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4 years ago

Which term refers to the phenomenon of light shining on a metal and causing electrons to break free from their atoms?

Physics

2 answers:

LenKa [72]4 years ago

6 0

D. Photoelectric Effect

netineya [11]4 years ago

4 0

Photoelectric effect.

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Suppose that the speed of yellow visible light in a certain transparent medium is 2.01* 105 km/s. What, approximately, is the in

True [87]

Answer:

$1.50$

Explanation:

Index of refraction:

$n=\frac{c}{v}$ where $n$ is the refractive index, $c$ is the speed of light in vacuum and $v$ is the speed of light in medium.

The speed of light in vacuum is $3.00 \times 10^5 \text{km/s}$

Speed of light in medium is $2.01 \times 10^5 \text{km/s}$

Thus,

$n=\frac{3.00\times 10^5}{2.01\times 10^5}$

$n=1.50$

Index of refraction of this substance through yellow light is $1.50$

4 0

3 years ago

Acceleration of a Car A car traveling along a straight road at accelerated to a speed of over a distance of ft. What was the acc

kicyunya [14]

Answer:

how many feet?

Explanation:

6 0

3 years ago

Why is the milky way galaxy not expanding together with the rest of the universe?

tamaranim1 [39]

Because it on by it's self floating around not forming part of something

8 0

4 years ago

A massless string connects a 1.00 kg mass to a 3.00 kg cart which is resting on a frictionless horizontal surface. The mass hang

Romashka-Z-Leto [24]

Both masses will have the same acceleration. The cart accelerates to the right with a magnitude of 4.9 m/ $s^{2}$ . The correct answer is 4.90 m/ $s^{2}$

Given that a massless string connects a 1.00 kg mass to a 3.00 kg cart which is resting on a frictionless horizontal surface.

Let M = 1kg and m = 3 kg

Since the horizontal surface is frictionless, the tension in the string will be the same. when the mass is hanged over a frictionless pulley, the tension will also be the same.

When the mass is released, the cart accelerates to the right can be calculated from Newton' second law of motion. That is,

M( g + a) = m(g - a)

1(9.8 + a) = 3( 9.8 - a)

9.8 +a = 29.4 - 3a

collect the like terms

4a = 19.6

a = 19.6/4

a = 4.9 m/ $s^{2}$

Therefore, the cart accelerates to the right with a magnitude of 4.9 m/ $s^{2}$ . The correct answer is 4.90 m/ $s^{2}$

Learn more about dynamics here: brainly.com/question/24994188

5 0

3 years ago