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2 years ago

What variable does each of the symbols in the equation represent?

Physics

1 answer:

taurus [48]2 years ago

4 0

Answer:

Pls give the equation and for what is that equation for?

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Which chemical equation is balanced?

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Explanation:

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2 years ago

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Which of the following depends on an object's displacement not distance from the starting point?

spayn [35]

The answer is A) velocity, because velocity is speed and displacement.
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3 years ago

the electrical resistance of copper wire varies directly with its length and inversely with the square of the diameter of the wi

leonid [27]

Answer:24.47

Explanation:

Given

$L_1=30 m$

$d_1=3 mm$

$R_1=25 \Omega$

$L_2=40 m$

$d_2=3.5 mm$

we know Resistance $R=\frac{\rho L}{A}$

Where R=resistance

$\rho =resistivity$

L=Length

A=area of cross-section

$A=\frac{\pi d^2}{4}$

Thus $R\propto \frac{L}{d^2}$

therefore

$R_1\propto \frac{L_1}{d_1^2}$ --------1

$R_2\propto \frac{L_2}{d_2^2}$ --------2

divide 1 and 2 we get

$\frac{R_1}{R_2}=\frac{L_1}{L_2}\times \frac{d_2^2}{d_1^2}$

$\frac{R_1}{R_2}=\frac{30}{40}\times \frac{3.5^2}{3^2}$

$R_2=25\times 0.734\times 1.33$

$R_2=24.47 \Omega$

8 0

3 years ago

Spaceships A and B are traveling directly toward each other at a speed 0.5c relative to the Earth, and each has a headlight aime

Rainbow [258]

The answer is 2) 1.0c. Light will always propagate through a vacuum at the speed of light “c”; even when moving at a significant fraction of the speed of light, observers will still measure this as the speed of light and the difference is resultant of time dilation.

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2 years ago

In ionic compounds which group from the periodic table usually provide anion?

koban [17]

Pretty sure it’s halogens , or groups 14-17

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3 years ago