Aman stands still on a moving escalator and a woman walks past him in the same direction as the escalator. to a stationary observer, the man has a speed of 0.4 m/s and the woman has a speed of 0.52 m/s. from the frame of reference of the man on the escalator, how fast is the woman walking?

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

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