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1. An electron of mass 9.11 x 10-31 kg has an initial speed of 4.00 X 105 m/s. It travels in a straight line, and its speed increases to 6.80 X 105 m/s in a distance of 4.00 cm. Assume its acceleration is constant.
(a) Determine the magnitude of the force exerted on the electron.
(b) Compare this force (F) with the weight of the electron (Fg), which we ignored. F/Fg= 7.
2. Two forces F1 and F2 act on a 7.80-kg object. F1 = 40.0 N and F2 = 11.0 N.
(a) Find the acceleration of the object for the configuration of forces shown in Figure (a).
(b) Find the acceleration of the object for the configuration of forces shown in Figure (b).
A double slit separated by 0.0572 mm is placed 1.70 m from a screen. (a) If yellow light of wavelength 590 nm strikes the double slit, what is the separation between the zeroth-order and first-order maxima on the screen? cm (b) If blue light of wavel..
A long horizontal wire carries a current of 48 {rm A}. A second wire, made of 2.6 mm diameter copper wire and parallel to the first, is kept in suspension magnetically 15 {rm cm} below. Examine the magnitude of the current in the lower wire.
A bullet with a mass m = 4.83 g and initial speed of 330 m/s passes through a wheel which is initially at rest, What is the angular speed of the wheel just after the bullet leaves it
The potential difference across the terminals of a battery is V1 when there is a current of I1 in the battery from the negative to the positive terminal, Compute the internal resistance r of the battery
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 58.05 diopters, what is the height of the image on the retina
An electron (electron 1) moves to the left by speed 0.93c while a second electron (electron2) moves to the left with speed 0.51c. What is the speed of electron 2 as gauged by an observer sitting on electron 1?
Monochromatic light of variable wavelength is incident normally on a thin sheet of plastic film in air. The reflected light is a maximum only for 472.9 and 696.0 in the visible spectrum. What is the minimum thickness of the film.
Classify and explain the five legal theories you could use in an attempt to have the regulation declared invalid and overturned in court.
An electric field of 1.86 kV/m and a magnetic field of 0.515 T act on a moving electron to produce no net force. If the fields are perpendicular to each other, what is the electron's speed
A parallel-plate air capacitor of capacitance of 270 pF has a charge of magnitude 0.140 µC on each plate. The plates are 0.306 mm apart. What is the area of each plate? What is the surface charge density on each plate? What is the potential dissimil..
A vacuum cleaner belt is looped over a shaft of radius 0.44cm and a wheel of radius 1.50cm. What is the speed of a point on the belt
Consider a long wire that makes a right angle (90°) bend. If the wire carries a current I, what is the magnetic field at point A
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