The condensation sequence cannot explain the composition of the terrestrial and Jovian planets
Indicate whether the statement is true or false
F
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What observational evidence do we have that black holes exist?
What will be an ideal response?
Quasars are most common with redshifts
a. less than 0.1 b. less than 0.5 c. of about 2 d. greater than 6 e. greater than 8
A light ray strikes a hexagonal ice crystal floating in the air perpendicular to one face, as shown below. The hexagonal faces of the crystal are perpendicular to the plane of the page. All the rays shown are in the plane of the page, and nice = 1.30. Which outgoing ray is correct when the incoming ray strikes the crystal face on the left head on?
a.
A
b.
B
c.
C
d.
D
e.
E
A car on a roller coaster starts at zero speed at an elevation above the ground of 26 m. It coasts down a slope, and then climbs a hill. The top of the hill is at an elevation of 16 m
What is the speed of the car at the top of the hill? Neglect any frictional effects. A) 14 m/s B) 18 m/s C) 10 m/s D) 9 m/s E) 6 m/s