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A charge of -3.00 µC is fixed at the center of a compass. Twoadditional charges are fixed on the circle of the compass (radius =0.100 m). The charges on the circleare -3.90 µC at the position duenorth and +5.00 µC at the position due east. What is the magnitude and direction of the net electro static force acting on the charge at the center? Specify the direction relative to dueeast (0°).
Assume all temperatures to be exact. Ice (initially at 0 ) is added to 0.50L of tea at 18C to make the coldest possible iced tea. If enough ice is added so the final mixture is all liquid, how much liquid is in the pitcher when this condition occurs?
A uniform thin rod of length 0.400 m and mass 4.50 kg can rotate in a horizontal plane about a vertical axis through its center. what is the bullet's speed just before impact
A siren has a frequency of 875 Hz when it and an observer are both at rest. The observer then starts to move and finds that the frequency he hears is 1251 Hz. What is the speed of the observer
When a golfer tees off, the head of her golf club which has a mass of 280 g is traveling 58 m/s just before it strikes a 46-g golf ball at rest on a tee. determine the speed of the golf ball just after impact
A long solenoid with 10.0 turns/cm and a radius of 7.00 cm carries a current of 20.0 mA. What is the magnitude of the magnetic field there
A pilot of mass 70kg pulls out of a dive following a circular path of radius 850m and at a speed of 200m/s. what is the force that the pilot feels
A satellite of Mars, called Phobos, has an orbital radius of 9.4 106 m and a period of 2.8 104 s. Assuming the orbit is circular, determine the mass of Mars
Early in the morning, when the temperature is 5.0°C, gasoline is pumped into a car's 45 L steel gas tank until it is filled to the top. How much gasoline spills out in this case
A 10000 kg empty railroad car moving at 3 m/s collides with a loaded railroad car weighing 196000 N and couples with it. What is the final velocity of the combined railroad cars
A steel washer is suspended inside an empty shipping crate from a light string attached to the top of the crate. The crate slides down a long ramp that is inclined at an angle of 39 degrees above the horizontal. The crate has mass 244 kg .
A circuit contains six 205 ohm lamps with 60 W bulbs and a 9 ohm heater connected in parallel. voltage across the circuit is 120 V.what is the current in the circuit when four lamps are turned on.
Suppose a capacitor in a video camera has a capacitance of 26.0 ?F, how much potential energy is stored in the capacitor
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