Arnold Strongman and Suzie Small each pull on opposite ends of a rope in a tug-of-war. The greater force on the rope is exerted by
A) Arnold.
B) Suzie.
C) same by each
Answer: C
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According to the _____, the Moon formed elsewhere in the solar nebula and was later taken by Earth
A) condensation hypothesis B) fission hypothesis C) capture hypothesis D) large-impact hypothesis
Wire is wound on a square frame, 30 cm by 30 cm, to form a coil of 7 turns. The frame is mounted on a horizontal shaft through its center (perpendicular to the plane of the diagram), as shown in the figure
The coil is in clockwise rotation, with a period of 0.060 s. A uniform, horizontal, magnetic field of magnitude 0.40 T is present. At a given instant, the plane of the coil forms a 60° angle with the horizontal, as shown. At that instant, what is the magnitude of the emf induced in the coil? A) 13 V B) 23 V C) 2.1 V D) 3.6 V E) 26 V
A hypothetical planet has a mass of one-half that of the earth and a radius of twice that of the earth. What is the free-fall acceleration on the planet in terms of g, the free-fall acceleration at the surface of the earth?
A) g B) g/2 C) g/4 D) g/8 E) g/16
From the edge of a roof top you toss a green ball upwards with initial speed v0 and a blue ball downwards with the same initial speed. Neglect air. When they reach the ground below
A) the green ball will be moving faster than the blue ball. B) the blue ball will be moving faster than the green ball. C) the two balls will have the same speed.