A sound wave can cause the particles in a medium to vibrate slowly or quickly what is this rate of vibration called? a. compression
b. wavelenght
c. frequency
d. amplitude

You want to move a heavy box with mass 30.0 kg across a carpeted floor. you pull hard on one of the edges of the box at an angle 30∘ above the horizontal with a force of magnitude 240 n, causing the box to move horizontally. the force of friction between the moving box and the floor has magnitude 41.5 n . what is the box's acceleration just after it begins to move