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You are looking straight down on a magnetic compass that is lying flat on a table. A wire is stretched horizontally under the table, parallel to and a short distance below the compass needle. The wire is then connected to a battery so that a current flows through the wire. This current causes the north pole of the compass needle to deflect to the left. The questions that follow ask you to compare the effects of different actions on this initial deflection. If the wire is lowered farther from the compass, how does the new angle of deflection of the north pole of the compass needle compare to its initial deflection?With the wire back at its initial location, you connect a second identical battery in series with the first one. When you close the switch, how does the new angle of deflection of the north pole of the compass needle compare to its initial deflection?
q1. a guitar string is 75 cm long and has a mass of 3.8 g. from the bridge to the support post l is 60 cm and the
A 0.245 kg ball is thrown straight up from 2.20 m above the ground. Calculate the total work done by the force of gravity during that time
A 2.18-m-long diving board of mass 13.2 kg is 3.00 m above the water. It has two attachments holding it in place. what are the forces acting on the two attachments
A 2.0kg solid cylinder (radius = 0.10m , length = 0.70m ) is released from rest at the top of a ramp and allowed to roll without slipping. When the cylinder reaches the bottom of the ramp, what is its total kinetic energy
In a television set the power needed to operate the picture tube comes from the secondary of a transformer. Find the turns ratio Ns/Np of the transformer
A 12.0 m long conveyor belt, inclined at 40.0°, is used to transport bundles of newspapers from the mailroom up to the cargo bay to be loaded on to delivery trucks. Each newspaper has the mass of 1.00 kg, and there are 26 newspapers per bundle. Concl..
Hakeem throws an 8.00 g ball straight down from a height of 2.0 m. The ball strikes the floor at a speed of 7.40 m/s. What was the initial speed of the ball? Assume that air resistance is negligible.
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
Two very large parallel plates are oppositely and uniformly charged. The field between the plates is 1.7×106N/C, How much total charge is on each plate if they are 18.0cm on a side
Running into the train at that speed would severely damage both train and passengers. How far does the train then travel while being slowed to a stop
Superheated water vapor initially at 15 bar and 440°C is cooled at constant pressure to a saturated vapor state and is then cooled at constant volume to a final temperature of 120°C, Determine the quality of the water at the final state
A Carnot engine operates between the temperatures 420K and 300K, How much heat is discarded to the cold reservoir as this work is done
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