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krok68 [10]
1 year ago
15

our lens manufacturer can only produce lenses with diopter 1d, 2d, 3d, and 4d. if you want to focus incoming parallel light rays

0.2 m behind the last lens, which two lenses should you purchase?
Physics
1 answer:
pochemuha1 year ago
6 0

Two lenses that should be purchased are lenses with the power of 1d and 4d or 2d and 3d.

We need to know about the power of the lens to solve this problem. Lens power can be defined as the ability of the optical device to see. It can be represented by a dioptre unit. The relaxed power formula is

P = 1 / f

where P is the power of the lens in dioptre, and f is the focal length.

From the question above, the given parameter is

f = 0.2 m

By substituting the given parameters, we can calculate the power of the lens

P = 1 / f

P = 1 / 0.2

P = 5d

The total diopter should be 5d.

For more on lens at: brainly.com/question/15445779

#SPJ4

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P = 1000 kg/m3*9.81m/s2*9100m
P = 89271000 Pascals or 89.271 megapascals
3 0
3 years ago
a racing car traveling initially at 8.0 m/s accelerates uniformly at 10.0 m/s^2 for 5 seconds. How far does it travel in this ti
Pepsi [2]

The car travels a distance of

(8.0 m/s) (5 s) + 1/2 (10.0 m/s²) (5 s)² = 165 m

7 0
3 years ago
Two men each weigh 650 N. One man carries +1.0 C of excess charge, the other −1.0 C of excess charge. How far apart must they be
sergejj [24]

Coulomb's law:

F = k×q₁×q₂/r² where k ≈ 9.00×10⁹NC⁻²m²


Given values:

q₁ = +1.0C

q₂ = -1.0C

F = 650N


Substitute the terms in Coulomb's law with our given values. We will have to use the absolute value of q₂ to so the algebra works out. Solve for r:

650 = 9.00×10⁹×1.0×1.0/r²

r = 3721m

Taking significant figures into account:

<h3>r = 3700m</h3>
6 0
3 years ago
Read 2 more answers
Choose the correct definitions of speed, velocity, and acceleration. Check all that apply. Acceleration tells us in which direct
QveST [7]

We have thatThe options that define Speed, Velocity,Acceleration.

  • Speed is used to describe how fast the object is moving.
  • Acceleration is the rate of change of velocity in time.
  • Velocity is used to describe how fast the object is moving and tells us in which direction it is going.

Options

B,D,E

From the question we are told

Choose the correct definitions of speed, velocity, and acceleration. Check all that apply.

  • Acceleration tells us in which direction the object is going. Speed is the rate of change of velocity in time.
  • Acceleration is the rate of change of velocity in time.
  • Velocity is used to describe changes in the movement direction of the object. Acceleration tells us how far the object will go in a certain amount of time.
  • Velocity is used to describe how fast the object is moving and tells us in which direction it is going.
  • Speed is used to describe how fast the object is moving.
  • Velocity is the rate of change of speed in time.

Speed is used to describe how fast the object is moving and tells us in which direction it is going.

Generally

  • Acceleration is the rate of change of velocity in time.
  • Velocity is used to describe how fast the object is moving and tells us in which direction it is going.
  • Speed is used to describe how fast the object is moving without its direction in consideration

Hence

The options that define Speed, Velocity,Acceleration.

  • Speed is used to describe how fast the object is moving.
  • Acceleration is the rate of change of velocity in time.
  • Velocity is used to describe how fast the object is moving and tells us in which direction it is going.

Options

B,D,E

For more information on this visit

brainly.com/question/23379286

3 0
3 years ago
Help me please on this
Norma-Jean [14]
So what u do is 2112393921010
6 0
2 years ago
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