In one particular case, the limiting angle of resolution for an eye is 1.4 × 10-4 rad. What is the minimum separation between two point sources of light that the eye can distinguish if they are at a distance of 40 m from the observer?
A) 2.8 mm
B) 5.6 mm
C) 1.4 mm
D) 8.4 mm
E) 4.7 mm
B
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A water hose has a flow rate of 3.0 kg/s of water. If the velocity of the water as it leaves the hose is 5.0 m/s, then the force to hold the hose is
A. 15 N. B. 26 N. C. 30 N. D. 45 N. E. 57 N.
Normal atmospheric pressure is
a. 14.7 psi. b. 1 N/m2. c. zero. d. 760 mm of mercury. e. 101,000 pascals. f. none of the above.
A parallel plate capacitor has a potential difference between the plates of 80 V. If the charge on one of the plates of the capacitor is +8.0 ?C, what is the electrical energy stored by this capacitor?
A) 640 × 10-6 J B) 320 × 10-6 J C) 5.0 × 10-8 J D) 6.0 × 10-8 J E) 3.0 × 10-8 J
Astronomers use the _______________ alphabet to identify the bright stars in a constellation in approximate order of brightness
Fill in the blank(s) with correct word