Physics, 24.02.2022 04:50 webbjalia04
Tiny sensors in smartphone could be used to determine the position of the phone on
the Earth’s surface by measuring the Earth’s magnetic field. A current I is applied to a
slice of semiconductor as shown in Figure 1(a).
After detecting magnetic field, Bexternal of 2.55 mT on the slice, the electrons collect at
the top edge of the slice and the bottom edge becomes positively charged as shown in
Figure 1(b).
(a) Explain why the electrons collect at the top of the edge of the slice.
(b) Determine the magnitude of the maximum magnetic force that could be exerted on
the electron if the electron moves through the field with a speed of 5.5 × 106 m s
−1
.
(c) What is the magnitude of the maximum acceleration of the electron?
(d) Would the field exert the same magnetic force exerted on a proton moving through
the field with the same speed in (c)? Explain your answer.
(e) If there is a straight wire with current of 6.0 A placed 1.5 mm near the slice of
semiconductor as shown in Figure 1(c), determine the magnitude and direction of the
magnetic field at point A.
Answers: 3
Physics, 22.06.2019 03:00
According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?
Answers: 1
Physics, 22.06.2019 11:00
Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?
Answers: 1
Physics, 22.06.2019 23:20
Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above
Answers: 2
Tiny sensors in smartphone could be used to determine the position of the phone on
the Earth’s sur...
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