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Question1
Water has a specific heat capacity of 4186 J/kg °C. A tank contains 500 kg of water at 10.0°C. The water is heated up to a temperature of 90.0°C. If electricity costs $0.100 per kilowatt-hour, then what is charge of heating the water?
Question2
A ring of radius R, charge Q and mass M is spinning around its symmetry axis. The ring sits on a horizontal frictionless surface. A uniform outside magnetic field of strength B is parallel to the plane of the ring. Find out the angular velocity at which there is zero normal force between one edge of ring and surface.
Question3
Compute molar volume for 3-methylhexane at p=3000psia and T=60F given that the critical pressure and critical temperature for 3-methylhexcane are 408.1psia and 503.8F respectively. (Show all steps).
Elaine went to her outside faucet to fill a 0.0189-m3 bucket with water to wash her car. How long does it take to fill the bucket completely
A disk with a mass of 37.5kg and a radius of 38.3cm is mounted on a frictionless horizontal axle. A string is wound many times around the disk and then attached to a 56.4kg block. Find the acceleration of the block, assuming that the string does n..
A 3.10 kg steel ball strikes a wall with a speed of 10 m/s at an angle of 60 ° with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.190 s, what is the average force exerted on the ball by th..
Two coils are at fixed locations. When the current in coil 2 increases at a rate of 15 A/s, the emf in coil 1 is 25 mV. Find their mutual inductance
A string is stretched between fixed supports separated by 75.0 cm. It is observed to have resonant frequencies of 288.0 and 384.0 Hz, What is the lowest resonant frequency for this string
A particle starts from the origin at t=0 with a veolicty of 6.0i m/s and moves in the xy plane with a constant acceleration of (-2.0i+ 4.0j). how far is it from the origin
An automobile having a mass of 1,000 kg is driven into a brick wall in a safety test. The bumper behaves like a spring with constant 5.55 106 N/m, What was the speed of the car before impact
find out the current in the loop.Determine the rate at which thermal energy is produced.
A rock of mass m = 2 kg is tied to a string of length L = 1.9 m and is twirled in a vertical circle. The speed v of the rock is constant; that is, it is the same at the top and the bottom of circle.
A 2.0 kg ball is attached to a vertical post with two strings, one 2 m long and the other 1 m long. If the ball is set whirling in a horizantal circle, find the tension on each string
A bird watcher meanders through the woods, walking 0.506 km due east, 0.736 km due south, Determine the magnitude (in kilometers) of the bird watcher's displacement
A particle of rest mass 1.10 MeV/c2 and kinetic energy 2.10 MeV collides with a stationary particle of rest mass 2.80 MeV/c2. Find the speed of the first particle before the collision
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