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You need to prepare a 0.103mm diameter tungsten wire with a resistance of 2.05 kQ. How long must the wire be? The resistivity of tungsten is 5.62x10^-8 Qxm.
A narrow glass tube, open at one end, closed at the other, is 40cm long. Determine the frequency of the moving sound source
A mechanic jacks up the front of a car to an angle of 8.0 degrees with the horizontal in order to change the front tires. Calculate the magnitude of the torque excerted by the jack
A shell is fired at an angle of 20 degree above the horizontal at a velocity of 200 m/s a) what is the range. b) What is its velocity at highest point of the trajectory.
A 210 km long high-voltage transmission line 2 cm in diameter carries a steady current of 960 A. If the conductor is copper with a free charge density of 9.0 x10^28 electrons per cubic meter, how many years does it take one electron to travel the ..
A wheelchair athlete is training on a stationary ergometer. Her wheel's angular velocity is 3 rev/s and diameter is 80.0 cm. What is the linear velocity at the wheel's circumference
A 78 kg circus performer jumps from a 4.20 m height onto a trampoline and stretches it downward 0.3m. suppose that the trampoline obeys Hooke's law.
A block of wood of mass 4.85 kg rests on a horizontal frictionless surface. find the velocity of the wood after the bullet has passed through
A 60.0-kg runner expends 335 W of power while running a marathon. determine the volume of bodily fluid (assume it is water) lost per hour
A tennis ball initially moves with a velocity of 26.0 m/s horizontally to the right. A tennis racket strikes the ball, giving it a velocity of 26.0 m/s to the left. Find the initial velocity of the racket
End A of the bar AB rests on a frictionless horizontal surface, and end B is hinged. A horizontal force vec F of magnitude 107 {rm N} is exerted on end A. You can ignore the weight of the bar. What is the vertical component of the force exerted by..
A 9 turn coil 1.80 in diameter is rotated at 11 about an axis perpendicular to a uniform magnetic field. A voltmeter connected to the coil through rotating contacts reads a peak value of 340.
What is the resistance of a lightbulb that uses an average power of 55.0 W when connected to a 60.0 Hz power source having a maximum voltage of 180 V
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