The arrow points to an example of Wave

Question 5 options:

compression

prism

rarefaction

sound barrier

Atomic nuclei of almost all elements consist of

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Ahot-air balloon is 11.0 m above the ground and rising at a speed of 7.00 m/s. a ball is thrown horizontally from the balloon basket at a speed of 9.00 m/s. ignore friction and air resistance and find the speed of the ball when it strikes the ground.