You're at rest in a hammock when a hungry mosquito sees an opportunity for lunch. A mild 2-m/s breeze is blowing. If the mosquito joins you for lunch it should hover over you by flying
A) against the breeze at 2 m/s.
B) with the breeze at 2 m/s.
C) a bit faster than wind speed.
D) none of the above
Answer: A
You might also like to view...
Write out the number 7.35 × 10-5 in full with a decimal point and correct number of zeros
A) 0.00000735 B) 0.0000735 C) 0.000735 D) 0.00735 E) 0.0735
A 3.50-kg block is pulled along a moving conveyor belt at a constant speed of 0.500 m/s relative to a stationary observer while the belt moves at a constant speed of 0.200 m/s in the opposite direction. If the coefficient of kinetic friction is 0.400, the magnitude of the mechanical energy dissipated, in J, caused by the force of friction on the block in 8.00 s is
a. 5.6. b. 22.0. c. 32.9. d. 54.8. e. 76.8.
A 1959 penny has a diameter of 19.55 mm, a thickness of 1.55 mm, and a mass of 2.500 g. What is its density?
A) 5.37 × 103 kg/m3 B) 21.5 × 103 kg/m3 C) 1.34 × 103 kg/m3 D) 2.68 × 103 kg/m3 E) 1.86 × 10-4 kg/m3
How much mass is lost during a reaction in which 1.7 × 108 MeV of energy is released?
A) 1.8 × 10-8 kg B) 5.7 × 10-9 kg C) 1.9 × 10-17 kg D) 3.0 × 10-22 kg E) 6.2 × 10-28 kg