Radioactivity

What is the energy of the alpha particle emitted in the decay 243Am ==> 239Np + alpha?

radioactivity

Calculate the value of A for a nucleus whose radius is 4.14à—10-15m.

radioactivity

How much energy is released when 32P, decays by beta- emission?

Binding energy of the nucleus.

Calculate the total binding energy for 3He.

radioacitvity

Calculate the binding energy per nucleon for 3He.

Newton's Law

Explain why Newton's First Law and the Law of Conversation of Momentum are essentially saying the same thing in different ways. Why is it useful to have these two ways of saying it?

Physics Practice Problems

1. (3) Ice has formed on a shallow pond and a steady state has been reached, with the air above the ice at −5C and the bottom of the pond at 4.0C. If the total depth of ice plus water is 1.4 m, how thick is the ice? Assume kice = 0.40 and kwater = 0.12cal/m · C · s. respectively. 2. (3) Professor Denethor has fou ...continues

short answer

At night, when it's dark outside and you are standing in a brightly lit room, it is easy to see your reflection in a window. During the day it is not so easy. Account for these facts.

answer in meters/second

What is the speed of light in diamond?

Refraction problem

Light is reflected from a glass coffee table. When the angle of incidence is 56.0°, the reflected light is completely polarized parallel to the surface of the glass. What is the index of refraction of the glass?