Seasons on Mars
A) are similar to those on the Earth but are nearly twice as long
B) are exactly the same at the Earth
C) are more intense than on the Earth but the same length
D) are similar to those on the Earth but half as long
A
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The moon stopped evolving because it is too small to have kept its internal heat
Indicate whether the statement is true or false
A thin uniform film of oil that can be varied in thickness covers a sheet of glass of refractive index 1.52
The refractive index of the oil is 1.64. Light of wavelength 555 nm is shone from air at normal incidence on the film. Starting with no oil on the glass, you gradually increase the thickness of the oil film until the first interference maximum in the reflected light occurs. What is the thickness of the oil film at that instant? A) 139 nm B) 169 nm C) 183 nm D) 84.6 nm E) 91.3 nm
Which of the following is a conservative force? (All refer to a car on a slope.)
a. The force you exert on the car pushing it uphill. b. The force exerted by rain drops falling on the car. c. The frictional force of the road on the car. d. The gravitational force acting on the car. e. The force you exert on the car (pushing it uphill) after it starts to slide downhill.
The paths of the planets' orbits lie in all different directions in the sky.
Answer the following statement true (T) or false (F)