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Contact [7]
3 years ago
14

What is the focal length of a lens

Physics
1 answer:
goldenfox [79]3 years ago
4 0

Answer:

The focal length of a lens is refers to the distance from the center of the lens to the principal foci.

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An electric current through neon gas produces several distinct wavelengths of visible light. What are the wavelengths (in nm) of
MA_775_DIABLO [31]

Answer:

Explanation:

If a be grating element

a = 1 x 10⁻² / 11000

= .0909 x 10⁻⁵

= 909 x 10⁻⁹ m

for first order maxima , the condition is

a sinθ = λ where λ is wavelength

909 x 10⁻⁹ sin 49.67 = λ₁

λ₁ = 692.95  nm .

λ₂ = 909 x 10⁻⁹ sin 50.65

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λ₃ = 909 x 10⁻⁹ sin 52.06

= 716.88 nm

λ₄ = 909 x 10⁻⁹ sin 52.89

= 724.90 nm

692.95  nm ,  702.91 nm  , 716.88 nm , 724.90 nm .

4 0
3 years ago
A battery establishes a voltage V on a parallel-plate capacitor. After the battery is disconnected, the distance between the pla
disa [49]

Answer:

d.

Explanation:

Since, the capacitance( decreases )

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Hence, option d is correct.

C =εA/d.

d is doubled, therefore  C decrease ( inverse relation).

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3 years ago
If we throw a tennis ball and a bowling ball, would the bowling ball require more or less force than the tennis ball to reach th
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The bowling ball would need less because it has more of a Gravitational pull to the ground than the tennis ball does. The letters represent force = mass and acceleration. I hope this helps ✨✨
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3 years ago
Heat is added to a substance, but its temperature does not rise. Which one of the following statements provides the best explana
GalinKa [24]

Answer:

Heat is added to a substance, but its temperature does not rise. Which one of the following statements provides the best explanation for this observation? the substance must be a gas. the substance must be a non-perfect solid. the substance undergoes a change of phase. the substance has unusual thermal properties. the substance must be cooler than its environment.

7 0
3 years ago
Read 2 more answers
Assuming things about someone based on your experiences with similar people you have encountered is called
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presumptuous

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it's what you call someone who assumes something

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3 years ago
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