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Two particles are fixed to an x axis: particle 1 of charge q1 = +2.10 x 10-8 C at x = 20 cm and particle 2 of charge q2 = -5.00q1 at x = 70 cm. At what coordinate on the axis is the net electric field produced by the particles equal to zero?
sometimes a person cannot clearly see objects close up or far away. to correct this type of vision bifocals are often
two point charges are located on the x axis. the first is a charge q at x -a. the second is an unknown charge located
A 15µ F capacitor is joined in series with a 35µ F capacitor and a 12 Volts battery. How much energy is stored by the second capacitor
Suppose a star with radius 8.30 108 m has a peak wavelength of 684 nm in the spectrum of its emitted radiation. Find the energy of a photon with this wavelength.
The plates of a spherical capacitor have radii 36.0 mm and 44.0 mm. What must be the plate area of a parallel-plate capacitor with the same plate separation and capacitance
The mean distance of Mars from the Sun is 1.52 times that of Earth from the Sun. Determine the mass of Earth from the period T
How much force must the elbow exert?What is the horizontal distance between the elbow and the point where the weight of the forearm acts?
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 24.0° below the horizontal, Find the length of time the car is in the air
A large solar panel on a spacecraft in Earth orbit produces 2.2{\rm kW} of power when the panel is turned toward the sun. What power would the solar cell produce
A worker on a scaffolding 65 ft above the ground needs to lift a 390 lb bucket of cement from the ground to a point 30 ft above the ground by pulling on the rope weighting 2 lb/ft . Set up the integral of how much work is required (just give the i..
A lady is pulling her luggage that has a mass of 24 kg. What is the total power exerted on the luggage by the lady
a particle of mass m1 moving with a velocity u makes a head-on elastic collision with a particle of mass 2m initially
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