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A 4.2 m long uniform beam is supported by a cable at its center. A 69 kg steelworker stands on one end of the beam, and a bucket of concrete is suspended from a point 76 cm from the beam's center, on the other side of the center from the steelworker. What's the mass of the bucket and concrete?
A wild horse starts from rest and runs in a straight line 29°north of west. After 39 s of running in this direction, the horse has a speed of 13 m/s. What is the magnitude of the horse's average acceleration?
An ac generator with a frequency of 1.14kHz and an rms voltage of 20.2V is connected in series with a 1.80killo ohm resistor and a 320mH inductor. What is the average power consumed by this circuit
A light bulb is wired in a series with a 137 ohm resistor, and they are connected across a 120 Volt source. Determine the two possible resistances of the light bulb
A solenoid 2.00 cm in diameter and 20.0 cm long has 750 turns and carries a current of 10.0 A. Calculate the magnetic flux through the circular cross-sectional area of the solenoid.
Find the maximum and minimum values of v (t), the value of β, and then sketch the waveform.- Generate the waveform in Multisim.
a 100W light bulb connected to a 12.0 V source experiences a voltage surge that produces 14.0V for a moment. By what percentage does its power output increase
Why does the oscillation of neutrinos directly imply that they must have a nonzero mass, since the passage of one flavor to another can only occur in massive particles? And What are the cosmological implications of these oscillations?
If the only forces acting on a 2.0-kg mass are N and N, what is the magnitude of the acceleration of the particle
A worker stands still on a roof sloped at an angle of 21° above the horizontal. He is prevented from slipping by a static frictional force of 400 N. Find out the mass of the worker.
A listener increases his distance from a sound source by a factor of 3.62. what is the change in the sound intensity level in dB
A new record for running the stairs of the Empire State Building was set on February 3, 2003. what was his average power output during the climb
An object of mass m=.200 kg is attached to a spring which is vibrating on a horizontell frictionless table. The spring has a spring constant k= 545 N/m.
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