The only spacecraft to have visited Uranus and Neptune was:

A) Pioneer 10.
B) Pioneer 11.
C) Voyager 1.
D) Voyager 2.
E) Cassini.


D

Physics & Space Science

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Wire is wound on a square frame, 30 cm by 30 cm, to form a coil of 7 turns. The frame is mounted on a horizontal shaft through its center (perpendicular to the plane of the diagram), as shown in the figure

The coil is in clockwise rotation, with a period of 0.060 s. A uniform, horizontal, magnetic field of magnitude 0.40 T is present. At a given instant, the plane of the coil forms a 60° angle with the horizontal, as shown. At that instant, what is the magnitude of the emf induced in the coil? A) 13 V B) 23 V C) 2.1 V D) 3.6 V E) 26 V

Physics & Space Science

The function of polarizing filters in viewing 3-D slides or movies is to provide each eye

A) the ability to see parallax. B) a balanced intensity. C) an independent left or right-eye view. D) a stereoscopic view. E) with light polarized at right angles to each other.

Physics & Space Science

Observer A sees a pendulum oscillating back and forth in a relativistic rocket and measures its period to be TA. Observer B moves along with the rocket and measures the period of the pendulum to be TB

What is true about these two time measurements? A) TA > TB B) TA = TB C) TA < TB D) TA could be greater or smaller than TB depending on the direction of the motion.

Physics & Space Science

A rock attached to a string swings in a vertical circle. Which free-body diagram could correctly describe the force(s) on the rock when the string is in one possible horizontal position, where

image is the normal force,image is weight, and image is tension?
 
a.
image

b.
image
c.
image
 
d.
image
e.
image

Physics & Space Science