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3 years ago

Starting friction is the force caused by tiny bonds forming between two surfaces.

Physics

1 answer:

just olya [345]3 years ago

4 0

True because the length along a path between two points of friction forces that resists motion.

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Colonist who belived in complete

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Natural right

Explanation:

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3 years ago

Which statement about speed and/or velocity is true?

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Answer: The right Answer is Velocity has both speed and direction.

Explanation:

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2 years ago

Read 2 more answers

A silver wire 2.6 mm in diameter transfers a charge of 420 C in 80 min. Silver contains 5.8 x 10- free electrons per cubic meter

kifflom [539]

Answer:

a). 87.5 mA or $87.5 x10^{-3}$ A

b). 1.78 $\frac{m}{s}$

Explanation:

$d=2.6 mm \\Q=420C\\t=80min\\n=5.8x10^{28} \\q=1.6x10^{-19}$

n the number of free electrons is 28 in text reference and if they don't give q is take as the charge of electron.

a).

$I=\frac{Q}{t}\\ I= \frac{420 C}{80 min}*\frac{1min}{60 s} =\frac{420 C}{4800s}\\ I=87.5 x10^{-3}$ A

b).

$I=n*abs (q)*V_{d}*A$

$A= \pi * (\frac{d}{2})^{2} \\A=\pi (*\frac{2.6x10^{-3} m}{2})^{2} \\A=5.309x10^{-6}$

$V_{d} =\frac{I}{n*abs(q)*A} \\V_{d}=\frac{87.5 x10^{-2} }{5.8x^10{28} *1.6x^{-19} *5.3x^{6} }\\V_{d}=1.78 \frac{m}{s}$

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2 years ago

Dose aloe Vera grow in the mesa?

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there are diffrent species of aloe vera so there is

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2 years ago

Compare and contrast between reflection and refraction

Tcecarenko [31]

Differences:

Reflection is described as the reverting back of light or sound waves in the same medium, when it falls on plane.

Refraction means the shift in direction of the radio waves, when it enters medium with different density.

Comparisons:

Reflection and refraction both change the direction of light and both do not absorb light. All light waves can be reflected and refracted.

Both Reflection and Refraction are phenomenon related with wave motion of sound, and electromagnetic waves, thus including light.

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2 years ago