Spiral galaxies are much more common in the centers of rich clusters than in the universe as a whole
Indicate whether the statement is true or false
FALSE
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A particle moving with a constant acceleration has a velocity of 20 cm/s when its position is x = 10 cm. Its position 7.0 s later is x = ?30 cm. What is the acceleration of the particle?
a. ?7.3 cm/s2 b. ?8.9 cm/s2 c. ?11 cm/s2 d. ?15 cm/s2 e. ?13 cm/s2
Plane polarized light is sent through two consecutive polarizers, the first having its plane of polarization in the same direction as the incident light and the second having its plane at 90° to the original plane of polarization. A third polarizer, with plane of polarization at 60° to the original plane of polarization, is placed between the two other polarizers. What fraction of the original
intensity now gets through? a. 0.56 c. 0 b. 0.19 d. 0.25
If you began at rest and ended at rest and the average speed of your trip was 10 kph, that means:
a. for most of the trip, you were going 10 kph. b. sometimes you were going faster than 10 kph. c. 10 kph was the fastest you ever went. d. 10 kph was the slowest you ever went. e. you traveled at constant speed throughout the trip.
The diffraction limit is a limit on:
A. A telescope's size. B. A telescope's angular resolution. C. A telescope's spectral resolution.