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Consider a ring of radius 3.5 cm with a uniform linear charge density λ = 4.6 C/m. Calculate the E field at a distance 3 cm from the center along the axis of the ring.
2.79×1012 V/m A part of the above ring is cut off so that the remainder subtends an angle 66° at the center of the circle. Find the magnitude of the E field at the center of this new arc, assuming that the three-fourths of the charge was lost in the cutting process.
can someone answer the second question and a similar one in the following?
Two circular disks, each of area 1.70×10-4 m2, are situated parallel to one another (see figure). The distance between them is small compared with their radii. Both disks are uniformly charged; their charges per unit area are σ = 2.40×10-5 C/m2 for one and -σ = -2.40×10-5 C/m2 for the other. Compute the force exerted by one on the other. You may assume for the purposes of calculating the electric field that the discs are infinite in extent
An ac generator with a frequency of 125Hz and an rms voltage of 21.5V is connected in series with a 15.0kohm resistor and a 0.280µF capacitor. What is the rms current in this circuit
In the x-y plane, a point of +2.6 uC is on the x-axis at (-3 cm, 0), and a second point charge of -3.4 uC is also located on the x-axis at the point (5cm, 0 cm), Determine the Electric Potential...Va and Vb at the points Pa (0,0) and Pb (0, 6cm)
A group of students are camping in the middle of the forest on a very dark night. Their torch batteries went flat hours ago. find the speed of the unidentified noisy object
Suppose a monatomic ideal gas is contained within a vertical cylinder that is fitted with a movable piston. Through what distance does the piston drop
Assuming the truck continues at constant speed from this minimum distance, for how long must the light remain yellow for the truck to completely clear the intersection before the light turns red.
when it rains water vapor in the air condenses into liquid water and energy is released.a how much energy is released
the distance between new york and los angeles is about 5000 km. a jet traveling at a speed of 815 kmhour leaves new
A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes the wave 0.695 s to reach the opposite tower, 20.0 m away. If a 1.00-m length of the ..
In the absence of air resistance, a projectile is launched from and returns to ground level. It follows a trajectory similar and has a range of 26 m. Suppose the launch speed is doubled, and the projectile is fired at the same angle above the grou..
List (by number and name) and define with words or equations each of Newton's Laws governing linear motion. Give a real life example illustrating each.
Andrea Castle was an employee with Sage Direct Marketing Pty Ltd. She was employed under an Enterprise Agreement.
A laser beam is traveling through an unknown substance. When it encounters a boundary with air, the angle of reflection is 24.9° and the angle of refraction is 43.0°. What is the index of refraction of the substance
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