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A 32 cm diameter conducting sphere is charged to 300 V relative to V = 0 at r = infinity .
(a) What is the surface charge density ??
(b) At what distance will the potential due to the sphere be only 70 V?
A 25.00 kg block starts from rest at the top of a 24.0 m long 30.0° incline. Its kinetic energy at the bottom of the incline is 2940 J. How much work is done by friction
A standing wave on a 1.70 m long horizontal string displays three loops when the string vibrates at 125 Hz. What is the function describing the standing wave
The same device can act as both an air conditioner and a heat pump (after all, they do the same thing), what is the coefficient of performance of the device acting as a heat pump
At the end of a race a runner decelerates from a velocity of 8.00 m/s at a rate of 0.300 m/s2. What is her final velocity
A uniform stick d = 1 m long with a total mass of 249 g is suspended vertically from a frictionless pivot at its top end. A wad of putty of mass 26 g is moving horizontally with speed v. It strikes and sticks to the stick at a distance 0.75 m from..
A 3.67 g bullet is fired vertically into a 1.61 kg block of wood. The bullet gets stuck in the block, What was the initial velocity of the bullet
q1. assume acceleration is constant during each time interval but not necessarily the same in both intervals what
Two charged spheres are 19 cm apart. They are moved, and the force on each of them is found to have been quadrupled. How far apart are they now.
A cart is driven by a large propeller or fan, which can accelerate or decelerate the cart. Find the acceleration of the cart
Two plates of area 30.0 cm2 are separated by a distance of 0.0150 cm. calculate the potential difference (voltage) between the two plates
A single conservative force acts on a 5.00kg particle. The equation Fx = (2x + 4) Ndescribes this force, evaluate the change in the potential energy of the system
Two ball, of equal masses mA = 40g and mB = 60g, are suspendedas shown. What is the velocity of each ball after the elastic collision
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