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You are hanging with your hands on a horizontal conducting wire that is immersed over a distance of 1m in a horizontal, transverse magnetic field of 10T. How much current is needed in the wire to hold you up in the field. (Your mass is 70kg. Neglect the mass of the wire.)
A 0.410kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 22.0N/m . The block rests on a frictionless surface. A 6.00×10^2kg wad of putty is thrown horizontally at block, hitting it with a s..
a 1.5-kg object is attached to an ideal massless spring with a spring constant of 20 nN/M OSCILLATES on horizontal, Find the frequency of the oscillations
A conducting sphere of radius 23.0 cm has an unknown positivecharge distributed uniformly over its surface. The strength of theelectric field at a point 0.480 m from the centerof the sphere is 12.0 N/C. What is the charge?
A wave is moving along a string. The equation giving the displacement y of a point at coordinate x and at time t has the form y = 0.2cos(4pi(x)/5-20pi(t)), Calculate the frequency and the speed(m/s) of the wave
An electric motor rotating a workshop grinding wheel at a rate of 9.20x101 rev/min is switched off. How long does it take for the grinding wheel to stop
Two long parallel wires carry currents of 3.71 A and 6.47 A. The magnitude of the force per unit lengh acting on each wire is 6.85 × 10-5 N/m
During the initial charge of a capacitor up to its max charge Vo, the initial energy stored in the capacitor is 1/2(CVo)^2 . Show mathematically that this energy is equal to the total energy dissipated as heat in the resistance through which discharg..
A certain lightbulb filament when hot has a resistance of 205 ?. The potential difference across the filament at a certain instant is standard household voltage, 120 V. What current is flowing through the bulb at that time
In order to calculate the number of ways of arranging a given amount of energy in a tiny block of copper, How many atoms are in the copper block
In a loop-the-loop ride a car goes around a vertical, circular loop at a constant speed. The car has a mass m = 222.0 kg and moves with speed v = 16.16 m/s. What is the minimum speed of the car
A saturated solution of strontium hydroxide is prepared in the excess solid Sr(OH)2 is allowed to settle. A 25.0mL aliquot of the saturated solution is withdrawn and transfer to an Erlenmeyer flask
A 65 gice cube at 0°C is heated until 60g has become water at 100°C and 5.0 g has become steam at 100°C. How much energy was added to accomplish the transformation
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