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A solenoid made out of 3500 turns of a fine silver wire about a tube 1cm in radius has a potential drop of 3.2V at a current of 2A in the lab. The resistivity of silver is 1.6x10^-8 ohms*m at room temperature. What is the cross-sectional area of the wire?
A spherical balloon has the potential to reach a diameter of 35 cm, what would be the volume of this balloon when it reaches a pressure of 0.75P0 and a temperature of -15°C
On a workday the average decibel level of a busy street is 80 dB, with 100 cars passing a given point every minute. If the number of cars is reduced to 45 every minute on a weekend, what is the decibel level of the street.
Suppose that the spring is ideal and that the distance by which the spring is compressed is negligible compared to H.
Find the rms speed and the average kinetic energy of a hydrogen atom at a temperature of 3.4x107 K. (At this temperature (3.4 x10^7)
An object with a charge of 0.880 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
What centripetal force will the ride exert. How far should the stone fall so that the pulley has 6.50 J of kinetic energy.
A 41-kg box is thrown at a speed of 220 m/s & is brought to a halt in a collision that lasts for a time of 6.5 m/s. Find the magnitude of the average net force that acts on the box during the collision.
Find the wavelengths of these extremes at a temperature. find out the force exerted by the man on the rope, and the work done in dragging the box over a distance of 15m.
A spring has an unstretched length of 12cm. When an 80 g ball is hung from it, the length increases by 4.0 cm.Then the ball is pulled down another 4.0 cm and released. a) What is the spring constant? b) What is the period of the oscillation?
A 94 g stone is whirled in a horizontal circle on the end of a 73 cm long string. The stone takes 1.10 s to make each complete revolution. Conclude the angle that the string makes with the horizontal.
A heat engine has a maximum possible efficiency of 0.800. If it operates between a deep lake with a constant temperature of 287.0 k and a hot reservoir, what is the temperature of the hot reservoir?
How to find out potential energy
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