Answer:
maybe c. because if you do 70
Explanation:
-50 you get 20 than you add that to the 25 and you get 45 and the nearest closest number is 47
Measure the distance between an object and the lens after using the lens to focus on it. The focal length is at this range.
<h3>How simple is it to determine a lens's focal length?</h3>
Focus a far-off object on a wall by adjusting the convex lens up and down along the scale. The picture that forms on the wall is very close to the lens' focus, and the metre scale can be used to read how far away the lens is from the image. This approximates the lens's focal length.
<h3>How do you calculate a concave lens's focal length?</h3>
The formula f=uv/u-v is used to get the focal length of the concave lens using the values of u and v.
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Answer:
85 Kg
314.041 N
Explanation:
We are given that
Mass of body on earth=85 kg
Acceleration due to gravity on earth=
Weight of body on earth=830 N
We have to find the mas of body and weight of body on Mars.
We know that mass of an object does not change with location .
It remain same everywhere.
Mass of body on Mars=85 kg
Gravitational acceleration on the surface of Mars=
We know that
Weight =
Using this formula
Weight of body=
Hence, the weight of body on Mars=314.041 N
Answer:
Meteorite
Explanation:
A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originated in outer space and survived its passage through the atmosphere to reach the surface of earth.