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3 years ago

During the compression stroke of an internal combustion engine, _____

Physics

1 answer:

Leona [35]3 years ago

6 0

easy, The fuel is ignited

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I don’t know ask your parents

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2 years ago

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cupoosta [38]

A) 20Newtons is the answer

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3 years ago

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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,

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

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

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

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

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

u = 210 × ( 1 + 212.12 )

u = 44755.45 mm

u = 44.755 m

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4 years ago

George observed a difference in measurements for the same item at different altitudes due to variation in gravity.

AURORKA [14]

George used the spring scale. For example: Using a spring scale on an elevator. As you go either up a floor or down a floor the gravity will change the outcome of the scale's measurements.

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3 years ago

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2 Points<br> What type of electromagnetic radiation is being used in the picture?

frozen [14]

Answer:

Ultraviolet radiation.

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