What is the net torque produced on a beam by a 5 N weight 2 m from the fulcrum to the left and a 10 N weight 4 m from the fulcrum to the right? A: 30 N m
B: 50 N m
C: -30 N m
D: -50 N m

Aboat that travels with constant speed of 6.10 m/s in still water is to go directly across a river. the current in the river flows at 1.95 m/s. (a) at what angle must the boat be steered?

What is special about a dc circuit ?

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s