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exis [7]
3 years ago
9

Resonance can be used to___ sound

Physics
2 answers:
nika2105 [10]3 years ago
7 0
Hear in a way that's the answer
Arturiano [62]3 years ago
4 0
The answer is amplify.
Please mark me as brainliest. Thanks!!
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In which direction does the electric field point at a position directly north of a positive charge?
navik [9.2K]

Answer:

B. South

Explanation:

An electric field can be defined as the amount of electric force per unit charge. The direction of the electric field can be determined by the motion of a positive test charge under the electric force.

The direction of electric field is radially outward for a positive charge and radially inward for a negative charge. Thus, for the electric field points toward SOUTH at a position directly south of a positive charge.

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3 years ago
A 0.50 mm-wide slit is illuminated by light of wavelength 500 nm.What is the width of the central maximum on a screen 2.0m behin
Novay_Z [31]

Answer:

0.004 m

Explanation:

For light passing through a single slit, the position of the nth-minimum in the diffraction pattern is given by

y=\frac{n\lambda D}{d}

where

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D is the distance of the screen from the slit

d is the width of the slit

Therefore, the width of the central maximum is equal to twice the value of y for n=1 (first minimum):

w=2\frac{\lambda D}{d}

where we have

\lambda=500 nm = 5\cdot 10^{-7}m is the wavelength

D = 2.0 m is the distance of the screen

d=0.50 mm=5\cdot 10^{-4}m is the width of the slit

Substituting, we find

w=2\frac{(5\cdot 10^{-7} m)(2.0 m)}{5\cdot 10^{-4} m}=0.004 m

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