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Could a Lorentz engine (like the ones that move the write head inside of hardrives) be used to run car ? Would it be possable to get it producing 60hp, and a decent amount of tourque, if so how large would it have to be / what would its power consumption be ?
In an experiment, a rectangular block with height h is allowed to float in two separate liquids. In the first liquid,which is water, it floats fully submerged. In the second liquid it floats with height h/5 above the liquid surface. What isthe relati..
A wire coil of 35 turns has a cross-sectional area of 12 cm2. The coil is placed in a uniform field of a large magnet with B = 0.12 T. What is the magnitude of the average emf produced
In getting ready to slam-dunk the ball, a basketball player starts from rest and sprints to a speed of 11.9 m/s in 3.94 s. determine the distance he runs
A charged isolated metal sphere of diameter 16.0 cm has a potential of 7000 V relative to V = 0 at infinity. Calculate the energy density in the electric field
earths atmosphere is constantly bombarded by cosmic ray protons that originate somewhere in space. if the protons all
Forensic scientists can measure the muzzle velocity of a gun by firing a bullet horizontally into a large hanging block that absorbs the bullet and swings upward. What was the original speed of this bullet
The sound level 22 m from a loudspeaker is 66 dB. What is the rate at which sound energy is produced by the loudspeaker, assuming it to be an isotropic source
When you are learning to juggle two balls, one in your right hand and the other in your left hand, you are told to throw the second ball when the first ball has reached its highest point. What physical reason best explains this instruction
A box of wood has a vertical projection of 6 inches when located in water and 4 inches when located in alcohol. evaluate the specific gravity of the wood
An electron is placed in a region with a constant, uniform electric field pointing in the positive x direction. In what direction is the electric force on the electron
Two campers carry their gear (90.7kg) on a light, rigid horizontal pole whose ends they support on their shoulders 1.83m apart. If Holly experiences a compressive force of 534N, what force will Rocky feel? (b) Where is the load hung on the pole (gau..
A Carnot engine has 40 g of helium gas as its working substance. It operates between two reservoirs of temperatures T1 = 400°C and T2 = 60°C. find the work generated by this engine during one cycle
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