While digging in the backyard, you find an old coin. It's mass is 26.76 g and it's volume is 3 cm. What is the density?

When the wave is changed to a sound wave, what type of wave is displayed?

Gauss's law states that the net electric flux ΦE through any closed Gaussian surface is equal to the net charge inside the surface divided by 4πε0. a. True b. False

When does total internal reflection occur? A. when the angle of incidence exceeds the angle of reflection B. when the angle of incidence is less than the angle of reflection C. when the angle of incidence is less than the critical angle D.

In a nuclear reaction, what is the name for the difference in mass when one type of matter is converted into another? A. radiation B. nucleons C. antimatter D. mass defect

The wavelengthâ (w) of a wave varies inversely as its frequencyâ (f). a wave with a frequency of 800 khzâ (kilohertz) has a length of 171m. what is the length of a wave with a frequency of 900 âkhz?

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.