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3 years ago

Which option is an example of reflection?

Physics

2 answers:

OverLord2011 [107]3 years ago

7 0

Its d- light shining through a window

katovenus [111]3 years ago

6 0

Answer:

Explanation:

sound waves hit the canyon walls, then bounce back towards you. That's why you hear an echo

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What do you understand by 'weightlessness due to freefall'?

Daniel [21]

Answer:

Weightlessness is simply a sensation experienced by an individual when there are no external objects touching one's body and exerting a push or pull upon it.

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3 years ago

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Which one is a element??

MaRussiya [10]

Answer:

A.) Carbon

Explanation:

Carbon is an element on the periodic table.

it has the symbol C, and is found in almost every single thing!

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3 years ago

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Three identical very dense masses of 7500 kg each are placed on the x axis. One mass is at x1 = -100 cm , one is at the origin,

sukhopar [10]

Answer:

0.00354 (N)

Explanation:

Convert to metric system:

$x_1 = -100 cm = 1 m$

$x_2 = 420 cm = 4.2 m$

Formula for gravitational force:

$F_g = G\frac{mM}{s^2}$

where s is the distance between 2 bodies masses m and M

Substitute the number to the formula above and since the 2 forces are acting in opposite direction, the total net gravitational force on the mass of origin be:

$F_g = F_{g1} - F_{g2}$

$F_g = G\frac{m_1M}{x_1^2} - G\frac{m_2M}{x_2^2}$

$F_g = GM(\frac{m_1}{x_1^2} - \frac{m_2}{x_2^2})$

$F_g = 6.67*10^{-11} * 7500 (\frac{7500}{1^2} - \frac{7500}{4.2^2})$

$F_g = 5*10^{-7}(7500 - 425.17)$

$F_g = 5*10^{-7} * 7074.83$

$F_g = 0.00354 (N)$

5 0

3 years ago

1. What would be the force of attraction between any two bodies are made double and distance between them from their center is h

Anarel [89]

Please find attached photograph for your answer. Answer is c. 16 times. Do comment if you have any query. Don't forget to mark me Brainliest if you like my answer

3 0

3 years ago

Four identical 2.5 mF capacitors are connected together electrically. What is the greatest possible capacitance of the combinati

MrRa [10]

When capacitors are in PARALLEL, they add up. (like resistors in series)

If you connect these four capacitors in parallel, the combination behaves like a single capacitor of (4 x 2.5) = 10 mF.

That's the greatest capacitance you can make with these four pieces.

7 0

3 years ago