Why do astronomers suspect 'Oumuamua is not from our solar system?
A. It came from the direction of the constellation Lyra.
B. Its composition is too different from the Sun's.
C. Its shape is too elongated compared to asteroids in the solar system.
D. It is moving too fast to be in orbit around the Sun.
Answer: D
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An electron (m = 9.1 × 10^?31 kg) has a speed of 0.90c. What is the difference between its relativistic momentum and its non-relativistic momentum (in kg m/s)?
a. 4.3 × 10^?22 b. 3.2 × 10^?22 c. 5.4 × 10^?22 d. 6.5 × 10^?22 e. 2.5 × 10^?22
A chunk of material from the interior of a white dwarf would weigh about 100 times more than an Earth rock of the same size.
Answer the following statement true (T) or false (F)
What is a carbon star?
A) a red giant star whose atmosphere becomes carbon-rich through convection from the core B) a star that fuses carbon in its core C) another name for a white dwarf, a remnant of a star made mainly of carbon D) a star that produces carbon by fusion in its atmosphere E) a star that is made at least 50 percent of carbon
An electron absorbing an ultraviolet photon will be ejected with a _________ energy than an electron absorbing a violet photon
Fill in the blank(s) with correct word