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Feliz [49]
3 years ago
5

A double concave lens is a ________ lens, and a double convex lens is a ______ lens.

Physics
1 answer:
forsale [732]3 years ago
4 0

Answer:

b. diverging, converging

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saw5 [17]

The potential energy of the block is A) 490 J

Explanation:

The potential energy of an object is the energy possessed by the object due to its position in the gravitational field.

It is calculated as follows:

PE=mgh

where

m is the mass of the object

g is the acceleration due to gravity

h is the height of the object above the ground

For the block in this problem, we have:

m = 10 kg

g=9.8 m/s^2

h = 5 m

Therefore, its potential energy is:

PE=(10)(9.8)(5)=490 J

Learn more about potential energy:

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