A 1 kg mass is suspended on the end of a string and it is swinging back and forth. If the string is plucked, the speed of the pulse
1.is fastest when the mass is at its highest point in the swing.
2.is fastest when the mass is at its lowest point in the swing.
3.is fastest when the mass is in the middle of its way down from the highest to the lowest point in its swing.
4.has the same speed at all points of the swing; the pulse's speed is not a function of the position of the mass as it swings.
2
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According to the figure, how do the positions of sunspots appear to change during one sunspot cycle? Do they get closer to or farther from the equator with time?
What will be an ideal response?
Most of the deuterium that formed right after the Big Bang:
A) is still around today. B) broke down into electrons and neutrons. C) turned into dark matter. D) quickly burned into helium nuclei. E) was found in the globular clusters.
The concept of the dual nature of light indicates that light acts sometimes like a(n) ______________ and sometimes like a(n) ______________
Fill in the blank(s) with correct word
While a camera has film where the image is formed, the eye forms the image on the:
a. cornea. c. pupil. b. optic nerve. d. retina.