Which of the following statements best describes an electromagnetic wave with a short wavelength? A.)It has a low frequency and can travel in a vacuum (space)
B.)It has a high frequency and can travel in a vacuum (space
C.)It has a low frequency and can only travel in a medium
D.)It has a high frequency and can only travel in a medium

Achild throws a ball with an initial speed of 8.00 m/s at an angle of 40.0° above the horizontal. the ball leaves her hand 1.00 m above the ground. how long is the ball in flight before it hits the ground?

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final