Would an emitter of alpha particles be useful in measuring the thickness of a brick

Again I ask ... what are the 4 basic stages of Ideological Subversion?._. Man this place is dead ...

A train is moving on a flat, continuous track. label all forces acting upon the object

What is your frame of reference if you are standing on the sidewalk and see the bus go by? How can you tell that the bus is moving?

What does the word radiation mean

When a hot and cold object are placed in contact, the hot one loses energy. Does this violate energy conservation? Why or why not?

A father racing his son has 1/3 the kinetic energy of the son, who has 1/2 the mass of the father. The father speeds up by 1.4 m/s and then has the same kinetic energy as the son. What are the original speeds of (a) the father and (b) the son

A 2 kg book is pushed across a table is a force 4. Assuming no friction, what is the acceleration of the book?

When electricians use wiring for houses they use both copper and rubber. Which do you think is used as a conductor?

Suppose that 600 W of radiation in a microwave oven is absorbed by 250 g of water in a very lightweight cup. Approximately how long will it take to heat the water from 20 C to 80 C? (A) 50 s (B) 100 s (C) 150 s (D) 200 s

Calculate the velocity of a 1650kg satellite that is in a circular orbit of 4.2 x 10^6m above the surface of a planet which has a radius 3.95 x 10^5 m and the period of the orbit is 2.0 hours.