Using a digital balance the mass of a certain piece of wood is read as 12.946 g. Thinking in terms of accuracy and significant figures, what value would you record on your data sheet if the balance is accurate to one-tenth of a gram?
A) 12.9 g
B) 12.95 g
C) 13 g
D) 13.0 g
A
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Work-Energy Theorem: A driver, traveling at 22 m/s, slows down her 2000 kg truck to stop for a red light. What work is done on the truck by the friction force of the road?
A. -2.2 × 104 J B. -4.4 × 104 J C. -4.8 × 105 J D. -9.7 × 105 J
Answer the following statement(s) true (T) or false (F)
1. The three bulbs are in parallel. T or F? 2. In a circuit, all the current follows whatever is the path of least resistance.
Valles Marineris is the most striking example of a(n)
A) scarp. B) shield volcano. C) oceanic trench. D) impact crater. E) rift valley.
As a rock sinks deeper and deeper into water of constant density, what happens to the buoyant force exerted on it by water on it if it started above the surface of the water?
A) The buoyant force keeps increasing steadily. B) The buoyant force remains constant. C) The buoyant force first increases and then remains constant. D) The buoyant force steadily decreases.