How can you identify an asteroid in a long exposure taken of stars through a telescope? (Assume the telescope is tracking the sky with Earth's rotation, so that stars appear as points of light.)
A) The asteroid will be much brighter than the surrounding stars.
B) The asteroid will be much dimmer than the surrounding stars.
C) The asteroid will appear as a streak because of its motion relative to the stars.
D) The asteroid will have a noticeable circular disk, rather than being just a point of light like the stars.
E) The asteroid will be recognizable by its long, fuzzy tail.
C) The asteroid will appear as a streak because of its motion relative to the stars.
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Answer the following statement(s) true (T) or false (F)
1. Momentum is not conserved in an inelastic collision 2. Energy is not conserved in an inelastic collision.
Short-term and long-term effects of radiation on the health of the recipient are called ______________ effects
Fill in the blank(s) with correct word
Collisions in Two Dimensions: A 1500-kg car traveling at 90 km/h toward the east suddenly collides with a 3000-kg car traveling at 60 km/h toward the south. The two cars stick together after the collision. What is the speed of the cars after collision?
A. 8.3 m/s B. 14 m/s C. 17 m/s D. 22 m/s
What is the wavelength of the line in the Paschen series of hydrogen that is comprised of transitions from the n = 5 to the n = 3 levels? (R = 1.097 × 10^7 m?1 and 1 nm = 10?9 m)
a. 1406 nm b. 1282 nm c. 684 nm d. 750 nm e. 365 nm