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The tension in a 2.5-m-long, 1.2-cm-diameter steel cable (? = 7800 kg/m3) is 850 N. What is the fundamental frequency of vibration of the cable?
A large electromagnet coil is connected to a 118 -Hz ac source. The coil has a resistance 450 ohms, What is the inductance of the coil
An AM radio transmitter broadcasts 47.0 kW of power uniformly in all directions, What is the maximum electric field strength at this distance
An automobile has a mass of 1600 kg and a velocity of 22.2 m/s. It makes a rear-end collision with a stationary car whose mass is 2310 kg. Find the impulse that acts on the skidding cars from just after the collision until they come to a halt
The balloon is filled with helium at a density of 0.181 kg/m3. At this density the balloon is spherical with a radius of 0.400 m. If the filled balloon is fastened to a vertical line,
A box is hanging from a chain having a mass of 60 kg. The box has a mass of 78 kg. Find the tension in the top of chain and the bottom of the chain.
A 82 person sits on a 3.8 chair. Each leg of the chair makes contact with the floor in a circle that is 1.4 in diam. Determine out the pressure exerted on the floor by each leg of the chair, Assume the weight is evenly distributed.
A piston of radius r = 0.05 m has a stroke within a cylinder of S = 0.2 m. At the bottom of the stoke the cylinder fills with air at T1 = 22.4 C and a pressure of P1 = 100 kPa. What would be the length of the cylinder
A particle lives for a short time before breaking apart into other particles. According to this hypothetical person, how far does the laboratory move before the particle breaks apart
A plane sinusoidal electromagnetic wave in air has a wavelength of 3.90cm and an E field amplitude of 1.40V/m. What is the magnetic field amplitude?
in a wild shot rashad flings a pool ball of a mass of a .7m high pool table and the ball hits the floor with a speed
Two narrow slits 54?m apart are illuminated with light of wavelength 510nm, What is the angle of the m=2 bright fringe in radians
Water at 20.0 °C is sprayed onto 0.236 kg of molten gold at 1063 °C (its melting point). What is the minimum mass of water that must be used
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