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A child is twirling a 0.0165-kg ball on a string in a horizontalcircle whose radius is 0.130 m. The ball travels once around the circle in 0.649 s. (a) Determine the centripetal force acting on the ball. (b) If the speed is doubled, by what factor does the centripetal force increase?
a rock is dropped into a deep hole and 2.5 s later the sound of striking the bottom is heard. if the speed of sound is
a circular conducting loop with a radius of 1.0m and a small gap filled with a 10.0ohm resistor is oriented in the xy-plane. what is the magnitude of the current that will be caused to flow in the conductor
A car with an initial speed of 10.7 m/s accelerates at a uniform rate of 0.92 m/s squared for 3.6 s. find the final speed and displacement of the car
If the distance to a point source of sound is doubled, by what multiplicative factor does the intensity change
In a certain automobile engine with an efficiency of 21.2%, combustion of gasoline in one cylinder releases 505 J of heat. Find the work done by the system of gasoline vapor and air on the surroundings during one cycle
how close can two protons get is one is at rest and the other has a kinetic energy equal to the average energy at t107
a proton is released from rest in a uniform electric field of magnitude 352 nc.a find the electric force on the proton.
a projectile is launched from a cliff 200m above the valley floor with an initial velocity of 60ms at 60degrees above
An object weighing 335 N in air is immersed in water after being tied to a string connected to a balance. Find the density of the oil
In an oscillating LC circuit, L = 3.20 mH and C = 2.20 µF. At t = 0 the charge on the capacitor is zero and the current is 2.40 A. (a) What is the maximum charge that will appear on the capacitor?
an object starts moving in a straight line from position x at time t0 with velocity v0 . its acceleration is given by
A physics student playing with an air hockey table (frictionless surface) , What is the angle of inclination
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