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Sholpan [36]
3 years ago
5

Which statement correctly compares ultraviolet light or visible light? (A)Ultraviolet light has both shorter wavelengths and low

er radiant energy than visible light.
(B) Ultraviolet light has Both a higher frequency and a higher radiant energy than visible.
(C) Ultraviolet light has Both a higher frequency and longer wavelengths than visible light.
(D) Ultraviolet light has Both a lower frequency and longer wavelengths than visible light.
Physics
2 answers:
frozen [14]3 years ago
8 0

D is the correct answr my man

11Alexandr11 [23.1K]3 years ago
6 0

Answer:

d is correct

Explanation:

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Find the value of T1 if 1 = 30°, 2 = 60°, and the weight of the object is 139.3 newtons.
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Answer:

Option A (69.56 newtons) is the appropriate solution.

Explanation:

According to the question,

On the X-axis,

⇒ T_1Cos30^{\circ}-T_2Cos60^{\circ}=0

or,

    T_1Cos 30^{\circ}=T_2Cos60^{\circ}

On substituting the values, we get

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On the Y-axis,

⇒ T_1Sin30^{\circ}+T_2Sin60^{\circ}=139.3 \ N

                        \frac{T_1}{2} +\frac{\sqrt{3} }{2} =139.2 \ N

                    T_1+\sqrt{3}T_2=139.2\times 2

From equation 1, we get

           T_1+\sqrt{3}\times \sqrt{3}T_1 =278.4 \ N

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