A vector A of magnitude 5 V3 units, another vector B of magnitude 10 units are inclined to each other at an angle of 30°. The magnitude of vector product of the two vectors is
(a) 5 V3 units
(b) 10 units
(c) 25 v3 units
(d) 75 units
ing
ns.

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)

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?