Awave x meters long has a speed of y meters per second. the frequency of the wave is, a) x/y hertz b) y/x hertz c) y times x hertz d) y+x hertz

When the velocity of an object is doubled, by what factor is its momentum changed? by what factor is its kinetic energy changed? a) the momentum is zero. b) the momentum is not zero. c) difficult to say.

Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.

The ph is the a.independent variable b.the dependent variable c.control group