Electromagnetic radiation with a wavelength of 700 nm would be:
A) X-rays.
B) red light.
C) violet light.
D) ultraviolet light.
E) microwaves.
B
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Two ceramic cylinders have the following properties. Cylinder A has radius R and height 2H, while Cylinder B has radius 3R and height H/4. Their resistances are measured, and it is found that 
What is the ratio of the resistivities 
of the ceramics from which they are made?
A. 1/36 B. 9/8 C. 16/9 D. 1/18 E. 36 F. 9/4
Which of the following objects is obeying Newton's laws of motion?
A. a satellite orbiting Earth B. a runner racing around a track C. a skydiver falling under the force of gravity D. a sleeping cat E. All of these choices are correct.
Time Dilation: A spaceship enters the solar system moving toward the Sun at a constant speed relative to the Sun. By its own clock, the time elapsed between the time it crosses the orbit of Jupiter and the time it crosses the orbit of Mars is 50.0 minutes. How fast is the spaceship traveling towards the Sun? The radius of the orbit of Jupiter is 778 × 109 m, and that of the orbit of Mars is 228 × 109 m.
A. 0.319c B. 0.438c C. 0.522c D. 0.671c E. 0.982c
Which of the following types of protogalactic clouds is most likely to form an elliptical galaxy?
A) a low-density cloud with quite a bit of angular momentum B) a dense cloud with quite a bit of angular momentum C) a very low-density cloud with very little angular momentum D) a very massive cloud with any density and a lot of angular momentum E) a dense cloud with very little angular momentum