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3 years ago

Why do electrical devices have resistance

Physics

1 answer:

Kamila [148]3 years ago

8 0

As electrons move through the conductor, some collide with atoms, other electrons, or impurities in the metal.

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Explanation:

Recall that

$1\:\text{micron} = 1\:\mu\text{m} = 10^{-6}\:\text{m}$ so the speed of the bacterium is

$v = \dfrac{6.82×10^{-6}\:\text{m}}{3.5\:\text{s}} = 1.9×10^{-6}\:\text{m/s}$

Next, we convert this speed to km/hr. Recall that

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Therefore,

$1.9×10^{-6}\:\dfrac{\text{m}}{\text{s}}×\left(\dfrac{1\:\text{km}}{1000\:\text{m}}\right)×\left(\dfrac{3600\:\text{s}}{1\:\text{hr}}\right)$

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3 years ago

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Answer:

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3 years ago

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Consider two positively charged particles, one of charge q0 (particle 0) fixed at the origin, and another of charge q1 (particle

charle [14.2K]

Answer:

F12= (kq1q2/r12 squared)*e12

Explanation:

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3 years ago

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3 years ago

An object on a number line moved from x = 15 cm to x = 165 cm and

podryga [215]

Answer:

v_avg = 2.9 cm/s

Explanation:

The average velocity of the object is the sum of the distance of all its trajectories divided the time:

x_all is the total distance traveled by the object. In this case you have that the object traveled in the first trajectory 165cm-15cm = 150cm, and in the second one, 165cm - 25cm = 140cm

Then, x_all = 150cm + 140cm = 290cm

The average velocity is, for t = 100s

hence, the average velocity of the object in the total trajectory traveled is 2.9 cm/s

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3 years ago

Why do electrical devices have resistance​

Why do electrical devices have resistance