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Make a drawing of a metal rod that has length 12cm and a total mass of 70g including two metal loops at both ends, which go around two metal poles. The rod is in good electrical contact with the poles but can slide freely up and down. The metal poles are connected by wires to a battery, and a 5A current flows through the rod. A magnet supplies a large uniform magnetic field B in the region of the rod, large enough that you can neglect the magnetic fields due to the 5A current. The magnetic field is oriented so as to have the maximum effect on the rod. The rod sits at rest 4cm above the table. What is the magnitude of the magnetic field in the region of the rod?
A 160 m wide river flows due east at a uniform speed of 4.05 m/s. A boat with a speed of 7.2 m/s relative to the water leaves the south bank pointed in a direction 39o west of north. What is (a) magnitude and (b) direction of the boat's velocity r..
A 200 gram block, attached to the end of an ideal spring (horizontal) with force constant k = 70 N/m, What is the total mechanical energy of the block
Two point charges 3.0cm apart have an electric potential energy -130?J, find the lesser and greater charge
Two point charges are on the y-axis, one of magnitude 3.0 ? 10-9 C at the origin and a second of magnitude 6.0 ? 10-9 C at the point y = 25 cm
The body contains many small currents caused by the motion of ions in the organs and cells. how large is the current in the heart
You bike at 10.5 m/s directly away from your neighbor's trumpet sound and toward the sound of another neighbor's trombone, What frequency is the trombonist producing
Donald Duck and his nephews manage to sink Uncle Scrooge's yacht (m = 5021 kg), which is made of steel (? = 7770 kg/m3). How many balls are required to float the ship
A plane leaves the airport in Galisto and flies 165 at 68.0 east of north and then changes direction to fly 230 at 48.0 south of east, after which it makes an immediate emergency landing in a pasture.
trumpet creates a sound intensity level of 1.23 x 10^2 dB at a distance of 0.80 m. What is the sound intensity of a trumpet
find the lowest frequency that make constructive interference.
A student sees a newspaper ad for an apartment that has 1630 square feet (ft2) of floor space. How many square meters of area are there
Four equal charges of +4.9×10-6 C are placed on the corners of one face of a cube of edge length 7.0 cm. calculate the magnitude of the force on the charge
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