A big and a small person wish to parachute at equal terminal velocities. The big person should
A) jump first.
B) jump lightly.
C) pull upward on the supporting strands to decrease the downward net force.
D) get a larger parachute.
E) none of the above
Answer: D
You might also like to view...
Which of the following is true of poor galaxy clusters?
A) They contain about 1500 to 2500 galaxies. B) They primarily contain elliptical galaxies. C) They are densely crowded toward the center. D) They are irregularly shaped.
A cordless phone operates at 900 MHz. What is the wavelength of the electromagnetic wave used by this phone? (c = 3.0 × 108 m/s)
What will be an ideal response?
What do we mean by "The Oxygen Crisis" in relation to the evolution of life on Earth?
A) the extinction of older anaerobic life as oxygen builds up in the atmosphere B) the time period before the development of the ozone layer C) a period when evolution accelerated so rapidly that there was insufficient oxygen available D) the destruction of oxygen in the early atmosphere
The hot gas of the big bang seems to be cool at about 2.7 K because:
A) the expansion of the Universe has decreased the wavelengths of the radiation emitted by the big bang. B) the gas clouds that emitted the photons during the big bang had a temperature of 2.7 K. C) the expansion of the Universe has redshifted the wavelengths of the radiation emitted by the big bang about 1100 times longer. D) the gas clouds that emitted the photons during the big bang emitted blackbody radiation with a wavelength of 2.7 nm.