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A closely wound rectangular coil of 90 turns has dimensions of 20.0cm by 44.0cm. The plane of coil is rotated from a position where it makes an angle of 32.0 degrees with a magnetic field of 1.20T to a position perpendicular to the field. The rotation takes 7.00*10^-2s. What is the average emf induced in the coil?
Standing on ground 3.5 from the wall of a building, you want to throw a package from your 1.6 shoulder level to someone in a second-floor window 4.5 above the ground.
A positive point charge of magnitude 2.5 μC is at thecenter of an uncharged spherical conducting shell of inner radius60 cm and outer radius 90 cm. Find the electric field everywhere
Two girls decide to jump off a diving board. Katherine steps off the diving board. Anna runs straight off the diving board so that her initial velocity is solely horizontal. They both leave the diving board at the same time. Which one lands in the..
The maximum distance from Earth to the Sun (at our aphelion) is 1.521 x 10^11 m and the distance of closest approach (at perihelion) is 1.471 x 10 ^11 m. Assume the Earth's orbital speed at perihelion is 3.027 x 10 ^ 4 m/s. (overlook the effect of th..
A meterstick lies along the optical axis of a convex mirror of focal length -48 cm, with its nearest end 63 cm from the mirror. How long is the image of the meterstick
A small fan pulls the air in and forces it through the resistorswhere it is heated. If the density of the air is 1.2 kg/m3 at theinlet and 1.05 kg/m3 at the exit, determine the percent increase inthe velocity of the air as it flows through the dry..
You decide to determine the depth of a tank of water using the sun's light. With the sun overhead, the tank's bottom is lit, Approximately how deep is the tanks
A stunt man whose mass is 70 kg swings from the end of a 3.10 m long rope along the arc of a vertical circle. Assume that he starts from rest when the rope is horizontal; find the tensions in the rope that are necessary to make him follow his circ..
The accepted value of the specific gravity of a rectangular metalblock is 2.70. What is the relative error of the determination
A thin layer of magnesium fluoride (n = 1.38) is used to coat a flint-glass lens (n = 1.61). What atleast thickness should the magnesium fluoride film have if the reflection of 669 nm light is to be suppressed? suppose that the light is incident a..
a 0.25kg block is placed on a light vertical spring k5 x 103nm and pushed downwards compressing the spring and
The total energy of a particle is 3.97 times its rest energy. The mass of the particle is 2.8 × 10^-27 kg. With what speed is the particle moving and what is the particle's momentum
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