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marta [7]
3 years ago
11

Snell's Law: Light traveling through water comes to a glass surface at an angle of incidence of

Physics
1 answer:
Lerok [7]3 years ago
6 0

Answer:

1. The best definition of refraction is ____.

a. passing through a boundary

b. bouncing off a boundary

c. changing speed at a boundary

d. changing direction when crossing a boundary

 

Answer: D

Bouncing off a boundary (choice b) is reflection. Refraction involves passing through a boundary (choice a) and changing speed (choice c); however, a light ray can exhibit both of these behaviors without undergoing refraction (for instance, if it approaches the boundary along the normal). Refraction of light must involve a change in direction; the path must be altered at the boundary.

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Maksim231197 [3]

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A total resistance of 3.03 Ω is to be produced by connecting an unknown resistance to a 12.18 Ω resistance. (a) What must be the
insens350 [35]

Answer:

(a) 4.0334Ω

(b)parallel

Explanation:

for resistors connected in parallel;

\frac{1}{R_{eq} } =\frac{1}{R1}+\frac{1}{R2}

Req =3.03Ω , R1 =12.18Ω

\frac{1}{3.03 } =\frac{1}{12.18}+\frac{1}{R2}

\frac{1}{R2}=\frac{1}{3.03 }-\frac{1}{12.18}

\frac{1}{R2}=0.2479

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R2=4.0334Ω

(b)parallel connection is suitable for the desired total resistance. series connection can not be used to achieve a lower resistance as the equation for series connection is.

Req = R1+R2

3 0
3 years ago
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zaharov [31]

Divide (25,000) by (the number of miles you can walk in 1 hour).
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4 0
3 years ago
In 'coin on card' experiment a smooth card is used. ​
KIM [24]

Answer:

In coin card experiment smooth card is used so that the card can slide easily from glass

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How does kinetic energy connect or relate to Newtons second law of motion?
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kinetic energy is energy that an object posses while in motion and to get that it must have potential energy.</span>
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