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Suppose a straight 1.65mm diameter copper wire could just "float" horizontally in air because of the force due to the Earth's magnetic field B? which is horizontal, perpendicular to the wire, and of magnitude 6.6x10-5T.
A: What current would the wire carry?
B: Is this feasible? Why or Why Not?
The force vector A has a magnitude of 98.0 newtons (N) and points due east. The force vector B has a magnitude of 111 N and points 71.1 ° north of east. Find the (a) magnitude and (b) direction of A - B. (Give the direction as a positive angle with r..
a positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. what is the system's total kinetic energy
A uniform brass disk of radius R and mass M with a moment of inertia I about its cylindrical axis of symmetry is at a temperature T = 37 °C. Determine the fractional change in its moment of inertia
a single conducting loop of wire has an area of .2 x 10-2 m2 and a resistant of 110o. perpendicular to the plan of the
ower transmission lines often use a form of electric current called alternating current, but in many regions, such as the Province of Quebec, high-voltage direct-current lines are used instead. What is the power loss due to resistance in the line
A motorist suddenly notices a stalled car and slams on the brakes, negatively accelerating at 6.2. How fast was the motorist going when the brakes were first applied
Two masses of 27 kg and 18 kg are suspended by a pulley that has a radius of 12 cm and a mass of 9 kg, Determine the speeds of the two masses as they pass each other
A movie stuntwoman drops from a helicopter that is 29.0 above ground and is moving with a constant velocity whose components are 8.00 upward and 18.0 horizontal and toward south. You can ignore air resistance.Where on the ground (relative to the p..
q1. kelli weighs 417 n and she is sitting on a playground swing that hangs 0.44 m above the ground. her mom pulls the
Find the distance(in μm) between the plates of a parallel plate capacitor if, in the dielectriccompletely filling that region, an electric field of magnitude 67.5MV/m gives a potential difference of 34.5 kV between the plates
An alpha particle, which is a helium nucleus, has a mass of 6.64*10^-27 kg. It is travleing horizontally at 42.3 km/s when it enters a uniform, What is the diameter of the path followed by the alpha particle
A grindstone of radius 4.0 m is initially spinning with an angular speed of 8.0 rad/s. The angular speed is then increased to12 rad/s over the next 4.0 seconds. Suppose that the angular acceleration is constant. during how many revolutions does the g..
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