A smooth 10-cm-diameter sphere weighs 6 N. If it is dropped in 5°C water, its terminal velocity will be nearest:
(A) 0.66 m/s
(B) 0.95 m/s
(C) 6.5 m/s
(D) 10.5 m/s
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Radioactivity Basics: In positron decay, the number of protons in the nucleus is
A. decreased by 1. B. decreased by 2. C. increased by 1. D. increased by 2. E. remains unchanged.
A 2.00 kg mass is attached to a spring with a spring constant of 48.0 N/m. If the maximum speed of the mass in this system is 1.14 m/s, what is the energy of the quanta of energy in this system?
A) 2.23 × 10-34 J B) 6.63 J C) 6.63 × 10-34 J D) 5.17 J E) 5.17 × 10-34 J
Why can't Venus's atmosphere break up into small cyclonic storms, like Earth? a. Venus rotates too slowly
b. Venus rotates backwards. c. Venus has a long orbital period. d. Venus has too much CO2 in its atmosphere. e. Venus has no ozone layer to support cyclonic storms.
Sound traveling in air at 23.°C enters a cold front where the air temperature is 2.°C. If the sound frequency is 1500. Hz, determine the speed in the warmer air and in the colder air
What will be an ideal response?