A submarine dives to a depth of 50 meters in the ocean. (a) What is the gauge pressure at this depth? (b) What is the force acting on a hatch that has an area of 2.5 square meters?
(a) 490,000 Pa, (b) 1,225,000 N
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You are standing on a bathroom scale in an elevator that is not moving and it reads 500 N. The elevator then moves downward at a constant velocity of 4.50 m/s. What does the scale read?
A. 100 N B. 450 N C. 500 N D. 750 N E. 250 N
The field just outside the surface of a long conducting cylinder which has a 2.0-cm radius points radially outward and has a magnitude of 200 N/C. What is the charge density on the surface of the cylinder?
a. 2.7 nC/m2 b. 1.8 nC/m2 c. 3.5 nC/m2 d. 4.4 nC/m2 e. 0.90 nC/m2
A normal lapse rate of 3.5 °F/1000 ft is equivalent to
a. 3.5 °C/m. b. 4 °C/1000 ft. c. 3.5 °C/km. d. 6.5 °C/1000 m.
Determine the resonant frequency of the circuit
a.
159 Hz
b.
32 Hz
c.
5 Hz
d.
500 Hz
e.
79.5 Hz