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Q. Four very long wires are directed perpendicular to the plane. The points where these wires cross the plane of the drawing form a square of edge length 0.4 m, and each wire carries a current of magnitude 8 A. Find the magnitude of the magnetic field at the center of the square (i.e., at the origin).
Q. A hair dryer draws a current of 10.7 A.
a.) How much charge passes through the hair dryer in 3.5 min?
b.) How many electrons does this represent?
Find out the magnitude of the amount by which the potential difference across the plates changes.
A helicopter is ascending vertically with a speed of 4.50 m/s. At a height of 195 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground.
Chromium is produced by reacting its oxide with aluminium. If 354 g of Cr2O3 and 158 g of Al react to form 204 g of Al2O3, how many grams of Cr are formed.
What is Horizontal angle of projectile
A 120 kg mail bag hangs by a vertical rope 4.00 m long. A postal worker then displaces the bag to a position 2.10 m sideways from its original position, always keeping the rope taut.
What is acceleration of the elevator
A barge of mass 5x 10^4 kg is pulled along the Erie Canal by two mules, walking along towpaths parallel to the canal on either side of it. The ropes harnessed to the mules make angles of 45° to the canal.
100 g ball of clay is thrown horizontally with a speed of 13m/s toward a 900g block resting on a frictionless surface. It hits the block and sticks. The clay exerts a constant force on the block during the 7 ms it takes the clay to come to rest re..
An 11g bullet is fired into an 11kg wood block that is at rest on the wood table. The block, with the bullet embedded, slides 5.11 across the table. The coefficient of kinetic friction for wood sliding on wood is 0.25.
find the distance along the ground, measured from a point directly beneath the point of release, to where the package hits the earth.
If the speed of the wave is 10 percent less in the organ than in the medium above, determine the depth of the tumor below the organ's surface.
A vertical scale on a spring balance reads from 0 to 160 N. The scale has a length of 12.5cm from the 0 to 160 N reading. A fish hanging from the bottom of spring oscillates vertically at the frequency of 2.30 Hz. ignoring the mass of the spring, wha..
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