The image of a real object formed by a single converging lens cannot be
a. real, inverted, and enlarged.
b. real, inverted, and the same size as the object.
c. virtual, upright, and enlarged.
d. real, inverted, and reduced.
e. virtual, upright, and reduced.
[Ques. 2] The 500 m-long spaceship Springbrake is at rest on the planet Hitest for refueling. Another spaceship, Summerbrake, passes parallel to Springbrake at 0.600c. The crew on Springbrake measure the length of Summerbrake as it passes and find that the length they measure is exactly the same as the known 500 m rest length of Springbrake. If Summerbrake were at rest next to Springbrake, its length would then be measured to be
a. 180 m.
b. 320 m.
c. 500 m.
d. 625 m.
e. 781 m.
[Ques. 3] A high tide is occurring at Charleston, South Carolina (151W, 36N). At approximately what other longitude is a high tide occurring?
a. 29E
b. 151E
c. 61E
d. 61W
e. 29W
[Ques. 4] A diverging lens produces an image of a real object. This image is
a. reduced, upright, and virtual.
b. enlarged, inverted, and real.
c. reduced, inverted, and virtual.
d. enlarged, upright, and real.
e. enlarged, upright, and virtual.
[Ques. 5] A spaceship leaves Earth and maintains a constant force by means of a nuclear engine. As the speed of the spaceship increases, an observer on Earth finds that relative to her the magnitude of the spaceship's acceleration is
a. 0.
b. decreasing.
c. constant.
d. increasing.
e. proportional to the kinetic energy of the spaceship.
[Ques. 6] A high tide is occurring at Charleston, South Carolina (80W, 33N). At approximately what other longitude is a high tide occurring?
a. 100E
b. 80E
c. 60E
d. 40E
e. 20E
[Ques. 7] The image formed by a diverging spherical lens is always
a. upright.
b. reduced.
c. virtual.
d. all of these.
[Ques. 8] Captain Jirk reports to headquarters that he left the planet Senesca 1.88 104 seconds earlier. Headquarters sends back the message: Was that spaceship proper time? It will be spaceship proper time if it was
a. measured by one clock fixed at one spot on Senesca.
b. measured by one clock fixed at one spot on the spaceship.
c. measured by a clock on Senesca at departure and by a clock on the spaceship when reporting.
d. measured by a clock on the spaceship when departing and by a clock on Senesca when reporting.
e. calculated by dividing the distance from Senesca according to Senesca by the speed of the spaceship.
[Ques. 9] It is 12:00 noon local solar time at 75W. The date is March 21 . At which of the following longitudes would an observer be able to see the last-quarter moon rising?
a. 105W
b. 75E
c. 15W
d. 105E
[Ques. 10] A(n) ______________ image is defined as one that cannot be brought to a focus on a screen.
a. virtual
b. real
c. upright
d. inverted
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