The mysterious component if the universe which appears to be pushing galaxies apart is referred to as
A) dark energy
B) anti-gravity
C) dark matter
D) inflation
A
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Except Mercury's orbit, the rest of the planets' orbital planes are inclined by no more than _____
A) 4.6° B) 5.2° C) 6.3° D) 3.4°
Glycerin, with a viscosity of 1.50 Ns/m2, is flowing with an average speed of 1.20 m/s through a tube that has a radius of 5.00 mm and is 25.0 cm long. What is the drop in pressure?
A) 144 kPa B) 45.8 kPa C) 72.0 kPa D) 76.3 kPa E) 129 kPa
Consider a student whose mass is 70 kg. If all his mass were converted to electrical energy, for how many years could he keep a 100-W light bulb burning?
(c = 3.0 × 108 m/s)
A lens of focal length 90 mm is used as a magnifier. The object being viewed is 9.9 mm long, and is positioned at the focal point of the lens. The angle subtended by the image at infinity, in milliradians, is closest to:
A) 110 B) 73 C) 37 D) 147 E) 183