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A solid sphere of radius R carries a volume charge density ?=?0e^r/R, where ?0 is a constant and r is the distance from the center. Find an expression for the electric field strength at the sphere's surface.
what is the diameter of the copper rod. Pull horizontally on a crate with a force of 140 N and it slides across the floor in a dynamic equilibrium. How much friction is acting on crate.
An 18 g rifle bullet traveling 210 m/s buries itself in a 3.9kg pendulum hanging on a 2.6 m long string, which makes the pendulum swing upward in an arc. find the vertical and horizontal components of the pendulum's displacement.
Illustrate what is the time necessary for crossing if the hunter wishes to move neither upstream nor downstream whilst crossing the river? Draw the vectors to scale on a graph to determine the answer.
The springs of a 1400 kg car compress 6.0 mm when its 68 kg driver gets into the driver's seat. If the car goes over a bump, what will be the frequency of vibrations.
A lighthouse that rises h1 = 43.6 ft above the surface of the water sits on a rocky cliff that extends $d$ = 20.0 ft from its base, as shown in the figure below. A sailor on the deck of a ship sights the top of lighthouse at an angle of $theta$ = 29...
An object 9 cm tall is placed at the zero mark of a meterstick. A spherical mirror located at some point on the meterstick creates an image of the object that is upright, 4 cm tall, and located at the 49.0 cm mark of the meterstick.
The energy of a simple harmonic oscillator could be doubled by increasing the amplitude by a factor of approximately
The ball rebounds straight upward to a height of 0.660 m. illustrate hat are the magnitude and direction of the impulse of the net force applied to the ball during the collision with the floor.
Important information about Physics - Mechanics A satellite of mass 205 kg is launched from a site on the Earth's Equator into an orbit at 175 km above the surface of Earth.
A 2.50mL syringe has an inner diameter of 6.00mm , a needle inner diameter of 0.290mm , and a plunger pad diameter of 1.2 cm, What is the minimum force the nurse needs to apply to the syringe
A soccer ball is kicked with an initial horizontal velocity of 18 m/s and an initial vertical velocity of 13 m/s, What is the initial speed of the ball, What is the initial angle of the ball with respect to the ground
Identical point charges of +3.6 C are fixed to diagonally opposite corners of a square. A third charge is then fixed at the center of the square, such that it causes the potentials at the empty corners to change signs without changing magnitudes.
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