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The electric field on the axis of a uniformly charged ring has magnitude 360 kN/C at a point 5.6cm from the ring center. The magnitude 18 cm from the center is 110 kN/C; in both cases the field points away from the ring.
(a) Find the ring's radius.
(b) Find the ring's charge.
Find the angular momentum of the second hand on a clock. The second hand has a length of 20.0cm and a mass of 8.0g
A hoop and a disk, both of 0.72- m radius and 5.0- kg mass, are released from the top of an inclined plane 3.0 m high and 7.1 m long. What is the speed of the hoop
An object, oscillating harmonically in the x-coordinate, follows a trajectory described by the following equation: x(t) = 3.83 cm *sin(4.18 s-1 *t). What is the maximum speed attained by the object
A 192-kg satellite is in circular orbit around the Earth and moving at a speed of 4.55 km/s. How much work must be done to move the satellite into another circular orbit
A 4 m long rope weighing 1.4 N is stretched so that the tension is 10 N. The left end is then made to oscillate vertically at 4 Hz by shaking the rope up, What is the speed of the traveling waves on the rope
A particle leaves the origin with an initial velocity=(3.76i)m/s and a constant acceleration =(-1.43i-2.69j) m/s^2. find velocity and position vector of particle
A simple pendulum in a science museum entry hall is 3.51m long, has a 1.25kg bob at its lower end, and swings with an amplitude of 10.50 degrees. How much time does the pendulum take to swing from its extreme right side to its acute left side.
a ship's horn can be heard above typical background noise if at intensity level 20 dB. what must be the power of the horn's output to achive this level at 5.0 km away
describe the enery transformations that take place as you swing on a swing.why do you have to keep pumping to keep swinging as high? what happens if you stop pumping
An electron moves at a speed of 480m/s perpendicular to the direction of the uniform magnetic field of 1 T. What is the radius of the electron's circular orbit in units of nanometers (1 m = 109 nm)
When nine people whose average mass is 88 kg sit down in a car, they find that the car drops 1.42 cm lower on its springs. What is the frequency of the car's vibration if its mass (empty) is 1700 kg
a -58nC charge is distributed uniformly along the x-axis from x = -1.3 m to x = 3.4 m. Consider a point at y = 2.2 m on the y-axis. a) what is the x-component of the electric field at the point
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