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3 years ago

If an object emits or reflects light,

Physics

2 answers:

egoroff_w [7]3 years ago

6 0

The object when emits or reflects the light, it is seen by the eye.

Answer: Option D

Explanation:

The reflection of light is the only image that our eyes perceive and the brain recognizes it as the visual of the object. The incident ray from the light source falls on the object and that is reflected to the lens of our eye which creates an image in the eye.

The object either emits the rays or even reflect the light rays, which strikes the lens of our eye, making the object seen.

SIZIF [17.4K]3 years ago

4 0

D. It can be seen by the eye. I took this test. Hope this helped!

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What is the wavelength of red light in vacuum that has a frequency of 4.00 × 1014 hz?

Pachacha [2.7K]

Answer: $7.5(10)^{-7} m$

Explanation:

The frequency $\nu$ of an electromagnetic wave is given by the following equation:

$\nu=\frac{c}{\lambda}$

Where:

$c=3(10)^{8} m/s$ is the speed of light in vacuum

$\nu=4(10)^{14} Hz$ is the frequency of red light

$\lambda$ is the wavelength of red light

Isolating $\lambda$ :

$\lambda=\frac{c}{\nu}$

$\lambda=\frac{3(10)^{8} m/s}{4(10)^{14} Hz}$

Finally:

$\lambda=7.5(10)^{-7} m$

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4 years ago

What is 25 degrees Celsius equal to in Fahrenheit? I need to know how to do it to, so give me a formula, and it would help if yo

andreev551 [17]

C= 5/9*(F - 32) so F=C*9/5 + 32

F= 25*9/5 +32 = 77 Fahrenheit

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3 years ago

Three rocks with masses of 1 kg, 5 kg, and 10 kg fall from the same height.

Naily [24]

Answer:
The 10 kg rock has more inertia than the other two rocks.

Explanation

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3 years ago

Read 2 more answers

How many atoms of hydrogen are there in one molecule of ammonium phosphate, if the chemical formula is (NH4)3PO4?

joja [24]

Answer:

The answer is D.

Explanation:

There are 12 atoms of H present in ammonium phosphate (NH4)3PO4.

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3 years ago

Two objects, each with a charge of +0.15 C are separated by a distance of 3 meters.

Mrac [35]

Answer:

A . Are the masses repelling or attracting

answer:

So, positive energy densities ("masses") attract each other by gravitational interaction. This is the general idea.

B. What is the magnitude of the electrical force between the objects?

answer:

 The magnitude of the electrostatic force F between two point charges q1 and q2 is directly proportional to the product of the magnitudes of charges and inversely proportional to the square of the distance between them.

C. What would the magnitude of the force be if one of the charges was 1/3 the amount?

answer:

0.45

D. ) What would the force be if the distance between the charges was only 1 meter (with the original charges)?

answer;

Fmin=2.3×10^−28N

E: What would the force be if one of the charges was 1/3 the amount AND the distance was 1 meter?

answer;

Electrostatic force is directly related to the charge of each object. So if the charge of one object is doubled, then the force will become two times greater.

#CARRYONLEARNING:)

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3 years ago