Consider diving 30.0 m below the surface of the ocean (density 1.03 grams/cc)
(a) what is the gauge pressure at that depth, in atmospheres?
(b) what is the absolute pressure at that depth, in atmospheres?
(c) If you were in a submarine at that depth, what would be the total force on a 100. cm2 window?
(a) 2.99 atm (b) 3.99 atm (c) 3.03 × 103 N.
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A 2000 kg car is traveling on a banked curved icy road. The road is banked at an angle of 12.0 degrees and has a radius of curvature of 500 m. The velocity of the car necessary to travel on the icy road without sliding is
A. 32.3 m/s. B. 40.5 m/s. C. 42.8 m/s. D. 49.5 m/s. E. 50.2 m/s.
A car travels 20 km west and then 20 km south. What is the magnitude of its displacement vector?
A) 20 km B) 0 km C) 40 km D) 28 km
The half-life of a muon is 2.2 ?s. How fast is it moving relative to an observer who says its half-life is 4.4 ?s?
a. 0.87 c b. 0.75 c c. 0.97 c d. 0.72 c e. 0.50 c
The angular measurement in hours, minutes, and seconds from the celestial prime meridian eastward is called _______________
a. sundial b. protractor c. declination d. right ascension