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3 years ago

What structure is located at the front edge of the retina and has a tooth like appearance?

Physics

1 answer:

pogonyaev3 years ago

3 0

Ora serrate is located at the front edge of the retina and has a tooth like appearance.

Our eye has many portions and parts, all of them are there for some function. The ora serrata is the most anterior extent of the retina or serrated junction between the retina and the ciliary body. The retina ends at the ora serrata, where the ciliary body begins.

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A rope attached to a truck pulls a 180−kg motorcycle at 9.0m/s.The rope exerts a 400−N force on the motorcycle at an angle of 15

steposvetlana [31]

Answer:

115911.09915 J

Unchanged

Decreased

Explanation:

m = Mass of motorcycle = 180 kg

v = Velocity of motorcycle = 9 m/s

F = Force = 400 N

s = Displacement = 300 m

$\theta$ = Angle above the horizontal = 15°

Work done is given by

$W=Fscos\theta\\\Rightarrow W=400\times 300\times cos15\\\Rightarrow W=115911.09915\ J$

The work done is 115911.09915 J

It can be seen that the force applied is constant so it does not matter if the speed of the motorcycle changes.

Tension on the rope would be

$Fcos\theta-T=ma\\\Rightarrow T=Fcos\theta-ma$

Work done

$W=Ts\\\Rightarrow W=(Fcos\theta-ma)s$

So, the work done would be reduced.

7 0

3 years ago

Sequence the steps involved in the working of a doorbell. *

Alenkasestr [34]

Answer:

How doorbell chime works?

A simple chime doorbell uses the magnetic field created by the electromagnet to move a magnetic piston to strike two tone bars. ... When the button is pressed, the circuit closes and the electromagnet moves a contact arm. When the contact arm moves, it interrupts the circuit and the electromagnet stops.

Explanation:

sorry if im wrong

7 0

3 years ago

Ask Your Teacher In Example 24.6, we found that the electric field of a charged disk approaches that of a charged particle for d

Ulleksa [173]

Answer: E = 7394.6N/C

Explanation:

Please find the attached file for the solution

8 0

3 years ago

suppose that you’re running a boy away from your dog who sits and watches you leave if you use the bicycle as a reference frame

solong [7]

Answer:

If you use the bicycle as a reference frame, your dog will appear to be moving backwards farther from you/your bicycle. Although the dog is sitting on one place, your bicycle is moving away from the dog

Explanation:

6 0

3 years ago

The earth travels around the sun once a year in an approximately circular orbit whose radius is 1.50x10^11 m. From this data det

seraphim [82]

(a) Determine the circumference of the Earth through the equation,
C = 2πr
Substituting the known values,
C = 2π(1.50 x 10¹¹ m)
C = 9.424 x 10¹¹ m

Then, divide the answer by time which is given to a year which is equal to 31536000 s.
orbital speed = (9.424 x 10¹¹ m)/31536000 s

orbital speed = 29883.307 m/s

Hence, the orbital speed of the Earth is ~29883.307 m/s.

(b) The mass of the sun is ~1.9891 x 10³⁰ kg.

8 0

4 years ago