What power is produced by a light bulb that yields 12 mW on a 15 cm x 25 cm sheet of paper that is normal to the line directly toward the bulb, if the paper is 1.7 m from the bulb?
A. 2.9 W
B. 12 W
C. 1.7 W
D. 6.6 W
B. 12 W
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Unlike Mercury, Saturn:
A) is a low-density planet. B) formed along with the Sun. C) formed along with Earth. D) is a Terrestrial planet.
You leave on a 549-mi trip in order to attend a meeting that will start 10.8 h after you begin your trip. Along the way you plan to stop for dinner
If the fastest you can safely drive is 65 mi/h, what is the longest time you can spend over dinner and still arrive just in time for the meeting? A) 2.4 h B) 2.6 h C) 1.9 h D) You can't stop at all.
Most astronomers now believe the demise of the dinosaurs 65 million years ago was caused by a large asteroid impacting the Yucatan peninsula area
Indicate whether the statement is true or false
The intensity of a sunspot is found to be 3 times smaller than the intensity emitted by the solar surface. What is the approximate temperature of this sunspot if the temperature of the solar surface is 5800 K?
a. 4400 K b. 470,000 K c. 1900 K d. 7600 K e. 1400 K