A radio wave has a frequency of 1000Hz. What is the energy of the wave?

Involves the transformation of chemical energy directly into light energy?

What do high pressure systems usually cause?

What is the second most abundant element in the universe? a. h b. c c. fe d. he

Explain what happens to the motion of a particle as a wave passes through a medium. How is the motion of the particles like the motion of a mass on a spring

How did France and Spain use what they learned during the American revolution to benefit their own countries

A hot-air balloon is ascending at the rate of 14 m/s and is 84 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground?

Now assume that the pitcher in Part D throws a 0.145-kgkg baseball parallel to the ground with a speed of 32 m/sm/s in the + x direction. The batter then hits the ball so it goes directly back to the pitcher along the same straight line.

How far away is a cliff if an echo is heard 0.486 s after the original sound? Assume that sound traveled at 343 m/s on that day.

Rafael swings a baseball bat with a force of 25 N. The baseball bat exerts a force of 5 N on the baseball. What is the mechanical advantage of the baseball bat? The mechanical advantage of the baseball bat is

Minerals such as sulfur can sometimes be identified by colors, true or false.