If your mass is 60 kilograms on Earth, what is it on the Moon?
A. 120 kilograms, because the Moon's gravity is greater than Earth's
B. 0 kilograms, because the Moon has no gravity
C. 60 kilograms, because mass does not depend on gravity
D. 360 kilograms, because the Moon is a spherical object
Answer: C
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Which telescope has the largest light-gathering power among the following telescopes?
A) A telescope of diameter 5 cm and focal length 50 cm B) A telescope of diameter 6 cm and focal length 100 cm C) A telescope of diameter 2 cm and focal length 100 cm D) A telescope of diameter 3 cm and focal length 75 cm
If you run a 3000-watt hair dryer for 30 minutes, how much electric energy do you consume?
A) 100 kW ? h B) 6 kW ? h C) 1.5 kW ? h D) 90,000 kW ? h E) None of the above.
The wave-related quantity algebraically equivalent to 1/f is:
a. c. A b. T d.
What role does helium play in spectral classification?
What will be an ideal response?