If a star is twice as hot as the Sun and only half the Sun's diameter, it will be less luminous than the Sun
a. True
b. False
Indicate whether the statement is true or false
False
You might also like to view...
A 0.28-kg stone you throw rises 34.3 m in the air. The impulse your hand receives from the stone while it throws the stone is
a. 2.7 N s, up. b. 2.7 N s, down. c. 7.3 N s, up. d. 7.3 N s, down. e. 9.6 N s, up.
A hologram is simply a
A) complex diffraction grating. B) thin sheet of non-cubic transparent crystals. C) pair of semi-crossed polarization filters. D) thin photographic film with microscopic images over the entire surface. E) none of the above
The acceleration due to gravity on the Moon's surface is one-sixth that on Earth. What total force would be required to accelerate a 30-kg object at 6.0 m/s2 on the Moon?
a. 30 N c. 180 N b. 10 N d. 49 N
Before light can undergo total internal reflection when incident on material 1 from material 2, what must be true of the indices of refraction?
a. n1 = n2 c. n1 < n2 b. Either n1 or n2 must be equal to 1. d. n1 > n2