Ahelium-eon laser eits light that has a wave leng th of 6 3 2,8 nm. the circular aperture o 5 em estinate the diametr of the beam io km crom the laser cm.

How much force was applied to an object if was moved 2 meters and the work done on the object was 8 joules? a. 0.25 n b. 4 n c. 6 n d. 16 n

What are two different ways you could find the value of a? explain these methods.

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.