Athin sheet of aluminum can block a. alpha particles and beta particles b. gamma rays and alpha particles c. alpha particles only d. gamma rays only

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Which statement is true about an object that is moving in a circular motion due to centripetal force, f, when the radius of its circular motion is doubled? the new force then becomes equal to 2f the new force then becomes equal to f the new force then becomes equal to f/2 the new force then becomes equal to f2 the new force then becomes equal to 1/f