Answer:
The diaphragm.
Explanation:
A diaphragm is a thin non transparent structure with an aperture at its center. Aperture is the opening in a lens through which light passes to enter the camera. Diaphragm controls the passage of light through specimen. It stops the passage of light except for the light passing through aperture. It also limits the brightness of light reaching the focal plane.
The diaphragm is placed close to the lens, where objects are defocused to the maximum in order to pass every ray from the object through the lens. Diaphragm discards some of those rays but allows multiple rays to move through to produce an image. This means that the size of the aperture controls the amount of light that passes through the lens. The center of the aperture coincides with optical axis of the lens. Iris diaphragm is an example. It is used in modern cameras.
Answer:
1.0E46 grams in galaxy
1.0E36 mass
1.0E12 stars - dividing equations - or 1000 billion stars
1.the sun must be lined up with the moon and earth all must be aligned for this to happen
Answer:
<em>The speed of the car is 18.75 m/s</em>
Explanation:
<em>Impulse-Momentum Change Equation</em>
The impulse received by an object is equal to the change in momentum:
Impulse = Change in momentum
The change in momentum is:
Where m is the mass of the object, v2 is the final speed, and v1 is the initial speed. This means the impulse J is:
It's given an m=1,600 kg car is moving at v1=25 m/s North and then an impulse of J=-10,000 N.s is applied South. The minus sign indicates the impulse is opposite to the original direction of the velocity.
Solving for v2:
Substituting:
The speed of the car is 18.75 m/s
Answer:
Examples of Synthetic Materials – Examples of synthetic materials include synthetic fibers, ceramics, polymers, artificial foods and medicines, and composites. Synthetic fibers are flexible. They can be used to make clothing and other objects. Some examples of synthetic fibers are rayon, polyester, and nylon.
Explanation:
Close enough eh :l
