Answer:
c) It has a greater frequency than red light but a smaller frequency than blue light.
Explanation:
According to the relation:
c = frequency × Wavelength
The higher the frequency, the lower the value of wavelength
The order of wavelength is:
Violet < Indigo < Blue < Green < Yellow < Orange < Red
Stated above, frequency is inversely proportional to the wavelength. Thus, the order of wavelength is:
Violet > Indigo > Blue > Green > Yellow > Orange > Red
Thus,
<u>Green light has lower frequency than blue light and higher than red light.</u>
Gravitational force decreases with increasing distance. So it decreases!
Measuring the distance to many distant galaxy with a standard candle technique.
Hubble presented the observational evidence for one of science’s greatest discoveries—the expanding universe. Hubble showed that galaxies are receding away from us with a velocity that is proportional to their distance from us: more distant galaxies recede faster than nearby galaxies.
A redshift is an increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation.
The standard candle technique is particularly valuable when studying very distant objects. Eventually, the effects of parallax stop working because things get too far away. However, since a standard candle depends on the inverse square law, it can reach much further as a result.
As long as we have instruments that can detect a standard candle and measure its brightness, it can be used to measure a distance.
therefore before measuring the recission velocity one must use standard candle technique to eliminate any parallax
learn more about parallax here:
brainly.com/question/1394541
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Cells.
When you have a group of similar cells, you make tissues. This is like having many specialized muscle cells grouping together to make a muscle tissue that can then make something like a bicep. <span />
Let us follow the motion of the hammer first. Because the elevator is in motion, when he drops the hammer, because of inertia, there is a slight moment when the hammer also rises with the elevator. Eventually it will reach its highest peak and drop down to the floor. So, the total time for the hammer to reach the floor would include: (1) the time for it to rise with the elevator to its highest peak and (2) the time for the free fall from the highest peak to the floor.
1.) Time for it to rise with the elevator to its highest peak:
Hmax = v²/2g = (6 m/s)²/2(9.81 m/s²) = 1.835 m
Time to reach 1.835 m = 1.835 m * 1 s/6 m = 0.306 s
Time for the free fall from the highest peak to the floor:
t = √2y/g, where y is the total height
y = 1.835 m + 42 m = 43.835 m
So,
t = √2(43.835 m )/(9.81 m/s²) = 2.989 s
Therefore, the total time is 0.306 s + 2.989 s = 3.3 seconds
2.) Velocity of impact of a free-falling body is:
v = √2gy
v = √2(9.81 m/s²)(43.835 m)
v = 29.33 m/s
