A 50.0 kg shell is fired from a cannon on Earth's surface with a
potential energy of 196,000 J. What is the shell's maximum height?
a 700 m
b 480 cm
C 500 m
d 400 m

Explain the doppler effect in terms of frequency, wavelength, and speed.

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.