I wish to use a positively charged rod to charge a ball by induction. Which statement is correct?
a. The charge on the ball will be positive.
b. The ball must be a conductor.
c. The ball must be an insulator that is connected temporarily to the ground.
d. The ball is charged as the area of contact between the two increases.
b
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Consider a large molecular cloud that will give birth to a cluster of stars. Which of the following would you expect to be true?
A) A few massive stars will form, live, and die before the majority of the star's clusters even complete their protostar stage. B) All the stars in the cluster will be of about the same mass. C) All the stars in the cluster will become main-sequence stars at about the same time. D) All the stars in the cluster will have approximately the same luminosity and surface temperature.
To rotate a stubborn screw, it is best to use a screwdriver that has a
A) wide handle. B) long handle. C) smooth handle. D) none of the above
Describe in detail the observational properties of a pulsar. From these properties, how is it possible to interpret it as a neutron star?
What will be an ideal response?
Like charges _________, unlike charges __________
Fill in the blank(s) with correct word