Why is MASS considered a more basic property than WEIGHT?
What will be an ideal response?
A mass may have weight but the weight is a property which changes as the mass is moved around in the universe. Mass is not a property which depends upon position.
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Which of the following can actually escape a black hole?
A. visible light B. electrons C. very low energy radio waves D. very high energy gamma rays E. None of these choices is correct.
The dark halo is now believed to extend at least
A) 100,000 light-years. B) 50 kpc. C) 8 kpc. D) 15,000 light-years. E) 15 kpc.
A car is driven 1200 m north at 20.0 m/s and then driven 1600 m east at 25.0 m/s. What are the magnitude and direction of the displacement for this trip?
a. 1400 m, northeast b. 2000 m, 36.9° north of east c. 2000 m, 53.1° north of east d. 2800 m, 36.9° east of north e. 2800 m, 53.1° east of north
1.50 moles of an ideal gas freely expands from 1.00 liter to 4.50 liters. The change in entropy in the expansion is
A. 5.80 J/K B. 8.50 J/K C. 16.3 J/K D. 18.7 J/K