If a ship has a mass of 10 million kilograms, what volume of fresh water must it displace in order to float? The density of water is 1000 kg/m3
A) 1010 m3
B) 1012 m3
C) 104 m3
D) 107 m3
E) 108 m3
C
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Vicki very closely examines her new ruby ring with the jeweler's "loop." The ruby appears 7.0 times larger through this lens than when she views it close-up without the "loop"
If her near point is 35 cm, what is the focal length of the lens of the "loop"? A) 5.8 cm B) 6.7 cm C) 4.2 cm D) 3.6 cm E) 7.0 cm
A wheel rotates about a fixed axis with an initial angular velocity of 20 rad/s. During a 5.0-s interval the angular velocity decreases to 10 rad/s. Assume that the angular acceleration is constant during the 5.0-s interval. How many radians does the wheel turn through during the 5.0-s interval?
a. 95 rad b. 85 rad c. 65 rad d. 75 rad e. 125 rad
A conducting sphere of radius 20.0 cm carries an excess charge of +15.0 µC, and no other charges are present. (k = 1/4??0 = 8.99 × 109 N ? m2/C2) The potential (relative to infinity) due to this sphere at a point 12.0 cm from its center is closest to
A) zero. B) 674 kV. C) 1130 kV. D) 3380 kV. E) 9380 kV.
A 4.00-kg mass is attached to a very light ideal spring hanging vertically and hangs at rest in the equilibrium position
The spring constant of the spring is 1.00 N/cm. The mass is pulled downward 2.00 cm and released. What is the speed of the mass when it is 1.00 cm above the point from which it was released? A) 0.0443 m/s B) 0.0744 m/s C) 0.0201 m/s D) 0.0866 m/s E) The mass will not reach the height specified.