The largest effective telescope, created by radio interferometry, is the size of
A) several football fields, in a natural depression in Puerto Rico.
B) tens of miles across, in the deserts of New Mexico.
C) the state of New Mexico.
D) the continental United States.
E) Earth.
E
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The Coriolis force affects tornadoes by:
a. making them spin clockwise in the Northern Hemisphere. b. making them always spin to the left. c. making them always spin to the right. d. making them spin in the same direction regardless of where they are on the Earth's surface. e. making them spin in one direction in the Northern Hemisphere and in the opposite direction in the Southern Hemisphere.
Young open clusters contain a lot of hot, young blue-white stars
Indicate whether the statement is true or false
A cubical box, 5.00 cm on each side, is immersed in a fluid. The gauge pressure at the top surface of the box is 594 Pa and the gauge pressure on the bottom surface is 1133 Pa. What is the density of the fluid?
A) 1100 kg/m3 B) 12,000 kg/m3 C) 2340 kg/m3 D) 1220 kg/m3 E) 1000 kg/m3
Three resistors connected in parallel have the individual voltages labeled ?V1, ?V2 and ?V3, respectively. Which of the following expresses the total voltage ?VT across the three resistors when connected in this manner?
a. ?VT = ?V1 + ?V2 + ?V3 b. ?VT = (1/?V1 + 1/?V2 + 1/?V3) c. ?VT = ?V1 = ?V2 = ?V3 d. ?VT = (1/?V1 + 1/?V2 + 1/?V3)?1