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Which list provides evidence for the general theory of relativity?

A
constancy of the speed of light, gravitational redshift, gravitational lensing
B
gravitational lensing, constancy of the speed of light, curvature of space-time
C
changes in a planet’s orbital path, curvature of space-time, length contraction
D
gravitational redshift, changes in a planet’s orbital path, gravitational lensing
44

A negative 0 point 0 6 cap c charge is placed is in a uniform electric field with a strength of 200 cap n over cap c What is the magnitude and direction of the force on the charge?

A
12 cap n in the opposite direction of the field
B
3333 cap n in the same direction of the field
C
12 cap n in the same direction of the field
D
3333 cap n up in the opposite direction of the field
45

Which best explains the arrow’s purpose in the diagram?

A
It is showing the direction that electrons move in, making the sphere negative.
B
It is showing the direction that electrons move in, making the sphere positive.
C
It is showing the direction that protons move in, making the sphere negative.
D
It is showing the direction that protons move in, making the sphere positive.
46

Which best describes the difference between wave A and wave B?

A
Wave A has a greater intensity and transfers more energy.
B
Wave A transfers more energy, but wave B has a greater intensity.
C
Wave B has a greater intensity and transfers more energy.
D
Wave B transfers more energy, but wave A has a greater intensity.
48

How does the circuit change when the wire is added?

A
An open circuit occurs and makes all bulbs turn off.
B
A short circuit occurs and makes bulbs 1 and 2 turn off but keeps bulbs 3 and 4 lit.
C
A short circuit occurs and makes bulbs 3 and 4 turn off but keeps bulbs 1 and 2 lit.
D
A closed circuit occurs and makes all bulbs turn off.
49

Which statement describes what the hand shows?

A
When the current flows down the wire, the magnetic field flows in on the left side of the wire and out on the right side of the wire.
B
When the current flows down the wire, the magnetic field flows out on the left side of the wire and in on the right side of the wire.
C
When the current flows up the wire, the magnetic field flows in on the left side of the wire and out on the right side of the wire.
D
When the current flows up the wire, the magnetic field flows out on the left side of the wire and in on the right side of the wire.

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N/A — Exam Answers — Physics