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A particle with radius r=5i+4k+3k has a force of F=3i-8j+5k acting on it.
a) What is the torque in unit vector notation about the origin?
b) What is the value of the resulting torque vector? No credit can be given to this if you use Fxr=FrCos(theta).
A fan at a rock concert is 35m from the stage, where sound intensity level is 125 dB. Her eardrums have a diameter of 8.07mm. How much energy is transferred to each eardrum in one second? (Distance from the speaker to the edge of the stage is 1 m...
Draw a free body diagram for each situation and find the magnitude of the larger of the two individual forces in units of N. Find out the magnitude of the smaller of the individual forces in units of N.
A net is positioned a horizontal distance of 52.0 m from the cannon. Explain at what height above the cannon should the net be placed in order to catch the daredevil?
Light of 546 nm wavelength is incident on a cesium surface that has a work function of 1.91 eV. find the threshold wavelength
Find the action variable for a ball with speed v bouncing between two elastic walls a distance d apart. Find the angle variable
the time constant of an RL circuit with L=25mH is six times larger than the time constant of an RC circuit with C=55uF. Both circuits have the same resistance R. What is the time constant of the RC circuit?
An object is solid throughout. When the object is completely submerged in ethyl alcohol, its apparent weight is 15.0 N. What is the volume of the object
At the end of the run, she is 175 m away from the starting point at an angle of 15.0° north of west. Illustrate what were the direction and length of her second displacement? Use graphical techniques.
q1. charge is scattered uniformly throughout a long cylindrical shell of inner radius r and out radius 2r. at what
A bucket of water is whirled in a vertical circle of radius 90cm,What is the least speed that will keep the water from falling out.
A spherical drop of water carrying a charge of 28 pC has a potential of 505 V at its surface (with V = 0 at infinity). What is the radius of the drop
A 12.6 V battery is in a circuit with a 30.0 mH inductor and a 0.150 resistor, as in Active Figure 20.27. The switch is closed at t = 0. Find the current after one time constant has elapsed
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