A wheel is rotating about an axis that is in the z-direction. The angular velocity ωz is -6.00 rad/s at t = 0, increases linearly with time, and is +4.00 rad/s at t = 18.0 s. We have taken counterclockwise rotation to be positive.

If the new moon happens on january 15th, what shape will it be on february 6th?

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?