Which of the following scenarios provide evidence for Newton's second law of motion? Select all that apply. a. The force of gravity is stronger on an object with more mass to cause the same acceleration.
b. The friction of ice causes a hockey puck to come to a stop.
c. A group of balanced forces on a table cause it to remain at rest.
d. Pushing a full wheelbarrow is harder than pushing an empty wheelbarrow.

An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states

Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)

Abeam of electrons moves at right angles to a magnetic field of 4.5 × 10-2 tesla. if the electrons have a velocity of 6.5 × 106 meters/second, what is the force acting on the electrons? the value of q = -1.6 × 10-19 coulombs.