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A surveyor is using a magnetic compass 6.5 m below a power line in which there is a steady current of 100 A. What is the magnetic field in microteslas at the site of the compass due to the power line?
A horizontal beam of electrons initially moving at 4.0x10^7 m/s is deflected vertically by the vertical electric feild between oppositely charged parallel plates. the magnitude of the field is 2x10^4N/C. What is the verticle deflection d of the el..
The loaded cab of an elevator has a mass of 2.8 x 103 kg and moves 223 m up the shaft in 26 s at constant speed. Explain at what average rate does the force from the cable do work on the cab?
What is the range of wavelengths for FM radio (88 MHz to 108 MHz) and AM radio (535 kHz to 1700 kHz)? (answer: for FM: 2.78m to 3.4m, for AM: 176m to 561m)
A concave makeup mirror is designed so that a person 28 cm in front of it sees an upright image magnified by a factor of two. What is the radius of curvature of themirror?
n = 3.24 mol of Hydrogen gas is initially at T = 357 K temperature and pi = 2.79×105 Pa pressure. How much heat did the gas emit
q1. a hotel elevator ascends 170 m with a maximum speed of 5.9 ms. its acceleration and deceleration both have the
water vapor consists of nonlinear polyatomic molecules so all three rotational modes are excited at ordinary
A block of mass 2.7 kg being released from rest on a 1m frictionless plane, inclined at an angle of 40 degree. The block sided down the inclined and struck second block mass of 3.7 kg. If the two blocks stick together, with what speed would they move..
An Olympic runner is at the starting gate and hears the starting gun, Using only acceleration, ai, and time, tr, write an expression for the runner's final speed, vr, when he crosses the finish line
A dockworker applies a constant horizontal force of 88.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. What is the mass of the block of ice
The potenial energy for the force between two atoms in a diaomic molcules a-b has he approximate form v(x)= (-a/x^6 )+ (b/x^12), find the frequancy for small vibration
I place a 250 g mass on a spring. When it has finished oscillating, the spring has extended from 30 cm to 55cm. How do I calculate how far it has extended from its equilibrium? For the 250 g mass, what is the force exerted by gravity on this mass? Wh..
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