Jenny and Simone release their snowballs from the same height, at the same time and with the same speed. Simone's is thrown upward while Jenny’s is thrown downward. Which one hits the ground first (ignore air resistance)?
A. the one thrown upward
B. the one thrown downward
C. they hit at the same time
D. it depends on the initial height
B. the one thrown downward
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An object has a volume of 4.0 m3 and weighs 40,000 N. What will its apparent weight be in water of density 1000 kg/m3?
A) 40,000 N B) 39,200 N C) 9,800 N D) 800 N
A comet consists of
a. a nucleus only. b. a coma only. c. a tail only. d. all of these.
A ten loop coil of area 0.23 m2 is in a 0.047 T uniform magnetic field oriented so that the maximum flux goes through the coil. The average emf induced in the coil is
A) 1.1 × 10-3 V. B) 0. C) 1.1 × 10-2 V. D) 1.1 × 10-4 V. E) 1.1 × 10-1 V.
Compound Microscope: Jack and Mary view the same microorganism through the same compound microscope. Mary's near point distance, NM, is twice as large as Jack's near point distance, NJ. If Mary sees the microorganism with magnification MM, with what magnification does Jack see it?
A. 2 MM B. MM/2 C. 4 MM D. MM/4 E. 8 MM