Relative Velocity: On a calm day with no wind, you can run a 1500-m race at a velocity of 4.0 m/s. If you run the same race on a day when you have a constant headwind that slows your speed by 2.0 m/s, how much time would it take you to finish the race?
A. 250 s
B. 750 s
C. 1125 s
D. 9000 s
Answer: B
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Adobe Dreamweaver CC is an example of color-matching software.
Answer the following statement true (T) or false (F)
Your first airless world! (The life-support belt seems somewhat out of adjustment, so you constantly feel as if you're going to explode)
Because of the lack of atmosphere, you must be very careful not to look at the Sun so that you will not be blinded by the ultraviolet and X-ray radiation; however, you are able to determine that the Sun has about the same angular size that you are used to on Earth. Also, because there is no air, you notice that the shadows are completely pitch-dark and there are no sounds at all. Although this world is clearly lifeless, you are surprised to find footprints and car tracks etched in the surface.
A proton in a certain particle accelerator has a kinetic energy that is equal to its rest energy. What is the TOTAL energy of the proton as measured by a physicist working with the accelerator? (c = 3.00 × 108 m/s, mproton = 1.67 × 10-27 kg)
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Consider the first major feature (orderly motions). Which of the following correctly describe patterns of motion in our solar system?
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