A 3.0-kg and a 5.0-kg box rest side-by-side on a smooth, level floor. A horizontal force of 32 N is exerted on the 5.0-kg box pushing it against the 3.0-kg box, and, as a result, both boxes slide along the floor
How hard do the two boxes push against each other? A) 12 N
B) 20 N
C) 24 N
D) 32 N
E) 0 N
A
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Which is the binary system, and what is the type, in the above figure?
a. Alcor A and B, spectroscopic
b. Alcor and Mizar, visual binary
c. Mizar A and B, visual binary
d. None of the other choices are correct.
A kid slides down an icy (frictionless) hill starting from rest. At the top his gravitational potential energy is 500 J.His kinetic energy at the top of the hill is
a. 0 J. b. 500 J. c. some value between 0 and 500 J. d. none of the above.
The large space telescope that has been placed into an Earth orbit has an aperture diameter of 2.40 meters. What angular resolution will this telescope achieve for visible light of wavelength ? = 4.80 × 10^?7 m?
a. 2.44 × 10^?7 rads b. 2.44 × 10^?4 rads c. 2.44 × 10^?3 rads d. 1.22 × 10^?6 rads e. 2.00 × 10^?6 rads
At the first minima on either side of the central bright spot in a double-slit experiment, light from each opening arrives
A) in phase. B) 45° out of phase. C) 90° out of phase. D) 180° out of phase. E) none of the given answers