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A point charge -Q is placed on the x axis at the origin. A point charge of +Q is placed on the x axis at x = -1.0 m and another at x = +1.0 m. If Q = 10.0 μC, what is the magnitude of the electrostatic force on the charge at x = +1.0 m? (k = 8.99x109 Nm2/C2) 11N (How Is This 11N) i keep getting a different answer.
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 54.35 diopters, what is the height of the image on her retina
A switch that connects a battery to a 22 μF capacitor is closed. Several seconds later you find that the capacitor plates are charged to 30 μC. What is the emf of the battery? Express your answer with the appropriate units.
If engine works between a hot reservoir at 640 K and acold reservoir at 320K. What is the maximum efficiency of the engine
Liquid helium is stored at its boiling-point temperature of 4.2 K in a spherical container (r=0.30 meter). Find what mass of liquid helium boils away through a venting valve in one hour
In a typical Hollywood movie stunt, a person jumps off a building and lands on a cushion to safely stop. How much voltage should the battery have to stop the object as it reaches the ground
An airplane is flying with a velocity of 81.0 m/s at an angle of 23.0 degrees above the horizontal. How far from the dog will the suitcase land in m
for uniform circular motion describe how the speed velocity and acceleration change with time. for each vector quantity
Determine what mass of tree sap could be raised from 18°C to its boiling point and then evaporated by this energy
How far has the milk travelled in YOUR frame of reference. What is the minimum speed at which the milk must be travelling such that it is still good when it returns to you in 10 days?
A circuit consists of three resistors (R1=29 , R2=14 , R3=41 ) and a battery(37 V). What is the current coming from the battery
A capacitor is constructed of two 5.3 m2 parallel metal plates separated by an air gap of 0.010 mm. An electric potential of 25 V is applied to the capacitor. calculate the capacitance of the structure
You measure an electric field of 1.37×106N/C at a distance of 0.159m from a point charge. What is the electric flux through the surface of a sphere
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