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A point charge +40.0uC is located on the x axis at the point x = -20.0 cm and a second particle of charge -50uC is placed on the x axis at x = +30.0 cm. What is the magnitude of the total electrostatic force on a third particle of charge -4.0uC placed at the origin. (k = 8.99 x 10^9 Nm^2/C^2) 55.9 N is the answer?
The potential dissimilarity between the plates of a parallel plate capacitor is 35 V and the electric field among the plates has strength of 750 V/m. If the plate area is 4.0 × 10-2 m2,what is the capacitance of this capacitor?
A speeder is pulling directly away and increasing his distance from a police car that is moving at 23.0 m/s with respect to the ground. Calculate the speeder's speed with respect to the ground.
Light from a laser strikes a diffraction grating that has 5 312 grooves per centimeter. Determine the wavelength of the laser light
A -2.3nC charge is on the x-axis at x1 = -7cm and a 2.5nC charge is on the x-axis at x2 = 11 cm. At what points on the y axis is the electric potential zero
q1. find out a capacitance and b maximum voltage that can be applied to a teflon-filled parallel- plate capacitor
a woman of mass m stands at the edge of a solid cylindrical platform of mass m and radius r. at t 0 the platform is
an lr circuit has a resistance r 25 w an inductance l 5.4 mh and a battery of emf 9.0 v. how much energy is stored
A 73.0 kg base runner begins his slide into second base when he is moving at a speed of 4.1 m/s. The coefficient of friction among his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base.
the dentists chair uses a hydraulic press in which the radius of the smaller piston is 3 cm. the dentist wishes to
q1. a chair of mass 14.0 kg lies atop a horizontal floor the floor is not frictionless. you push on the chair with a
For comparison, what is the magnitude of the acceleration a test tube would experience if dropped from a height of 1.0 m and stopped in a 2.0-ms-long encounter with a hard floor
A sailboat is initially moving at a speed of 4m/s. A strong windblows up and accelerates the boat forward with a constantacceleration of 0.2m/s^2 for 10s. What is the final speed of the sailboat
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