Process of Science: Because we do not see stellar parallaxes with our eyes, we conclude that the Earth is at the center of the Solar System
Indicate whether the statement is true or false
FALSE
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The best places for life to have formed on Earth are believed to have been
a. near the south pole on the ice. b. on the continent of Africa in the areas with no water. c. in liquid water, probably in the oceans or pools of water.
Energy in Capacitors: A 12.0-V battery (potential source) is connected across a 6.00-µF air-filled capacitor.(a) How much energy can be stored this way?(b) How much excess charge is on each plate of the capacitor?
What will be an ideal response?
A thin-walled cylindrical tank with a diameter of 2.0 m and wall thickness of 18 mm is open at the top. The height h of water (weight density 5 9.81 kN/m3) in the tank at which the circumferential stress reaches 10 MPa in the tank wall is approximately:
(A) 14 m
(B) 18 m
(C) 20 m
(D) 24 m
A wooden raft has a mass of 55 kg. When empty it floats in water (density with 64% of its volume submerged. What maximum mass of sand can be put on the raft without sinking it?
What will be an ideal response?