The Tonga Trench in the Pacific Ocean is 36,000 feet deep. Assuming that sea water has an average density of 1.04 g/cm3, calculate the absolute pressure at the bottom of the trench in atmospheres
A) 1.1 × 103 atm
B) 1.1 × 108 atm
C) 1.1 × 105 atm
D) 1.1 × 106 atm
E) 2.1 atm
A
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The neutron decays into a proton, electron, and an electron antineutrino. Into what does the antineutron decay?
A. a proton, positron, and electron antineutrino B. an antiproton, positron, and electron neutrino C. a proton, electron, and electron antineutrino D. an antiproton, electron, and electron neutrino E. an antiproton, electron, and electron antineutrino
Which of the following could NOT be the result of scattering?
A. A star appears redder than it is. B. A nebula appears bluer than it is. C. A star appears dimmer than it is. D. The sky appears blue. E. None of these choices are correct.
A neutron has a mass of 1.67 × 10^?27 kg. The de Broglie wavelength is 1.4 × 10^?10 m. How fast is the neutron going? (in m/s)
a. 3.4 × 10^3 b. 2.8 × 10^3 c. 3.9 × 10^3 d. 2.6 × 10^3 e. 1.7 × 10^3
An iceboat is traveling in a circle on the ice. Halfway around the circle the sail and the steering mechanism fall off the boat. Which statement is correct?
a. The boat will continue traveling in the circle because there is no friction. b. The boat will continue to travel in the circle because its velocity exerts a force on it. c. The boat will move off on a line tangent to the circle because there is no force on it. d. The boat will move off tangent to the circle because there is a force on it perpendicular to the boat directed to the outside of the circle. e. The boat will move off to the outside perpendicular to the tangent line since a force directed to the outside of the circle always acts on the boat.