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At each corner of a square of side there are point charges of magnitude Q, 2Q, 3Q, and 4Q,
a) Find what the magnitude of the force on the charge 2Q.
b) Find the direction of the force on the charge 2Q.
A string is wrapped many times around a pulley and is connected to a block with mb = 4.749 kg that is hanging vertically. What is the magnitude of the acceleration of the block
Suppose a 65 kg person stands at the edge of a 6.5 m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1850 kg m2. Calculate the angular velocity of the turntable
Blocks with masses of 2.0 , 4.0 , and 6.0 are lined up in a row on a frictionless table. All three are pushed forward by a 57 N force applied to the 2kg block.How much force does the 4 block exert on the 6.0 block.
A 55.8 kg person rides a sled 15 meters along a hillside that is inclined at 25 degrees above the horizontal. what is the person's speed upon reaching the bottom
question a uniform meter stick is in static rotational equilibrium when a mass of 220g is suspended from the 5.0-cm
a charged capacitor is connected to a resistor and a switch as in the figure below. the circuit has a time constant of
A cop car drives at 30m/s toward the scene of a crime, with its siren sounding (f = 2125 Hz.) Estimate the frequency heard by people at the crime scene as the siren approaches and the frequency heard as the siren moves away from people.
a uniform field is established between two horizontal plates by connecting them to a 100 volt battery with the upper
If the elastic limit of steel is 5.0 multiplied by 108 Pa, determine the minimum diameter a steel wire can have
Two objects with different masses are stuck together and attached to the ends of two strings coming down from a mass less, frictionless pulley. explain will the tension in the rope change
A block of mass m = 12 kg has a speed of V and is behind a lock of mass M=40 kg that has a speed of .5 m/s. What is the loss of kinetic energy due to the collision
A 1051 kg coasts down a hill 40 m high with its engine off and the driver's foot pressing the brake pedal. How much energy was converted into heat on the way down
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