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A charge of -3.35 nC and a charge of -6.40 nC are separated by a distance of 80.0 cm. Find the position at which a third charge of +7.60 nC can be placed so that the net electrostatic force on it is zero.
The Earth's orbit has a radius of 1.52·1011 m, and that of Mercury has a radius of 6.98·1010 m. What is the length of a vector from Earth to Mercury
a 0.45 f parallel- plate capacitor is connected to a 6v battery. a how much is the charge on the plates? b what is the
A cosmic-ray proton in interstellar space has an energy of 21.5 MeV, What is the magnetic field in that region of space
The speed of sound in air is 345 m/s. A tuning fork vibrates above the open end of a sound resonance tube. what is the frequency (in Hertz) of the tuning fork
a child throws a 5.4 kg package horizontally from a boat with a speed of 10 m/s. Calculate the resulting velocity of the boat
Two conductors having net charges of+20.0µCand-20.0µC have a potential difference of20.0V between them. Determine the capacitance of the system.
An 8000-kg freight car rolls along rails with negligible friction. The car is brought to rest by a combination of two coiled springs.
A toroid of mean radius 28 cm and circular cross section of radius 2.3 cm is wound with a superconducting wire of length 1000 m that carries a current of 430 A. What is the number of turns on the coil
A 30.0kg - goldfinch lands on a slender branch, where it oscillates up and down with simple harmonic motion of amplitude 3.50×10?2m and period 1.60s.b, What is the maximum acceleration of the finch
A rope connects a 25 kg mass sitting on a 30 degree incline with a hanging mass of 90 kg, the rope passes over a 12kg disk-shaped pulley that has a radius of 0.250m. When the system is released, the heavier mass descends, the rope turns over the p..
For a safe re-entry into the Earth's atmosphere, the pilots of a space capsule had to reduce their speed from 2.76 E 4 m/s to 1.02 E 4 m/s. For how long did they have to fire their engine
In a diffraction experiment, light of 600nm wavelengthproduces a first-order maximum 0.350 mm from the central maximum ona distant screen. obtain the wavelength of the light from the second source
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