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A circular loop of wire of radius r = 0.32 m and resistance R=2.5ohms is placed in a uniform magnetic field that is perpendicular to the plane of the loop and initially directed in to the page. The field varies with time as Bz = -4T - (5.6 T/S )t +(2.2 T/S2) t2. Discover the magnitude and direction of the current in the loop at t = 1s and t = 2s(where the positive Z axis is out of the page )
A wave on a string is described by the equation y = (4.2 mm)cos(3000t 0.45x) where t is measured in s and x is measured in mm
A 0.8-kg mass is hanging from a spring with spring constant 12 N/m. Then the mass is displaced from the equilibrium by 2 cm, What is the resulting frequency of the oscillation
A disk with mass m = 8.5 kg and radius R = 0.35 m begins at rest and accelerates uniformly for t = 18.8 s, to a final angular speed of ? = 28 rad/s. What is the moment of inertia of the disk?
A very thin bubble is floating in air. If the bubble strongly reflects green light (? = 520 nm), what is the minimum possible thickness of the bubble
A solid iron sphere and a solid lead sphere of the same size are each suspended by strings and are submerged in a tank of water. (Note that the density of lead is greater than that of iron.) Which of the following statements are valid?
Light behaves primarily as a wave when it...
A scuba diver is 48 m below the surface of a lake, where the temperature is 5°C. He releases an air bubble with a volume of 17cm3. The bubble rises to the surface.
acA block lies on a plane which is inclined at 22 deg to thehorizontal. The coefficient of kinetic friction between blockand plane is %u03BCk = 0.17. compute the acceleration of the block
A stone is thrown diagonally upward with a vertical velocity of 23m/s and lands 83m away at the same height. What was the horizontal velocity
What is the magnitude of the electric field at a point 0.45cm away from a point charge of +2.0pC? What is the direction of the electric field
a car mass 200 kg moving at 30 m/s is braked suddenly, withconstant braking force of 10000 N. How far does the car go before stopping
A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of the lake. Determine the length of the lake
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