A wave sent out from a source is reflected back in 1x10 -3 sec. If the velocity of the wave
is 3x 10²m/s what is the distance of the reflecting
Surface from the source​

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

Suppose you have a box. which of these is not necessarily a true statement regarding the relationship between the force applied to the box, the work done on the box, and the distance the box is moved? a. if the box is not moved, no force is being applied to the box. b. if no force is applied to the box, no work is done on the box. c. if work is done on the box, then a force is applied to the box. d. if work is done on the box, then the box is moved a distance.