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Hitman42 [59]
4 years ago
5

A straight wire of length 4.5 cm moves at a constant speed of 5.2m/s perpendicular to its length and a uniform magnetic field. I

f the induced e.m.f. in a straight wire is 85mV find the magnetic flux density.
Physics
1 answer:
liraira [26]4 years ago
3 0
Well you have to minus the 4.5 to 5.2 and the answer to that would be -11.5 and calculated that to be 4.5
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An iv curve is generated for two ohmic devices, one is a good conductor and the other is a good insulator. which one will have a
allochka39001 [22]

As per the question there are two ohmic devices.

The first ohmic device is a good conductor and the second one is a good insulator.

As per Ohm's law the current flowing through a conductor is directly proportional to the potential difference maintained across the two ends of a conductor at constant temperature and pressure. If V is the potential and I is the current flow through these Ohmic devices,then mathematically it can be written as-

                                                      V∝ I   [ at constant temperature and pressure]

                                                   ⇒V= IR

Here R is the proportionality constant called resistance of the material.

 Hence the resistance R  is calculated as -

                                                         R=\frac{V}{I}

Now a graph is plotted taking potential  V on X-axis and current I along Y- axis.

The graph will be a straight line  for conductor and will be a curve depending on the type of insulator.

The slope of this graph will give  the resistance of the material.

An insulator is a substance through which current flow is very low as its resistance is very high.Hence the slope of the V-I curve is very large.

A conductor is that substance through which current is flown easily as  the resistance of conductor is very low.Hence the slope of V-I curve is smaller,

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3 years ago
A person who has a job that requires working all night and sleeping during the day will end up fighting hos or her natural
LuckyWell [14K]

Answer:

A

The answer to this question is circadian rhythm. A person who has a job that requires working all night and sleeping during the day will end up fighting his or her natural circadian rythm. Hope it helps!

5 0
4 years ago
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Answer:

True

Explanation:

Most vehicle's cooling system contain a coolant that flows through certain passages in the engine, as the coolant moves through those passages it absorb heat from moving engine parts and the explosion of gasoline in the cylinders. the coolant is then stored back in a radiator which is responsible for transferring the heat from the coolant to the environment(air).  

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A loop of wire is placed in a uniform magnetic field. Let ø be the angle between the direction of b and the normal. At which val
zaharov [31]

Answer:

B. 0 degrees

Explanation:

The magnetic flux through a certain area enclosed by a loop of wire immersed in a region with magnetic field is given by:

\Phi = B A cos \theta

where

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A is the area enclosed by the coil

\theta is the angle between the direction of the magnetic field and the direction of the normal to the coil

From the equation above, we see that the magnetic flux is maximum when

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Two beams of coherent light are shining on the same sheet of white paper. when referring to the crests and troughs of such waves
tensa zangetsu [6.8K]
Middle of the paper
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