A bullet of mass 50g moving with an initial velocity 100m/s strikes a wooden block and comes to rest after penetrating a distance 2 cm in it. calculate. a) initial momentum of the bullet.
b). Final momentum of the bullet.
c). Retradation caused by the wooden block.
d). Resistive force exerted by the wooden block.
​

Afrequency generator sends a 550 hz sound wave through both water and ice. what is the difference in wavelength between the wave produced in ice and the wave produced in water?

Which component of the earth’s atmosphere is decreased due to photosynthesis?

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