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Vadim26 [7]
3 years ago
9

2. Fill in the blanks

Physics
1 answer:
slamgirl [31]3 years ago
4 0

Answer:

a. Two bodies are rubbed against each other they acquire equal and Opposite charge.

b. Electron are transferred from one object to another when two objects are charged by  friction.

c. Lightening rod is a device used to secure tall buildings from the effect of lightning

d. Negative charge is obtained by plastic comb when rubbed with dry hair.

e. Lightning is natural spark discharge on huge scale.

Hope this helps you. Do mark me as brainliest.

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siniylev [52]

Answer:

a

Explanation:

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3 years ago
Two narrow, parallel slits separated by 0.850 mm are illuminated by 600-nm light, and the viewing screen is 2.80 m away from the
CaHeK987 [17]

Answer:

a) 7.947 radians

b) \mathbf{\frac{I}{I_{max}}=0.4535}

Explanation:

y = Distance from central bright fringe = 2.5 mm

λ = Wavelength = 600 nm

L = Distance between screen and source = 2.8 m

d = Slit distance = 0.85 mm

tan\theta =\frac{y}{L}\\\Rightarrow tan\theta =\frac{2.5}{2800}=0.000892\\\Rightarrow \theta=tan^{-1}0.000892=0.05115^{\circ}

\Delta r= dsin\theta\Rightarrow \Delta r=dsin0.05115=7.589\times10^{-7}

a) Phase difference

\phi=\frac{2\pi}{\lambda}\Delta r\\\Rightarrow \phi=\frac{2\pi}{600\times 10^{-9}}7.589\times10^{-7}=7.947\ rad

∴ Phase difference between the two interfering waves on a screen at a point 2.50 mm from the central bright fringe is 7.947 radians

b) \frac{I}{I_{max}}=cos^2\frac{\phi}{2}\\\Rightarrow \frac{I}{I_{max}}=cos^2\frac{7.947}{2}\\\Rightarrow \mathbf{\frac{I}{I_{max}}=0.4535}

∴ Ratio of the intensity at this point to the intensity at the center of a bright fringe \mathbf{\frac{I}{I_{max}}=0.4535}

8 0
3 years ago
Is direction the length of the route between two points ?
zepelin [54]

Answer:

No distance is the length between two routes

Explanation:

Distance is the length of the route between two points. ... Direction is just as important as distance in describing motion. A vector is a quantity that has both size and direction. It can be used to represent the distance and direction of motion.

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kenneth warmed up a 100- ml sample of air in and expandable container. he displayed the resluts in the following graph. the resl
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Traveling in a circle requires a net force
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I don’t think I understand the question but true?
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