57 This is an American merchant ship anchored two ________ miles outside the harbor.
(A)naval
(B)sea-going
(C)coastal
(D)nautical

57 This is an American merchant ship anchored two ________ miles outside the harbor. (A)naval (B)sea-going (C)coastal (D)nautical

58 Please prepare all your identifications and go to the front deck for ________. (A)roll call (B)rule plan (C)rubric control (D)role play

59 Which of the following is not part of the standard procedure when ordered to abandon a boat? (A)Entering lifeboat (B)Informing coast radio stations (C)Raise alarm (D)Conduct diving survey

60 Which of the following should be executed when crew overboard happens? (A)Raise the alarm and conduct the search. (B)Report the weather situation. (C)Brief on safety regulations. (D)Speed up the pumping rate.

1. A jet plane in straight horizontal flight passes over your head. When the plane is directly above you, the sound seems to come from a point behind the plane in a direction 45° from the vertical. The speed of the sound is vs. The speed of the plane is about: (A) vs (B) 0.5vj (C) 0.7 Ivj (D) 1.41vj (E) 2vs.

2. A horizontal force of 10 N pushes a 0.5-kg block against a vertical wall. The book is initially at rest. If the static coefficient of friction (μs) is 0.6 and the kinetic coefficient of friction  (μk) is 0.4, which of the following is true? (A) The frictional force is 4.9 N (B) The frictional force is 6.0 N (C) The frictional force is 4.0 N (D) The normal force is 4.9 N (E) The normal force is 10.9 N.

3. An ideal spring is hung vertically from the ceiling. When a 2.0-kg mass hangs at rest from it, the spring is extended 5.0 cm from its relaxed length. A downward external force is now applied to the mass to extend the spring an additional 10 cm. While the spring is being extended by the force, the work done by the spring is about: (A) -3.92 J (B)-1.96 J (C) 0 J (D) 1.96 J (E) 3.92 J.

4. A particle moves along the x axis. The net force on the particle, which is conservative, is given by F = (8 N/m3)x3. If the potential energy is taken to be zero for x = 0 then the potential energy as a function ofx is given by: (A) (2 J/m4)x4 (B) (-2 J/m4)x4 (C) (24 J/m2)x4 (D) (-24 J/m2)x2(E) (8 J/m2)x2.

5. Bullets from two guns are fired with the same velocity. The bullet from gun #1 is twice as heavy as the bullet from gun #2, and gun #1 weighs three times as much as gun #2. The ratio of the momentum imparted to gun #1 to that imparted to gun #2 is: (A) 2:3 (B) 3:2 (C) 3:1 (D) 2:1 (E) 6:1.

6. A forward force acting on the axle accelerates a rolling wheel on a horizontal surface. If the wheel does not slide, the frictional force of the surface on the wheel is: (A) zero. (B) in the forward direction and does zero work on the wheel. (C) in the forward direction and does positive work on the wheel. (D) in the backward direction and does zero work on the wheel. (E) in the backward direction and does negative work on the wheel.

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