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Anna [14]
4 years ago
15

Light from a distant star is collected by a concave mirror that has a radius of curvature of 150 cm. How far from the mirror is

the image of the star?
Physics
1 answer:
andrey2020 [161]4 years ago
4 0
The focal point of a mirror is half of the radius of curvature. We can use the formula,                                                                                                                   1/f = 1/v + 1/u                                                                                                          where f is the focal length , v is the image distance and u is object distance        The distance of the star is assumed to be incredibly far away and 1 divided by a really big number is approximately zero, thus;                                                     1/f = 1/v  = 1/75 = 1/v                                                                                             therefore; the image is formed 75 cm infront of the mirror
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If you walk a distance of 8 blocks and then 3 blocks south from home, what is your position compared to home? What distance did
Harman [31]

The position compared to that of home is a reference to displacement, I believe.

Displacement = x total - x initial

So I believe the answer is 5 blocks due north (if you’re walking linearly from your home), unless the questions is referring to relative displacement, in which then you’d need to use the Pythagorean theorem to find the hypotenuse between both positions. And then you’d have to find theta for the degrees between the south direction and the other unmentioned direction. But I don’t think that’s the case.

Distance refers to x total and doesn’t care for direction, as this refers to a scalar quantity opposed to a vector. Thus the equation is just

d = x

So 8 blocks + 3 blocks = a distance of eleven blocks walked total

7 0
3 years ago
a 4050 N sled is being pushed with a force of 575 N. If it encounters a frictional force of 385 N… determine the net force
creativ13 [48]

According to the solving the net force is:

= 3,860.

<h3>Why is net force important?</h3>

The net force is the total of all the forces operating on an object, according to its definition. Mass can be accelerated by net force. Whether a body is at rest or in motion, another force is at work on it. When a system has a lot of forces acting on it, the phrase "net force" is employed.

<h3>What's the net force equation?</h3>

When a body is moving and multiple forces, such as the normal force, frictional force, and gravitational force, are acting on it, the combined effect is known as net force. As a result, is the net force formula. FNet equals Fa, Fg, Ff, and FN.

<h3>According to the given data:</h3>

4050 N sled

force of 575 N.

encounters a frictional force of 385 N

So the net force will be:

(Net)F = F₁ + F₂ + F₃

So,

(Net)F = F₁ + F₂ - F₃(frictional force)

(Net)F = 4050 + 385 - 575

= 3,860

According to the solving the net force is:

= 3,860.

To know more about net force visit:

brainly.com/question/18109210

#SPJ10

8 0
1 year ago
Oooooooooooooooooooooooo
MaRussiya [10]
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8 0
3 years ago
Read 2 more answers
A 0.08 kg bullet traveling at speed hits a 16.1 kg block of wood and stays in the wood. The block with the bullet imbedded in it
zimovet [89]

Answer:

1638.225ms-1

Explanation:

Mass of block= 16.1 Kg

Mass of bullet = 0.08Kg

Initial velocity of block= 0ms-1

Initial velocity of bullet= ????

Final velocity of bullet and wood= 8.1 ms-1

From Newton's third law:

Momentum before collision= momentum after collision

MAUA + MAUB= V(MA +MB)

(0.08×UA) + (16.×0)= 8.1(0.08+16.1)

0.08UA= 131.058

UA= 1638.225ms-1

6 0
3 years ago
A sample of water in equilibrium with its vapor in a closed 0.6-L container has a vapor pressure of 23.8 torr at 25°C. The conta
Lyrx [107]

Answer:

Explanation:

Given data:

vapor pressure P_1 = 0.6 L

Volume = 2L

Temperature remain constant

No change in vapor pressure. This is because vapor pressure is calculated from the temperature of the liquid and not the volume of the container. Since the temperature is constant therefore vapor pressure remian constant..

8 0
3 years ago
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