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Question
Cubic meters of pure water flows over a water fall, falling 37 m. If all of the water's potential energy is converted to kinetic energy at the bottom of the falls, which then heats the water, what is the temperature increase of the water?
A 150? resistor is across a 24.0V battery. Find the energy supplied by the battery in 4min
A vertical ideal spring is mounted on the floor and has a springconstant of 170 N/m. A 0.70-kg block is placed on the spring in twodifferent ways.
Find the two times the ball is at the height y = ½ h. Show the final formula and the numerical answers.
A string is fixed at both ends and is vibrating at 120 Hz, which is its third harmonic frequency. Determine the length of the string
An optical system is designed so that an object for a convex spherical mirror of focal length f=15 cm is 20 cm behind the mirror, determine whether the image is real or vertual, erect or inverted
A cylinder with a height of 1.10m and an inside diameter of 0.190m is used to hold propane gas (molar mass 44.1g/mol ) for use in a barbecue. Calculate the mass of propane that has been used
The toadfish makes use of resonance in a closed tube to produce very loud sounds. The tube is its swim bladder, used as an amplifier. Calculate the intensity of the sound wave emitted
A 35-kg block is supported by the spring arrangement shown. The block is moved vertically downward from its equilibrium position and released.
A siren has a frequency of 899 Hz when it and an observer are both at rest. Is the observer moving toward or away from the siren
Calculate the magnitude of the current density in the wire. Find out the work done by the hockey player on the puck. What is the change in kinetic energy of the puck.
a large cylindrical tank contains 0.790m3 of nitrogen gas at 20.0?c and 7850pa absolute pressure. the tank has a
A charge of 4.18 µC is located at the origin. A charge of -7.75 µC is located 4.80 cm along the x axis, that is, at the point (4.80,0.00) cm. Find the electric potential 2.95 cm along the y axis, that is, at the point (0.00, 2.95) cm
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