A uniform disk with a radius of 49.75 cm weighs 175 N. calculate (A) the angular momentum and (B) the rotational kinetic energy when it rotates at 1200 rpm about its geometrical center.​

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

When does your body conduct current more readily?

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)