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A horizontal wire is hung from the ceiling of a room by two massless strings. The wire has a length of 0.10 m anda mass of 0.008 kg. A uniform magnetic field ofmagnitude 0.075 T is directed from the ceiling to the floor. When a current of I = 26 A exists inthe wire, the wire swings upward and, at equilibrium, makes anangle φ with respect to the vertical, as the drawingshows. Find (a) the angle and (b)the tension in each of the two strings.
A proton having an initial velocity of 18.1i hat bold Mm/s enters a uniform magnetic field of magnitude 0.300 T with a direction perpendicular to the proton's velocity, Determine the distance the proton traveled in the field
A 0.29 micro farad capacitor is connected across an AC generator that produces a peak voltage of 10.4 V. What is the peak current through the capacitor
An object known to be made of copper (p=8.89 g/cm^3) and aluminum (p=2.7 g/cm^3) "weighs" 25 g in air but only 20 g in water. How much copper is in the object
A uniformly charged conducting sphere of 1.5 m diameter has a surface charge density of 11 µC/m2. Find the net charge in coulombs on the sphere
At the end of her routine, an ice skater spins through 8.00 revolutions with her arms always fully outstretched at right angles to her body.
Olympic diver Matthew Mitcham springs upward from a diving board that is 3.10 m above the water. Determine his maximum height above the water
An air conditioner operating between 86°F and 72°F is rated at 4000 Btu/h cooling capacity. What horsepower is required of the air conditioner motor
Delivery trucks that operate by making use of energy stored in a rotating flywheel have been used in Europe. What is the kinetic energy of the flywheel after charging
A 68.1-kg basketball player jumps vertically and leaves the floor with a velocity of 1.92 m/s upward. (Take upward as positive and forward as positive.), What impulse does the player experience
A grinding wheel of radius 0.280 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. Find the magnitude of the friction force
A small piece of dust of mass m = 1.2 g travels horizontally through an electric air cleaner in which the electric field is 472 N/C, What is the charge of the dust particle
A circuit consists of a resistor in series with an inductor and an ac generator that supplies a voltage of 115 V. Find the average power delivered in the circuit
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