Most comets are discovered when their coma develops, giving them a fuzzy appearance instead of stellar such as asteroids
Indicate whether the statement is true or false
TRUE
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Jill's weight is 500 newtons. If Earth gravitationally collapses from its present radius of 6000 km down to a radius of only 600 km, Jill's weight would then be
A) 50,000 newtons. B) 5000 newtons. C) 5 newtons. D) unchanged. E) 2000 newtons.
Without glasses, a person can comfortably read a magazine when it is held at 60 cm from his eyes. What should be the focal length of his contact lenses to allow him to read the magazine comfortably at a distance of 30 cm?
A) -30 cm B) +30 cm C) -60 cm D) +60 cm E) +90 cm
In an isochoric process where the pressure increases from to , does the internal energy of the system increase or decrease and does the temperature increase or decrease?
a. The internal energy increases and the temperature decreases. b. The internal energy increases and the temperature increases. c. The internal energy decreases and the temperature decreases. d. The internal energy decreases and the temperature increases.
When light escapes from near a black hole, we see a(n) ________ redshift
Fill in the blank(s) with correct word