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Question: A 45 turn coil of radius 5.4 cm rotates in a uniform magnetic field having a magnitude of 0.55 T. If the coil carries a current of 30 mA, find the magnitude of the maximum torque exerted on the coil.
A crate rests on the flatbed of a truck that is initially traveling at 15 m/s on a level road. what is the minimum coefficient of friction between the crate and the truck that is required to keep the crate from sliding
Dan hits a hockey puck, giving it an initial velocity of 3.0m/s. If the coefficient of kinetic friction between ice and puck is0.020, How far will the puck slide before stopping
The drawing shows a skateboarder moving at 6.78 m/s along a horizontal section of a track that is slanted upward by 51.6 ° above the horizontal at its end, find the maximum height H to which she rises above the end of the track
A 3.1-cm-diameter parallel-plate capacitor has a 2.2mmspacing. The electric field strength inside the capacitor is 1.3×105V/m. What is the potential difference across the capacitor
in one fusion research program a pellet of hydrogen isotopes will be heated and compressed with intense lasers. if a
A 300-kg elevator is raised with a constant speed through a vertical distance of 100 m in two minutes. What is the useful output power of the hoist
A train accelerates at 2.97 m/s2 from rest to a steady speed in 34.27 s. What is the total distance traveled
The earth orbits the sun once a year (3.16 x 10^7 s) in a nearlycircular orbit of radius 1.50 x 10^11 m. With respect to the sun,determine the magnitude of the earth’s centripetal acceleration.
a) calculate E1' and E2', the lorentz transformations of E1 and E2 b) calculate the distances E1E2 and E1'E2' with the four dimensional scalar product of the time position vector within itself
The gravitational force exerted on a baseball is 2.14 N down. Through what distance does it move before its release
A tiny ball of mass 0.425 g is suspended by a thread of negligible mass in a horizontal electric field of 400 N/C. what will be the deflection angle of the string
The leaves of a tree lose water to the atmosphere via the process of transpiration. What is the speed of the sap flowing in the vessels
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