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A parallel-plate capacitor has circular plates of 10.1 cm radiusand 1.28 mm separation. (a) Calculate the capacitance in picofarads. (b) What charge in nanocoulombs will appear on the plates if a potential difference of 135 V is applied?
a flowerpot is knocked odd a balcony from a height d above the sidewalk. it falls toward an unsuspecting man of height
When an air capacitor with a capacitance of 400 nF (1nF=10^(-9) F)is connected to a power supply, the energy stored in the capacitoris 2.05×10^(−5) J. While the capacitor is keptconnected to the power supply, a slab of dielectric is inserted that ..
Seat belts and air bags save lives by reducing the forces exerted on the driver, A 58kg person is in a head-on collision. The car's speed at impact is 13m/s. Estimate the net force on the person if he or she is wearing a seat belt and if the air ..
A circular coil with a radius of 20 cm and containing 60 turns is placed in a uniform magnetic field which makes an angle of 30 degrees with respect to the plane of the coil, find the magnitude and direction of the induced current in the coil
A cable is stretched horizontally across the top of two vertical poles 20 m apart. What is the tension in each cable segment
the solar wind is a thin hot gas given off by the sun. charged particles in this gas enter the magnetic field of the
During a rockslide, a 760 kg rockslides from rest down a hillside that is 500 m long and 300 m high. How much energy is transferred to thermal energy
An object of mass 5 kg is dropped from a certain height. Just before it strikes the ground it has a kinetic energy of 1250 J. From what height was the object dropped
A boat has a mass of 6800 kg. Its engines generate a drive force of 4050 N, due west, while the wind exerts a force of 860 N, What is the magnitude and direction of the boat's acceleration
Two parallel straight wires are 10 cm apart carry currents in opposite directions. Determine the magnitude and direction of the magnetic field halfway between the wires
A mass attached to a spring vibrates 7 times in 22.19 seconds. What is the angular frequency (in radians/second) of the mass
A 5 kg block, measuring 10 cm per side, is held 50% submerged in water by a helium balloon. what is the diameter of the balloon
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