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3 years ago

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When experimenting with the photoelectric effect, what factor of light affected the kinetic energy of the electrons emitted from

metal?
a)Amplitude of light.
b)Frequency of light.
c)Intensity of light.
d)The amount of time it was exposed to light.

1 answer:

Shtirlitz [24]3 years ago

5 0

Answer:

c

Explanation:

intensity of light in the

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The diagram below shows the movement of matter in a portion of the water cycle.

Alisiya [41]

Answer:

d) precipitation

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And if you want to, pls mark it as the brainliest answer

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3 years ago

A 10 m long glider with a mass of 680 kg (including the passengers) is gliding horizontally through the air at 30 m/s when a 68

timama [110]

Answer:

v = 30.39 m/s

Explanation:

given,

mass of glider,M = 680 Kg

mass of the skydiver, m = 68 Kg

horizontal velocity,V = 30 m/s

when skydiver releases, velocity,v = 30 m/s

velocity if the glider,v' = ?

use the conservation of momentum

M V = m' v' + m v

m' = 680-68 = 612 Kg

680 x 30 = 612 x v + 60 x 30

612 v = 18600

v = 30.39 m/s

since the skydiver's speed will be the same as before release

The glider should continue to travel at 30.39 m/s since there are no external forces acting on it

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3 years ago

Mutations are always harmful. <br> true or false

masha68 [24]

Answer:

false

Explanation:

some can be harmful but not all

5 0

3 years ago

Read 2 more answers

The inclined plane in the figure above has two sections of equal length and different roughness. The dashed line shows where sec

saveliy_v [14]

The static friction exerted on the block by the incline is $\mu _ s _1 Mgcos \ \theta$ .

The given parameters;

<em>mass of the block, = M</em>
<em>coefficient of static friction in section 1, = </em> $\mu_s_1$ <em />
<em>angle of inclination of the plane, = θ</em>

<em />

The normal force on the block is calculated as follows;

Fₙ = Mgcosθ

The static friction exerted on the block by the incline is calculated as follows;

$F_s = \mu_s F_n\\\\F_s = \mu _s_1(Mg cos\ \theta)\\\\F_s = \mu _s_1 Mgcos\ \theta$

Thus, the static friction exerted on the block by the incline is $\mu _ s _1 Mgcos \ \theta$

Learn more here:brainly.com/question/17237604

3 0

3 years ago

A boy starts from point A and walks 3 meters toward the south, then turns around and walks 7 meters toward the north. What is th

jolli1 [7]

Answer:

-3m+7m = 4m

Explanation:

As he walks south, he is going down 3m (-3m). Then he walks up 7m (+7m).

You subtract the final position from the initial position to get displacement.

7m - 3m = 4m

7 0

3 years ago