PLEASE ASSIST 20 POINTS

What type of lens does a camera contain?

Savatey [412]

A camera lens (also known as photographic lens or photographic objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically.

7 0

3 years ago

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A man walks 7 km East in 2 hours and then 2.5 km West in 1 hour. What is

madam [21]

<h2><u>How</u><u> </u><u>to</u><u> </u><u>solve</u><u>?</u></h2>

We know that, Velocity is the rate of displacement covered. Displacement is the shortest path between the Initial and Final point covered by the body. So,

Velocity = Displacement / Time

And, when it comes to Average velocity, It is the total displacement by total time taken. So, By using this let's solve this question.....

<h2><u>Solution</u><u>:</u></h2>

✏️ Refer to the attachment...

Let the body goes to point A that is 7 m East of the Initial point. Then it comes backward because West is opposite to East in perpendicular direction. It covers 1.5 m backwards in the same line to reach B which is the Final point.

So,

Displacement = Final point - Initial point

⇛ Displacement = 7 m - 1.5 m

⇛ Displacement = 5.5 m

Total time taken,

⇛ 2 hours + 1 hour

⇛ 3 hours

Finding Average displacement,

⇛ Total displacement / Total time taken

⇛ 5.5 m / 3 hours

⇛ 1.83333.... hours

So, the Final answer is,

$\huge{ \boxed{ \bold{ \purple{1.8 \bar{3}m}}}}$

<u>━━━━━━━━━━━━━━━━━━━━</u>

6 0

3 years ago

As a consultant to the soft-drink industry, Dr. J is given the task of conducting the ultimate Pepsi taste test. This is Dr. J's

dem82 [27]

Answer:

A) How much work does the Pepsi do on the bullet = 0.0625J

B) At what velocity does the Pepsi hit the floor = 7.67m/s

Explanation:

Given mass of bullet = 5g

initial velocity = 500 m/sec

final velocity = 5 m/sec

From work done = Force X Distance

WD = Mad

a = v - u /t

Workdone ; m(v - u )/t

A) The work done by the Pepsi is equal to the change in kinetic energy while in the Pepsi:

but The work done by the container wall on the bullet is equal to the change in kinetic energy on either side of the wall: W = change in kinetic energy = 1/2 mv²

= 1/2 X 0.005 x 500² - 1/2 X 0.055 x 5²

= 624.94J

Therefore ; The work done by the Pepsi is equal to the change in kinetic energy while in the Pepsi = W = change in KE = 0.0625 - 0 = 0.0625J

B) At what velocity does the Pepsi hit the floor?

From conservation of energy principle; PE = KE

mgh = 1/2mv²

0.98 X 3 = 1/2v²

velocity = 7.67m/s

3 0

3 years ago

A source of emf is connected by wires to a resistor and electrons flow in the circuit the wire diameter is teh same throughout t

vladimir2022 [97]

I think is E
I hope that helps

3 0

3 years ago

Anyone please help me I need help please guys PTS 1000

wel

Answer:

it was helpful to you dear

3 0

3 years ago

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