Physics, 31.07.2019 15:10 erinxmeow8
Why does the number of sunspots change over time? the temperature of the sun increases and decreases over time. the brightness of the sun increases and decreases with time. the sun's magnetic field changes in strength and shape with time. the solar wind changes speed with time, obscuring them. the number of sunspots does not changeâthe spots are simply on the other side?
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Physics, 22.06.2019 03:50
Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?
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Physics, 22.06.2019 05:30
What are similarities and differences of reflection, refraction, diffraction and absorption?
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Physics, 22.06.2019 06:30
How much force was applied to an object if was moved 2 meters and the work done on the object was 8 joules? a. 0.25 n b. 4 n c. 6 n d. 16 n
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Physics, 22.06.2019 20:00
In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm
Answers: 1
Why does the number of sunspots change over time? the temperature of the sun increases and decrease...
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