Select all the correct answers. Which two sentences are true about the scattering of light? Only clouds can cause the scattering of light. White objects scatter the least amount of light. Scattering reflects light in random directions. Light cannot be scattered in a vacuum because there is no matter. Most objects scatter all wavelengths of light equally.

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).

What is the role of lenses in microscopy?

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.