Why do Terrestrial planets not have rings?
a. Terrestrial planets rotate in the opposite direction of the Sun
b. Terrestrial planets do not have large enough masses to retain particles in rings.
c. Terrestrial planets have a core too rich in heavy metals to retain rings.
d. Terrestrial planets are too close to the Sun to support a ring system.
e. Terrestrial planets are not gaseous bodies.
b
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Snell's Law: A flashlight beam makes an angle of 60° with the plane of the surface of a calm lake before it enters the water. In the water what angle does the beam make with the plane of the surface? The index of refraction of water is 1.33.
A. 0° B. 30° C. 60° D. 22° E. 68°
The curved section of a speedway is a circular arc having a radius of 190 m. This curve is properly banked for racecars moving at 34 m/s. At what angle with the horizontal is the curved part of the speedway banked?
A) 34° B) 30° C) 28° D) 32° E) 26°
The coefficient of linear expansion of aluminum is 24 × 10-6 K-1 and the coefficient of volume expansion of olive oil is 0.68 × 10-3 K-1
A novice cook, in preparation of some pesto, fills a 1.00-L aluminum pot to the brim and heats the oil and the pot from an initial temperature of 15°C to 190°C. To his consternation some olive oil spills over the top. How much? A) 0.11 L B) 0.12 L C) 0.13 L D) 0.14 L E) 0.15 L
An 8 000-kg aluminum flagpole 100-m long is heated by the sun from a temperature of 10°C to 20°C. Find the work done (in J) by the aluminum if the linear expansion coefficient is 24 × 10^?6 (°C)?1 . (The density of aluminum is 2.7 × 10^3 kg/m3 and 1 atm = 1.0 × 10^5 N/m2.)
a. 287 b. 425 c. 213 d. 710 e. 626