Two masses, m1 = 1.8 kg and m2 = 1.3 kg, are ar on a track set at a 25 degree incline. they are attached by a string passing over a pulley. the system is released and the masses travel a distance h = 1.0 at a constant speed. what is the work generated by friction?

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Wave functions describe orbitals in a hydrogen atom. each function is characterized by 3 quantum numbers: n, l, and ml. if the value of n = 2: the quantum number l can have values from to . the total number of orbitals possible at the n = 2 energy level is .

What’s #16 asking me and how do i solve it?