A mechanic pushes a 2672 kg car from rest to a speed of v, doing 5045 J of work in the process. During this time, the car moves 37m. Neglecting friction between the car and the road, find v.

Aforce of 9.00 newtons acts at an angle of 19.0 to the horizontal. what is its component in the horizontal direction?

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?