Starting from one oasis, a camel walks 25 km in a direction 30° south of west and then walks 30 km toward the north to a second oasis. What is the direction from the first oasis to the second oasis?
a. 21° N of W
b. 39° W of N
c. 69° N of W
d. 51° W of N
e. 42° W of N
d
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What is the frequency of the shortest wavelength light that can be detected by the average human eye?
a. 0.0025 Hz b. 7.5 × 10^14 Hz c. 3.0 × 10^8 m/s d. 700 nm e. 400 nm
Dr. Chuck projects a ball horizontally from a lab bench. The ball lands on a bullseye marked on the floor a horizontal distance away
Compared to the time for the ball to simply drop vertically from the bench, the time in the air for Dr. Chuck's projected ball is A) less. B) the same. C) greater.
T and b quarks are named
a. truth and beauty b. up and down c. top and bottom d. Itchy and Scratchy e. none of the above
Consider an orbit where rc = 1 AU and b = 2 AU. What kind of orbit is this?
A. Circular B. Elliptical C. Parabolic D. Hyperbolic