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In 0.2s, a coil of die with 50 loops experiences an average induced emf of 9v due to a changing magnetic field perpendicular to the plane of the coil. The radius of the coil is 10 cm and the initial strength of the magnetic field is 1.5T. Assuming that the strength of the field decreased with time,
(a) what is the final strength of the field?
(b) If the field strength had, instead increased what would its final value have been?
(c) Explain a method whereby you could, in principle, tell whether the field was increasing or decreasing magnitude.
A wire 6.10m long with diameter of 2.00mm has a resistance of 0.0280?. Find the resistivity of the material of the wire
What is the flux of Zn moving down the rod? Write down all your assumptions (hint: you will need to look up the density of copper. You do not need to account for the variation in density with alloy composition). Clarify what the boundary conditions w..
a 35 kg uniform ladder is leaned against a building. the 5 m tall ladder makes an angle of 60 degrees with the
Find the speed of the car when brakes were applied.
q1. a ski jumper has 1.2 acute 10 j of potential energy at the top of the ski jump. the friction on the jump slope is
A very thin sheet of glass (n=1.5) floats on the surface of water (n=1.33). When illuminated with white light at normal incidence, What is the thickness of the glass
it accelerates with a constnat acceleration of 2.00 m/s^2 until its engines stop at an attitude of 200 m. the rocket continues move in free fall until its reaches the ground. Illustrate what is the total time the rocket is in the air?
If it starts 4.70m from the lower edge of the roof, how fast will the toolbox be moving just as it reaches the edge of the roof if the kinetic friction force on it is 21.0N
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During a fun run a girl runs for 12 s moving 2.7 m/s. She then accelerates at 0.5 m/s^2 over the next 25 m. she then runs at her new speed for 10s. What distance did she cover during the entire period?
A copper wire has a square cross section 2.7 on a side. The wire is 3.8 long and carries a current of 4.0 . The density of free electrons is 8.5*10^28 m^-3.
A long wire is known to have a radius greater than 4.0 mm and to carry a current that is uniformly distributed over its cross section. what is the radius of the wire
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