Equations 2.13-2.17 in section 2.6 are derived for the case of a constant acceleration. Suppose that we had an object with an acceleration that increased linearly with time, i. e. a(t) = a0 t. Which of the equations below is not one of the equations of motion for this case? a. v = v0 + ½ a0 t2 b. x = x0 + v0 t + 1/6 a0 t3 c. vf2 = vi2 + 2 a0 ( xf - xi ) d. All of the above are correct equations of motion for this case.

Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?

A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?

Arrange the images in order to show how lake-effect snow occurs.