Because many objects in space don't radiate any optical (visible) radiation at all.
And other objects, like stars, radiate a lot of invisible radiation in addition to the
visible light from them. So the ability to detect and measure invisible radiation
makes it possible to learn a lot more about objects in space than we could if
we could only use their visible light.
Answer:
Condensation causes dew to form on blades of grass. This is because the water molecules react to the grass when it is heated, and the surroundings became cool. The molecules would bring to calm and turn to liquid.
Explanation:
I just took the test
supply it with more energy. one way to do is to produce vibrations in the same frequency as the wave. This would cause resonance leading to higher amplitude
Answer:
2.815 seconds
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
![s=ut+\frac{1}{2}at^2\\\Rightarrow 1609.34=16.58\times t+\frac{1}{2}\times 0.0105\times t^2\\\Rightarrow \\\Rightarrow 4.905t^2+16.58t-1609.34=0](https://tex.z-dn.net/?f=s%3Dut%2B%5Cfrac%7B1%7D%7B2%7Dat%5E2%5C%5C%5CRightarrow%201609.34%3D16.58%5Ctimes%20t%2B%5Cfrac%7B1%7D%7B2%7D%5Ctimes%200.0105%5Ctimes%20t%5E2%5C%5C%5CRightarrow%20%5C%5C%5CRightarrow%204.905t%5E2%2B16.58t-1609.34%3D0)
![t=\frac{-16.58+\sqrt{308.69254}}{0.0105},\:t=\frac{-16.58-\sqrt{308.69254}}{0.0105}\\\Rightarrow t=94.25, -3252\ s](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B-16.58%2B%5Csqrt%7B308.69254%7D%7D%7B0.0105%7D%2C%5C%3At%3D%5Cfrac%7B-16.58-%5Csqrt%7B308.69254%7D%7D%7B0.0105%7D%5C%5C%5CRightarrow%20t%3D94.25%2C%20-3252%5C%20s)
Time taken with the acceleration is 94.25 seconds
Time = Distance / Speed
![\text{Time}=\frac{1609.34}{16.58}\\\Rightarrow \text{Time}=97.065\ s](https://tex.z-dn.net/?f=%5Ctext%7BTime%7D%3D%5Cfrac%7B1609.34%7D%7B16.58%7D%5C%5C%5CRightarrow%20%5Ctext%7BTime%7D%3D97.065%5C%20s)
Difference in time = 97.065-94.25 = 2.815 seconds
Answer:
1. λ = 0.48 cm = 4800 μm
2. υ = 6.25 x 10¹⁰ Hz
3. E = 4.14 x 10⁻²³ J
Explanation:
1.
Since, the wavelength is defined as the distance between two consecutive or successive crests or troughs. Therefore, in this case the wavelength will be equal to:
Wavelength = λ = Distance between 5 successive crests/5
λ = 2.4 cm/5
<u>λ = 0.48 cm = 4800 μm</u>
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2.
The frequency of photon can be given as:
υ = c/λ
where,
υ = frequency of photon = ?
c = speed of light = 3 x 10⁸ m/s
λ = wavelength = 0.48 cm = 0.0048 m
Therefore,
υ = (3 x 10⁸ m/s)/(0.0048 m)
<u>υ = 6.25 x 10¹⁰ Hz</u>
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3.
Now, the energy of photon is given as:
E = hυ
where,
E = Energy = ?
h = Plank's Constant = 6.626 x 10⁻³⁴ J.s
Therefore,
E = (6.626 x 10⁻³⁴ J.s)(6.25 x 10¹⁰ Hz)
<u>E = 4.14 x 10⁻²³ J</u>