Which of the following is a form of radiation and not a form of matter?
A) an electric current flowing in a copper wire
B) the electron beam that creates the picture on a TV tube
C) carbon dioxide gas
D) None of the above are forms of radiation.
E) All of the above are forms of radiation.
D
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Adiabatic Processes: A monatomic ideal gas at an initial temperature of 390 K is compressed adiabatically from an initial volume of 120 L to a final volume of 40.0 L. What is the final temperature of the gas?
A. 124 K B. 811 K C. 610 K D. 775 K E. 820 K
A cannon recoils while firing a cannonball. The speed of the cannon's recoil is relatively small because the
A) force against the cannon is smaller than against the ball. B) momentum is mainly concentrated in the cannonball. C) cannon has much more mass than the cannonball. D) momentum of the cannon is smaller.
What piece of evidence suggests that the Martian moons did NOT form with Mars?
A) Their composition is significantly different from Mars and the terrestrial planets. B) They have ages that are much younger than Mars. C) They have circular orbits above the Martian equator. D) They rotate synchronously, with one side tidally fixed toward Mars. E) They are both irregularly shaped and are heavily cratered.
The radio signals from Earth are greater than from the Sun
Indicate whether the statement is true or false