A force of 5 N is applied to the end of a lever that has a length of 2 meters. If the force is applied directly perpendicular to the
lever, calculate the magnitude of the torque acting on the
lever.

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?