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Two charges, +4.0 and -16 µC, are fixed in place and separated by 3.0 meter.
(a) Find at what spot along a line through the charges is the net electric field zero? Locate this spot relative to the positive charge.
(b) Find what would be the force on a charge of +14 µC placed at this spot?
a a 2kg block rests on a 30 degree incline determine the coefficient of static friction required to keep the block
A proton with mass 1.67×10−27 kg and charge 1.60×10−19 C accelerates from rest in a uniform electric field of strength 500 N/C. (a) What is the magnitude of the acceleration of the proton? (b) How long does it take the proton to reach a speed of 35,0..
A tuning fork generates sound waves by a frequency of 248 Hz. The waves travel in opposite directions along a hallway, are reflected by walls, and return. The hallway is 46.0 m long and the tuning fork is located 14.0 m from one end.
Ball A is attached to one end of a rigid massless rod, while an identical ball B is attached to the center of the rod. Each ballhas a mass of m= 0.50 kg, and the length of each half rodis L= 0.1m.
A trap door, of length and width 1.65 m, is held open at an angleof 65.0 degrees with respect to the floor. what is the torque exerted on the trap door by the rope
Inside an insulated container, a 250-g ice cube at 0 °C is added to 200 g of water at 18 °C. What is the remaining ice mass
a supertaker filled with oil has a total mass of 6 108 kg. if the dimensions of the ship are those of a rectangular
finding the thermal conductivity (k) of a box with total surface area of 1.20 m and a wall thickness of 4cm is made of an insulating material. a 10 W electric heater inside the box maintain the inside temp. at 15 C above the outside temp.
An object is released from rest on a planet that has no atmosphere. The object falls freely for 3m in the first second. What is the magnitude of acceleration due to gravity on the planet?
Ice of mass 52.0 g at -10.6° C is added to 188 g of water at 14.5° C in a 102 g glass container of specific heat 0.200 cal/g-°C at an initial temperature of 23.3° C
A 150 g mass hangs from a fishing line. If it falls and accelerates at 4.0 m/s^2, what is the tension in the fishing line
A 1000kg car is moving at a constant speed of 7 m/s when it hits the back bumper of another car with 1200kg of mass moving in the same direction at a constant speed of 6m/s
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