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1 year ago

To determine the focal length of a convex lens, a student focuses a classroom window, a

2 answers:

7 0

If we use the sun as a distant object to calculate the convex lens's focal length, we obtain a number that is more closely related to the actual convex lens value.

We need to learn more about a convex lens's focal length in order to locate the solution.

<h3>Why, if we concentrate the sun, do we obtain a focal length that is closer to the correct value?</h3>

An optical system's focal length is a measurement of how sharply the light converges or diverges.

The distance between the convex lens's pole and its focus is known as its focal length.

Convex lenses focus all of the rays from the distant object at their focal point to create a true image.

We receive a crisper image if the object is farther away from the lens.

Away from the focal point, an image will form if we concentrate on a neighboring window.

To get the focal point on a distant tree, we must move the screen in the direction of the lens.

We can therefore draw the conclusion that if we use the sun as a distant object, we will obtain a value that is closer to the convex lens's actual value.

Learn more about a convex lens's focal length here:

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Fiesta28 [93]1 year ago

6 0

To determine the focal length of a convex lens, if we are using sun as distant object, then we get a value which is closer to the accurate value of convex lens.

To find the answer, we need to know more about the focal length of a convex lens.

<h3>Why we get a focal length which is closer to the accurate value if we focusing sun?</h3>

The focal length of an optical system can be defined as the measure of how sharply it converges or diverges the light.
Focal length of convex lens is the distance between the pole and the focus of the convex lens.
Convex lens converges all the rays coming from the distant object at its focal point to form a real image.
If the object is at more distance from the lens, then we get sharper image.
If we focus on a nearby window, then image will form away from the focal point.
In the case of a distant tree, we need to move the screen towards the lens to get the focal point.

Thus, we can conclude that, the if we are using sun as distant object, then we get a value which is closer to the accurate value of convex lens.

Learn more about the focal length of a convex lens here:

brainly.com/question/28039799

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If the intensity level of one trombone is 70 dB, calculate a reasonable estimate for the intensity level of 76 trombones all pla

kogti [31]

Answer:

β₂ = 88.8 dβ

Explanation:

The intensity of the sound is

β = 10 log (I / I₀)

The sensitivity threshold (I₀) for humans is 1 10⁻¹² W / m²

I = I₀ $10^{\beta /10}$

I = 10⁻¹² 10^{70/10}

I = 1 10⁻⁵ W / m²

The total intensity for the 76 trombones is

I_total = n I

I_total = 76 1 10⁻⁵

I_total = 76 10⁻⁵ W / m²

Let's find the sound level

β₂ = 10 log (76 10⁻⁵ / 10⁻¹²)

β₂ = 88.8 dβ

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3 years ago

Gravity is the force that keeps us on the Earth. It pulls us towards the center of the Earth. If you were to move from the surfa

Nikitich [7]

<h2>Answer: B. Gravitational potential energy </h2>

Explanation:

<em>The gravitational potential energy is the energy that a body or object possesses, due to its position in a gravitational field. </em>

That is why this energy depends on the relative height of an object with respect to some point of reference and associated with the gravitational force.

In the case of the <u>Earth</u>, in which <u>the gravitational field is considered constant</u>, the value of the gravitational potential energy $U_{p}$ will be:

$U_{p}=mgh$

Where $m$ is the mass of the object, $g$ the acceleration due gravity and $h$ the height of the object.

As we can see, the value of $U_{p}$ is directly proportional to the height.

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3 years ago

Human blood consists of blood groups A, B, and O. However, there is one more blood group, AB, which contains alleles A and B in

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The answer is Codominance, AB blood cells inherit both A and B blood types so they are codominance

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3 years ago

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Which of the following statements is true about the scientific process?

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The best and most correct answer among the choices provided by your question is the third choice or letter C.
<span>The statement "Your hypothesis must be testable." is true about the scientific process.

</span>I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

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2 years ago

stephen buys a new moped . he travels 4km south and then 6km east. how far does he need to go to get back where he started??

stiks02 [169]

Answer:

My answer is 7.2 km

Explanation:

When Stephen goes to the south and then to the east, he is drawing a right triangle, where the 4 km and 6 km sides are the cathetus of a right triangle.

Then we use the Pithagorean theorem to solve this problem. We need to find the hypotenuse.

c² = a² + b²

c² = 4² + 6²

c² = 16 + 36

c² = 52

c = 7.2 km

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3 years ago