An empty spice bottle has an inner volume of 1.31 × 10^-4 m3 . It has a mass of 112 g when filled with air, and it displaces 1.63 × 10^-4 m3 of water when fully submerged. What volume of mercury (rHg = 13.6 × 10^3 kg/m3) must be added to the empty bottle so that it will just submerge?
a. 3.75 cm3
b. 12.0 cm3
c. 101 cm3
d. 147 cm3
e. 237 cm3
A
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A lamp rated 23W 120V means that it will deliver 23 W
A) when the voltage across it is 120 V. B) whether or not it is connected to 120 V. C) as long as the current is ac. D) none of the above
A water pipe with inner radius r1 is connected to a junction with two equal-diameter pipes. Water flows through each of the two pipes with a speed of v. If the diameter of each of the two pipes is ¼ the diameter of the single pipe, what is the flow rate in the single pipe?
a. v/8 b. v/4 c. 4v d. 8v
Life is present on Earth because of oxygen
a. True b. False Indicate whether the statement is true or false
Two blocks in contact with each other are pushed to the right across a rough horizontal surface by the two forces shown. If the coefficient of kinetic friction between each of the blocks and the surface is 0.30, determine the magnitude of the force exerted on the 2.0-kg block by the 3.0-kg block
a.
15 N
b.
25 N
c.
11 N
d.
22 N
e.
33 N