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Torque can be calculated by multiplying the force (N) applied at  90∘90∘ to the lever arm at a distance (mm) from the pivot point (point of rotation), the compound SI unit for the torque is N⋅mN⋅m. If the force (at 90∘90∘ to the lever arm) applied is 15 N15 N and it is applied at 2.0 m2.0 m from the pivot point (point of rotation), what is the torque on the lever?

If y = (1 + x) (1 + x2) (1 + x4), then dy/dx at x = 1 is

1) 20

2) 28

3) 1

4) 0  

Draw the Lewis structure for vinyl bromide C2H3Br. Be certain you include any lone pairs.

If Star B is discovered orbiting the same black hole once every 12years, find the orbital distance of Star B.
(Star A orbits the black hole at a distance of 2.5X10^14 m onceevery 24 yeares,mass of the black hole unknown)

prove

Anything about black hole?