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Gemiola [76]
3 years ago
13

Which particles are heavy and which are light

Physics
2 answers:
VashaNatasha [74]3 years ago
3 0

Answer:

Protons and neutrons are heavy, Electrons are extremely light

Explanation:

Protons and neutrons are heavier than electrons and reside in the nucleus at the center of the atom. Electrons are extremely lightweight and exist in a cloud orbiting the nucleus.

aleksklad [387]3 years ago
3 0
Protons- heavy
Electrons- light
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A movie star catches a paparazzi reporter snapping pictures of her at home and claims that he was trespassing. He, of course den
guajiro [1.7K]

Answer:

44.755 m

Explanation:

Given:

Height of the movie star, H = 1.75 m = 1750 mm

Height of the image, h = - 8.25 mm

Focal length of the camera = 210 mm

Let the distance of the object i.e the distance between camera and the movie star be 'u'

and

distance between the camera focus and image be 'v'

thus,

magnification, m = \frac{\textup{h}}{\textup{H}}

also,

m = \frac{\textup{-v}}{\textup{u}}

thus,

\frac{\textup{-v}}{\textup{u}}=\frac{\textup{h}}{\textup{H}}

or

\frac{\textup{-v}}{\textup{u}}=\frac{\textup{-8.25}}{\textup{1750}}

or

\frac{\textup{1}}{\textup{v}}=-\frac{\textup{1750}}{\textup{-8.25}}\times\frac{1}{\textup{u}}  ....................(1)

now, from the lens formula

\frac{\textup{1}}{\textup{f}}=\frac{\textup{1}}{\textup{u}}+\frac{1}{\textup{v}}

on substituting value from (1)

\frac{\textup{1}}{\textup{210}}=\frac{\textup{1}}{\textup{u}}+-\frac{\textup{1750}}{\textup{-8.25}}\times\frac{1}{\textup{u}}

or

\frac{\textup{1}}{\textup{210}}=\frac{\textup{1}}{\textup{u}}(1 -\frac{\textup{1750}}{\textup{-8.25}})

or

u = 210 × ( 1 + 212.12 )

or

u = 44755.45 mm

or

u = 44.755 m

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