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Gnesinka [82]
3 years ago
5

Describe the shape of a convex lens and explain what it does to light.

Physics
1 answer:
alexira [117]3 years ago
4 0
Convex lenses are thicker at the centers than the edges, they are known as the converging lenses. Rays of light that pass through the lens are brought closer together (they converge). When rays of light that are parallel pass through a convex lens they are refracted, the refracted rays converge at one point called the principal focus. 
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Which of the following gases are the heaviest? <br> O2, CH4, CO2, Cl2
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the answer is

CI2 because its 70.


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A student says that a speed of 50 m/s is faster than a speed of 140 km/h because the number is bigger. What would you say to the
ladessa [460]

The units are not consistent - 1 m/s is not the same as 1 km/h.

First thing to do would be to convert from one unit of speed to the other, say km/h to m/s. There are 1000 meters (m) for every kilometer (km) and 3600 seconds (s) for every hour (h), so

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A person is standing on and facing the front of a stationary skateboard while holding a construction brick. The mass of the pers
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Answer:

    v₁ = -0.8087 m / s

Explanation:

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Initial instant. When they are united

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Final moment. After throwing the brick

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the moment is preserved

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        v₁ = -  \frac{ m_{brick}   }{m_{man} + m_{skate}   }  v_{2}

the negative sign indicates that the two speeds are in the opposite direction

let's calculate

        v₁ = - \frac{2.5}{67 + 4.10}  23.0

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