4. A block with a mass of 2.50 kg is resting on a ramp. If the coefficient of
static friction between the block and the
ramp is 0.350, what maximum angle can the
ramp make with the horizontal
before the block starts to slip?

Which of the following changes to a pipe would increase the conductance by a factor of 12? 1.quadrupling the length and tripling the radius.2.reducing the length by a factor of and doubling the radius.3.tripling the length and reducing the radius by a factor of .4.reducing the length but a factor of and doubling the radius.

Which changes of state do the labels represent? a: b: c:

What is the single most important equation in all of physics?