Ahorizontal force of 300 n is applied to move a 55 kg sofa across a 10 m level surface. what is the net work done by this 300 n force?
a. 0 j
b. 550 j
c. 3000 j
d. 16500 j

Part a constants huck finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion what is huck's velocity (speed and direction) relative to the river bank? express your answer to three significant figures and include the appropriate units. relative to the shore)

Unpolarized light whose intensity is 1.19 w/ is incident on a polarizer. (a) what is the intensity of the light leaving the polarizer? (b) if the analyzer is set at an angle of = 41.0∘ with respect to the polarizer, what is the intensity of the light that reaches the photocell?

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant