When referring to wave motion, what is the meaning of the expression out of phase?
Out of phase refers to the position of the vibrating particle's displacement from its
equilibrium position relative to another particle's displacement when two waves meet
out of phase the crests of one wave coincide with the troughs of the other.
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What causes the changing dark and light features visible on the Martian surface from Earth?
A) seasonal growth of vegetation B) the flooding of the network of canals from seasonal polar ice melting C) lava fields, similar to those found on the Moon D) highly cratered and eroded areas that are frequently covered and uncovered by dust E) huge storms like those on Jupiter with winds that often reach speeds of hundreds of kilometers per hour
Cathode rays and ________ are both streams of electrons.
Fill in the blank(s) with the appropriate word(s).
A billiard ball is moving in the x direction at 40.0 cm/s and strikes another billiard ball moving in the y direction at 30.0 cm/s. As a result of the collision, the first ball moves at 50.0 cm/s, and the second ball stops. What is the change in kinetic energy of the system as a result of the collision?
a. 0 c. some negative value b. some positive value d. No answer above is correct.
Several objects were called planets when they were originally discovered, but are no longer called planets
Indicate whether the statement is true or false