A concave lens can only form a. A. real image. B. reversed image. C. virtual image. D. magnified image.
1 answer:
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Answer:
1) Mass of the grain is .
2) 0.08901 kg of sand would have surface area equal the surface area of the cube.
Explanation:
1) Radius of the grain,r = 64.8 µm =
Volume of the sphere =
Volume of the grain of a sand:
Density of a grain of sand =
Mass of a grain of a sand = M
Mass of the grain is .
2) Surface are of sphere:
Surface area of a grain:
Length of the cube = a = 0.514 m
Total surface area of cube ,A'=
let the number grains with area equal to total surface area of cube be x.
Volume of x number of grains :V'
Mass of of sandL:
=
0.08901 kg of sand would have surface area equal the surface area of the cube.