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WITCHER [35]
3 years ago
8

Which quantity below is a derived quantity?

Physics
2 answers:
andrew11 [14]3 years ago
7 0
C.) speed is derived quantity.
Reil [10]3 years ago
4 0

By definition, the speed of an object is given by:

v = \frac{dr}{dt}

Where,

dr/dt: derived from the position with respect to time

Therefore, speed has units of length over units of time.

Thus, speed is a derived quantity, since it depends on the value of two other quantities.

Answer:

a derived quantity is:

C. Speed

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Answer:

22.15 N/m

Explanation:

As we know potential energy = m*g*h

Potential energy of spring = (1/2)kx^2

m*g*h = (1/2)kx^2

Substituting the given values, we get -  

(400)*(9.8)*(10) = (0.5)*(k)*(2.0^2)

k = 39200/2.645

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For safety reasons, this spring constant is increased by 13 % So the new spring constant is  

 k = 19600 * 1.13 = 22148 N/m = 22.15 N/m

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2 years ago
What happens if you add additional,solid NaCl after the maximum has been reached?
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<span>it would bond to the phosphate 

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TRUE OR FALSE: The following drops were most likely dropped from a 90 degree angle.
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Answer:

True

Explanation:

If it weren't from a 90 degree angle then the circle would be a bit more oval shaped

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3 years ago
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Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. A small coil is
attashe74 [19]

Answer:

0.125 volts

Explanation:

The induced emf can be sufficient to stimulate neuronal activity.

One such device generates a magnetic field within the brain that rises from zero to 1.5 T in 120 ms.

We need to find the induced emf within a circle of tissue of radius 1.6 mm and that is perpendicular to the direction of the field. The formula for the induced emf is given by :

\epsilon=-\dfrac{d\phi}{dt}

Where

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So,

\epsilon=-\dfrac{d(BA)}{dt}\\\\=2\pi r\times \dfrac{dB}{dt}\\\\=2\pi \times 1.6\times 10^{-3}\times \dfrac{1.5-0}{120\times 10^{-3}}\\\\=0.125\ V

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3 years ago
A powerful motorcycle can produce an acceleration of 3.00 m/s2 while traveling at 106.0 km/h. At that speed, the forces resistin
otez555 [7]

Answer:

"1155 N" is the appropriate solution.

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Given:

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a=3 \ m/s^2

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By using Newton's second law, we get

⇒ F-F_f=ma

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⇒         F=ma+F_f

By putting the values, we get

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⇒             =1155 \ N

7 0
3 years ago
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