2017年Physics Bowl物理碗真题PDF下载
1.A scientist computes a speed as 12 mm/3 μs . Which one of the following choices represents this same speed?
(A) 4 km/s (B) 4 nm/s (C) 4 m/s (D) 4 Gm/s (E) 4 pm/s
2.A small object is released from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the object was released?
(A) 10.0 m (B) 20.0 m (C) 40.0 m (D) 80.0 m (E) 160.0 m
3.Which one of the following choices is a vector quantity?
(A) average speed
(B) kinetic energy
(C) mass
(D) time
(E) acceleration
4.At which one of the following temperatures does water undergo a phase change into a solid at a pressure of 1.0 atm?
(A) 273 K (B) 0 °F (C) 32 °C (D) 100 °F (E) 0 K
5.Which one of the following choices is most closely associated with the following observation about an isolated object: “The linear momentum of the object is constant.”?
(A) Huygen’s Principle
(B) Kepler’s First Law
(C) Hooke’s Law
(D) Pascal’s Principle
(E) Newton’s First Law
6.A mass connected to an ideal spring oscillates with a period
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