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A extraction plant uses an applied emf of 3.0v and a current of 310000 A. One tonne of Aluminium is extracted after 16 hours.
1. What is the power consumption of the electrolysis?
2. What is the effective electrical resistance of the cell?
3. How much energy , in joules, is used in extracting one tonne of aluminium?
Show all working out and explain methodology.
A 64 kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between the skis and the snow is 0.15. What would be the magnitude of acceleration.
A 12 g bullet travelling at 420 m/s is fired into the middle an unlatched 32.0 kg door. The door in hinged on one end, is 1.20 m wide and has I = 1/3 Md2. The bullet hits the middle of the door. What is the angular speed of the door just after the bu..
A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.50 m and a mass of 475 kg. Find the kinetic energy stored in the flywheel
the angle of reflection of a reflected ray is 75ordm. what is the angle formed by the incident ray and the reflected
A 300 kg elevator is being pulled upwards by a steel cable at a constant velocity. What is the net force on the elevator
A +44 nC charge is placed on the z- axis at (0,0,5 cm). A grounded conducting plane fills the x-y plane where z=0. A) Find the surface charge charge density on the conducting plane at the origin.
An ionized deuteron (a particle with a charge) passes through a velocity selector whose perpendicular magnetic and electric fields have magnitudes of 43 mT and 7.8 kV/m
A sealed 88 m3 tank is filled with 4000 moles of ideal oxygen gas (diatomic) at an initial temperature of 270 K. find The final pressure of the gas
A person drops a cylindrical steel bar (Y = 1.70 × 1011 Pa) from a height of 4.70 m, what is the maximum compression of the bar
A dielectric sphere of radius a has a charge +Q uniformly distributed throughout its volume. What is the potential outside the shell
A pendulum of length 2.0 m is held out to point A
A tennis player swings her 1000 g racket with a speed of 12.0m/s . She hits a 60 g tennis ball that was approaching her at a speed of 10.0m/s, What is the target's speed just after the bullet emerges
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