What are the three factors which can limit the resolving power of a telescope?
What will be an ideal response?
diffraction, optical quality, and atmospheric conditions
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A 1000-kg car and a 2000-kg car are hoisted the same vertical distance in a service station. Raising the more massive car requires
A) less work. B) as much work. C) twice as much work. D) four times as much work. E) more than four times as much work.
State Newton's third law of motion
What will be an ideal response?
Which of the following statements about the Moon is not correct?
A. The acceleration due to gravity on the Moon is weaker than on Earth. B. Earth's gravitational pull on the Moon equals the Moon's gravitational pull on Earth. C. There is a net force acting on the Moon. D. The Moon is not accelerating.
The period of oscillation for a signal having a frequency of 60 Hz is 60 seconds
a. True b. False Indicate whether the statement is true or false