What is the name given to all matter, energy, and space?
a. Universe
b. Galaxy
c. Local group
d. Solar system
a
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Stellar masses are determined by observing ________ stars
Fill in the blank(s) with correct word
When was the existence of the neutron confirmed?
a. in ancient times b. in 1895 c. in 1932 d. in 1969
The laws of thermodynamics can be related to the following: (i) the measurement of temperature, (ii) the lowest temperature possible, (iii) conservation of energy, and (iv) only part of heat energy available may be turned into work. Which of these involve the zeroth and third law?
a. (i) and (ii) c. (i) and (iii) b. (ii) and (iv) d. (iii) and (iv)
In the wave model, light is ________.
A. a mix of electric and magnetic energy B. a packet of energy moving through space C. a compression wave moving through the air D. a ripple in space-time E. the absence of dark