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1. In the figure, a 6.00-m-long, uniform beam is hanging from a point 1.00 m to the right of its center. The beam weighs 140N and makes an angle of 30.0o with the vertical. At the right-hand end of the beam a 100-N weight is hung; an unknown weight w hangs at the other end. If the sytem is in equilibrium, what is w? (You can ignore the thickness of the beam)
2. If the beam makes, instead, an angle of 45.0o with the vertical, what is w?
Through a time interval of exactly one period of vibration of a tuning fork, the emitted sound travels a distance: Equal to the length of the tuning fork, Equal to twice the length of the tuning fork
A car travels along a straight line at a constant speed of 58.5 mi/h for a distance d and then another distance d in the same direction at another constant speed.
A copper wire of length 23.0 cm is in a magnetic field of 0.310 T. If it has a mass of 16.0 g, What is the minimum current through the wire
At low frequencies the dielectric constant of a medium is 4.4. The speed of light is 2.998 × 108 m/s. Find the speed of low-frequency radio waves in the medium
An object of mass m = 2.3 g and charge Q = +48 µC is attached to a string and placed in a uniform electric field that is inclined at an angle of 30.0° with the horizontal. Find the magnitude of the electric field
A 0.19 kg meterstick has a 0.17 kg mass at its 40 cm mark and a 0.45 kg mass at the 85 cm mark. Where should the fulcrum be so the meterstick is balanced
7.85 g of nitrogen gas at an initial pressure of 3.87 atm and at 16°C undergo an isobaric expansion until the volume has doubled. What is the gas volume after the expansion
Find the angular acceleration - What is the torque on the rod when it makes an o angle q with the vertical - Find the kinetic energy of a solid sphere of mass 0.5 kg and radius 10 cm that rolls without slipping on level ground
Total required annual electrical energy output from the wind farm =120 TJ Max number of turbines for which there is space on the farm =20.
A small spherical insulator of mass 8.00 x 10-2 kilograms and a charge 0.600 uC is hung by a thin wire of negligible mass. Find the angle
200mH inductor with 78 ohm resistance is connected in series to a 16 u F capacitor and a 60 Hz Vrms = 25 V source. Calculate the rms current
An AC generator supplies an rms voltage of 115 V at 50.0 Hz. It is connected in series with a 0.500 H inductor, What is the rms current through the resistor
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