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Ksju [112]
3 years ago
7

The rock is tied to a string and swung in a circular path by a

Physics
1 answer:
victus00 [196]3 years ago
6 0

Answer:

6.3

Explanation:

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A virtual image produced by a lens is always A. located in front of the lens. B. located in the back of the lens. C. smaller tha
kirza4 [7]
A virtual image is usually located in back of the lens and is smaller than the object.

A few other things to know about virtual images:

virtual image - image that cannot be project on a screen because it is formed by rays that do not converge.

The images that are formed by concave lenses or mirrors are always: virtual, erect and diminished.

hope this helps :)

3 0
3 years ago
Read 2 more answers
Three deer, A, B, and C, are grazing in a field. Deer B is located 63.4 m from deer A at an angle of 52.4 ° north of west. Deer
Naddik [55]

Answer:

The distance between deer A and C is 122 m

Explanation:

Hi there!

For this problem, we can use the law of sines. Please, see the attached figure for a better understanding of the problem.

From the law of sines:

sin β / side BC = sin θ/ side AB = sin α / side AC

The angle β can be calculated (see figure):

β = 180° - 52.4° - 77.3° = 50.3°

Then, we can find the angle θ :

sin β / side BC = sin θ/ side AB

sin 50.3° / 94.8 m = sin θ / 63.4 m

63.4 m · (sin 50.3° / 94.8 m) = sin θ

θ = 31.0°

Now, we can calculate the angle α. The sum of the internal angles of a triangle is 180°. Then:

α = 180° -31.0° - 50.3° = 98.7°

Using the laws of sines:

sin α / side AC = sin θ / side AB

sin 98.7°/ side AC = sin 31.0°/ 63.4 m

side AC = sin 98.7 / ( sin 31.0°/ 63.4 m)

side AC = 122 m

The distance between deer A and C is 122 m

7 0
3 years ago
What is the formula to used to find work?
liubo4ka [24]

Answer:

W = F × D

Explanation:

Hi there! I'm glad I was able to help you!

The formula we use to calculate work is shown below:

W = F × D

W = WORK

F = FORCE

D = DISTANCE

For example, let's say you're holding a box with both of your hands, keeping it still. Sure, holding the box requires some amount of effort, no matter the weight or size, but since you aren't moving the box up and down, no work is being applied.

If you slowly raise the box into the air, however, work is being done on the box. It still requires effort, but you're applying force on the box, raising it x amount of distance into the air.

This is where the variables W, F and D come from.

I hope this helped you! Comment below if I can assist with anything else! :)

7 0
3 years ago
A thermometer reads 25∘C. If the temperature in the room is then increased by 16 K, what temperature will the thermometer read,
LekaFEV [45]

Answer:

-232°C

Explanation:

the initial temperature read by the thermometer is 25°C

the temperature is further increased by 16K

converting 16K to °C

T°K - 273.15 = T°C

16 - 273.15 = -257.1°C

The new temperature on the thermometer would be

25°C -  -257.1°C = -232°C

6 0
3 years ago
Which figure represents the electric field lines of two positive point charges?
Naddik [55]

Electric field lines of positive charges are always radially outwards

So here all field lines must have tendency to move out radially as well as two field lines never intersects with each other

So here field lines also do not intersects with each other

So overall the figure C is perfectly representing the field lines of two positive charges as these lines are not intersecting and also originating from two positive charges.

So answer must be

<u><em>FIGURE C</em></u>

7 0
3 years ago
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