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A rectangular loop with dimensions (horizontal 0.25 m) x (vertical 0.575 m) is suspended by a string and the lower horizontal section of the loop is immersed in a magnetic field. If a current of 3.5 A is maintained in the loop, what is the magnitude of the magneticfield required to produce a tension of 0.066 N in the supporting string? Assume gravitational force is negligible. Answer in units of T.
A 50-g block of an unknown material is at 530°C. It is dropped into a thermally insulated cup containing 0.07L of water at 20°C. If the temperature of the compound rises to 50°C, what is the specific heat of the unknown material?
the capacitor has a cross-sectional area a and a distance between plates of 10 mm. a battery with voltage of 30 volts
A single-turn square wire loop 5.0 cm on a side carries a 450 mA- current. What is the magnetic dipole moment of the loop
The average speed of the atoms in a 3.9 g sample of helium gas is 607 m/s. Estimate the thermal energy of the sample
A condensate of open strings with both ends attached to the same D-brane can be equivalent to a displacement of the D-brane with no open string condensate. A solution to the D-brane Born-Infield action gives rise to a semi-infinite string extension w..
The Moon and Earth are bound together by gravity. If, instead, the force of attraction were the result of each having a charge of the similar magnitude but opposite in sign, discover the quantity of charge that would have to be placed on each to prod..
A 9 g ice cube at -10°C is placed in a lake whose temperature is 17°C. Calculate the change in entropy of the cube-lake system
The rms value of the electric field in an electromagnetic wave is Erms = 480 V/m. Find the average energy density
An ocean liner leaves New York City and travels 18.0° north of east for 232 km. How far east and how far north has it gone? In other words, what are the magnitudes of components of the ship's displacement vector in the following directions.
A sphere with mass 0.3 kg and radius 0.05 cm is rolling without slipping along a horizontal surface at a speed of 10 m/s. What height does the sphere come to rest
Find the speed of mass m1 before the collision. Find the speed of mass m1 and m2 after the collision. Find the relative change of kinetic energy during the collision (DK/Ki).
The owner of a van installs a rear-window lens that has a focallength of -0.298m. When the owner looks out through the lens at a person standingdirectly behind the van, the person appears to be just 0.241 m from the back of the van, and appears to..
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