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A 150 turn circular coil has a diameter of 2.4 centimeter and a resistance of 60 ohm. The normal to the plane of the coil is initially parallel with a uniform magnetic field of magnitude 1.3 T. The direction of the coil is then reversed in 0.1 second in such a way that the Faraday's law induced emf is constant during the turn. Neglecting the (very short) time to turn the current on and off, evaluate what the current in the coil?
An extension cord made of two wires of diameter 0.129 cm (no. 16 copper wire) and of length 2.4 m (8 ft) is connected to an electric heater which draws 13.5 A on a 120-V line
The induced emf is a single loop of wire has a magnitude of 2.36 Vwhen the magnetic flux is changed from 0.912 T X m2 to0.233 T X m2. How much time is required for this changein flux?
While waiting for your plane to take off, you suspend your keys from a thread and set the resulting pendulum oscillating. It completes exactly 86 cycles in 1 minute. You repeat the experiment as the plane accelerates down the runway, and now discover..
A body is traveling at3.0 m/s along the positive directionof an x axis; no net force acts on the body. What is the speed of the forward part
A force of 29.73 N is applied tangentially to a wheel of radius 0.34 m. This force causes an angular acceleration of 1.20 rad/s2. What is the rotational inertia of the wheel
A coffee-maker (11 ?) and a toaster (16 ?) are connected in parallel to the same 120-V outlet in a kitchen. How much total power is supplied to the two appliances
A small device based on the confinement of a proton in a 1 dimensional box is found to have a ground (i.e. n = 1) level energy of 16.9 keV. Determine the width of the box
The middle C string on a piano is under a tension of 944N. The period and wavelength of a wave on this string are 3.82 ms, calculate the linear density of the string
What is magnitude of the force that a concrete support exerts on the bridge at each end. The cloth exerts a friction force of 0.100 N on the mug and the cloth is pulled with a constant acceleration of 3.00 m/s.
Suppose after charging a 4 µF capacitor to 8 V, you connect it to the second uncharged capacitor of 7 µF. What voltage will your voltmeter read across the second capacitor
Water flowings through a 2.1 cm diameter pipe can fill a 400 L bathtub in 5.2 min. What is the speed of the water in the pipe
A sealed container contains 7 moles of neon gas at STP. Estimate the number of neon atoms having speeds in the range from 188.0 m/s and 192.0 m/s
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