3 years ago

Will give correct answer brainliest

Physics

1 answer:

garri49 [273]3 years ago

5 0

Answer:

Explanation:

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A block with mass M = 3 kg is moving on a flat surface with constant speed v1 =

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Answer:

this makes no since so i cant help you here sorry

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2 years ago

Remember KE=M*V2/2…  A model airplane moves twice as fast as another identical model airplane. Compared with the kinetic energy

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Answer: 4 times as much

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(11) The speed of radio waves is 300 000 000 m/s.

Neko [114]

Answer:

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Explanation:

Given the following data;

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3 years ago

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3 years ago

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a certain projetor uses a concave mirror for projecting an object's image on a screen .it produces on image that is 4 times bigg

IrinaK [193]

Answer:

f = 1 m

Explanation:

The magnification of the lens is given by the formula:

$M = \frac{q}{p}$

where,

M = Magnification = 4

q = image distance = 5 m

p = object distance = ?

Therefore,

$4 = \frac{5\ m}{p}\\\\p = \frac{5\ m}{4}\\\\p = 1.25\ m$

Now using thin lens formula:

$\frac{1}{f}=\frac{1}{p}+\frac{1}{q}\\\\\frac{1}{f} = \frac{1}{1.25\ m}+\frac{1}{5\ m}\\\\\frac{1}{f} = 1\ m^{-1}\\\\$

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3 years ago