What are the dimensions of velocity?
What will be an ideal response?
[L]/[T]
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The light-gathering power of a telescope increases as the size of the objective increases
a. True b. False Indicate whether the statement is true or false
What is the transit method of finding extrasolar planets?
A) measuring the spectrum of the star for a periodic variation in its Doppler shift B) monitoring a star to detect periodic dips in its brightness from the planet passing behind the star C) monitoring a star to detect periodic dips in its brightness from the planet passing in front of the star D) observing a star during the rare occasion of another star passing directly in front of it; slight changes in how the light is bent by gravity can indicate the presence of planets around the closer star
________ was the first person to measure the circumference of Earth.
A. Galileo B. Aristarchus C. Eratosthenes D. Ptolemy E. Copernicus
Between the consumer and the power plant, most importantly, are
A) huge capacitors. B) generators. C) step-down transformers. D) all of the above E) none of the above