If an electromagnetic wave has components Ey = E0 sin(kx - ?t) and Bz = B0 sin(kx - ?t), in what direction is it traveling?
A) -x
B) +x
C) +y
D) -y
E) +z
B
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Which of these were observed from Earth, prior to spacecraft missions to Mars?
A) seasonal changes in the polar caps B) eruptions of Mount Olympus C) dust storms capable of covering the entire planet D) Both A and C are correct. E) All of the above are correct.
Which of the solar system objects listed below is most similar to Earth in terms of mass and density?
a. Mercury b. Moon c. Venus d. Mars e. Deimos
4.00 moles of a monatomic ideal gas at a temperature of 340 K are compressed adiabatically from an initial volume of 70.0 L to a final volume of 30.0 L. What is the final pressure in the gas?
A) 663 kPa B) 581 kPa C) 106 kPa D) 42.1 MPa E) 2.17 MPa
When Nellie Newton hangs by the ends of a rope draped over a large pulley, the tension in each supporting vertical strand is
A) half her weight. B) equal to her weight. C) twice her weight. D) none of the above