What is earthsine (aka Ashen light)?
A. the sunlight that shines on the face of the Moon that we never see.
B. the light from the Moon that illuminates Earth's surface at night.
C. the light we see at dawn just before the Sun rises.
D. sunlight reflected by Earth that illuminates the dark portion of the Moon.
sunlight reflected by Earth that illuminates the dark portion of the Moon.
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Bulk Modulus: A 12-L volume of oil is subjected to pressure which produces a volume strain of -3.0 × 10-4. The bulk modulus of the oil is 6.0 × 109 Pa and is independent of the pressure. The change in the pressure of the oil in megapascals is closest to
A. 1.2 MPa. B. 1.4 MPa. C. 1.6 MPa. D. 1.8 MPa. E. 2.0 MPa.
The temperature of 100 g of water is to be raised from 10°C to 90°C. The energy needed to do this is about
A. 5 × 103 cal. B. 6 × 103 cal. C. 8 × 103 cal. D. 5.4 × 104 cal. E. 1 × 103 cal.
A 200 g hockey puck is launched up a metal ramp that is inclined at a 30° angle
The coefficients of static and kinetic friction between the hockey puck and the metal ramp are ?s = 0.40 and ?k = 0.30, respectively. The puck's initial speed is 63 m/s. What vertical height does the puck reach above its starting point? A) 130 m B) 270 m C) 200 m D) 66 m
You press a stick that has a varying cross-sectional area horizontally between the palms of your hands. The area of the stick pushing against your left palm is twice the area of the stick pushing against your right palm.The pressure on your left palm is one half the pressure on your right palm
a. True b. False Indicate whether the statement is true or false