In buying a product, a shopper has a choice of the following amounts, all at the same price. Which is the best buy?
a. 432 cc
b. 1 pint
c. 1 half-liter
d. 450 mL
c
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For a point mass equal to that of the Sun, how far does the Schwarzschild radius extend from its center?
a. A few kilometers away b. A few solar radii away c. A few astronomical units (AU) away d. A few parsecs away
Which of the following is an example in which you are traveling at constant speed but not at constant velocity?
A) rolling freely down a hill in a cart, traveling in a straight line B) driving backward at exactly 50 km/hr C) driving around in a circle at exactly 100 km/hr D) jumping up and down, with a period of exactly 60 hops per minute E) none of the above
In the case of constant acceleration, the average velocity equals the instantaneous velocity:
a. at the beginning of the time interval. b. at the end of the time interval. c. half-way through the time interval. d. three-fourths of the way through the time interval.
What is the limiting angle of resolution for a lens of radius 2.0 mm when viewing with light having a wavelength of 600 nm?
A) 1.8 × 10-7 rad B) 1.3 × 10-4 rad C) 1.5 × 10-7 rad D) 1.5 × 10-4 rad E) 1.8 × 10-4 rad