Support reaction Cy in the truss below is:
(A) 200 N
(B) 250 N
(C) 500 N
(D) 650 N
(A) 200 N
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According to the nebular theory, what is the asteroid belt?
A) It is material left over from the interstellar cloud that never contracted with the rest of the gases to form the solar nebula. B) It consists of planetesimals that formed beyond Neptune's orbit and never accreted to form a planet. C) It consists of objects that fragmented from the Sun during a catastrophic collision early in the formation of the solar system. D) It consists of planetesimals that formed between the orbits of Mars and Jupiter but which Jupiter's gravity prevented from becoming a planet. E) It consists of planetesimals formed in the outer solar system that were flung into distant orbits by encounters with the jovian planets.
The gravitational force between two metal spheres in outer space is 1000 N. How large would this force be if each of the two spheres had twice the mass?
A. 1000 N B. 2000 N C. 4000 N D. 16,000 N
The impedance of the parallel RLC circuit shown is given by
A.
B.
C.
D.
E.
A lump of clay is thrown at a wall. A rubber ball of identical mass is thrown with the same speed toward the same wall. Which statement is true?
a. The clay experiences a greater change in momentum than the ball. b. The ball experiences a greater change in momentum than the clay. c. The clay and the ball experience the same change in momentum. d. It is not possible to know which object has the greater change in momentum.