What causes a short circuit?
a. when there is too much resistance and the current decreases
b. when there is too much resistance and the current increases
c. when there is too little resistance and the current increases
d. when there is too little resistance and the current decreases

Jackson is designing a new heater, and he wants to experiment with different thermally conductive materials. which of these materials would be useful in conducting heat?

Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?