The Hubble law does not apply for nearby galaxies.
Answer the following statement true (T) or false (F)
True
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Describe the cycle of life and death we observe in the spiral arms
What will be an ideal response?
Compared with the spectral lines in the solar spectrum, lines in a supergiant star's spectrum are
a. more narrow. b. broader. c. weaker. d. stronger. e. b & c
How do elliptical galaxies typically compare to spiral galaxies?
A) Elliptical galaxies are redder and rounder. B) Elliptical galaxies are redder and flattened. C) Elliptical galaxies are bluer and rounder. D) Elliptical galaxies are bluer and flattened. E) Elliptical galaxies are always much smaller.
A weather balloon contains 12.0 m3 of hydrogen gas when it is released from a location at which the temperature is 22°C and the pressure is 101 kPa
It rises to a location where the temperature is -30°C and the pressure is 20 kPa. If the balloon is free to expand so that the pressure of the gas inside is equal to the ambient pressure, what is the new volume of the balloon? A) 14.0 m3 B) 2.38 m3 C) 49.9 m3 D) 82.6 m3 E) 4.16 m3