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A +13 nC charge is located at (x,y)=(0cm,12cm) and a -4.0 nC charge is located at (x,y)=(6.0cm,0cm). Where would a -15nC charge need to be located in order that the electric field at the origin be zero?
Two neutrons are in an infinite square well with L = 2.0 fm. What is the minimum total energy that the system can have? ( Neutrons, like electrons have antisymmetric wave functions ignore spin).
A speck of dust on a spinning DVD has a centripetal acceleration of 20 m/s^2. A) What is the acceleration of a different speck of dust that is twice as far from the center of the disk? B) What would be the acceleration of the first speck of dust if t..
A myopic (nearsighted) child wears contact lenses that allow her to have clear distant vision. The power of the lenses of her eyeglasses is -3.00 diopters. Without the corrective lenses, what is the far point of the girl?
An object moves uniformly around a circular path of radius20.0 cm, making one completerevolution every 2.15 s. What is the translational speed of the object
An ac generator with a frequency of 110Hz and an rms voltage of 24.0V is connected in series with a 12.0k ohms resistor and a 0.270/muF capacitor. What is the rms current in this circuit
A proton moving with a speed of 2 x 105 m/s enters a uniform magnetic field of 0.20 T. Which of the paths described below will the proton follow
The head of a 1.0 kg hammer; moving at 3.6 m/s. strikes a nail and drives it into hardwood. The head stays in contact 2.0 m/s and rebounds with negligible velocity. What is the average force exerted on the nail.
Uncompressed, the spring for an automobile suspension is 45cm long. It needs to be fitted into a space 36cm long. how much work does a mechanic have to do to fit the spring
A 12-inch cast iron water pipe that has been in service for 50 years is found to have extensive corrosion inside. How these conditions would affect friction losses in the pipe describe it.
A wheel with a rotational inertia of 5.0 kg m2 is rotating in a horizontal plane at 600 rev/min. A rim brake exerts a torque of 500 Nm on the inside rim of the wheel. Discover the initial angular velocity in units of rad/s and the number of revolutio..
consider sphere of diamer 1.0 cm. it has a total charge of q-5uc. note u mua how many excess electrons make up this
A moving 4.10 kg block collides with a horizontal spring whose spring constant is 260 N/m. The block compresses the spring a maximum distance of 15.00 cm from its rest position.
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