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An athlete at the gym holds a 1.0 kilogram steel ball in his hand. His arm is 62 centimeter long and has a mass of 4.0 kilogram. Find the magnitude of the torque about his shoulder if he holds his arm in each of the following ways?
(a) Straight out to his side, parallel to the floor
Nm
(b) Straight, but 45 degree below horizontal
A motorboat heads due east 13.3 m/s across a river that flows toward the south at a speed of 4.5m/s. Illustrate what is the magnitude of the resultant velocity relative to an observer on the shore?
The water level in a vertical glass tube 1.150 m long can be adjusted to any position in the tube. What is the greatest depth of water for which there will be resonance in the air in the tube
If the wire is heated to 40.0°C while the 7.0-V potential difference is maintained, what is the resulting current in the wire
Long parallel wires separated by 7.5 cm carry 3.3 Amperes each in opposite directions. What magnetic force per length acts on the wires
The atomic bomb that was dropped on Nagasaki in 1945 killed 140,000 people, How much mass was converted to energy when this took place
The block of mass M slides back along the horizontal surface with a coefficient of kinetic friction mk and eventually comes to a rest. In terms of v4, how far does the block slide during this final leg of its journey
Two traveling sine waves, identical except for a phase difference of phi, What is the phase difference between the two waves
One afternoon, a couple walks five-sixthsof the way around a circular lake, the radius of which is1.70km. What are the magnitude and direction (relative to due east) ofthe couple's displacement
The hammer throw is a track-and-field event in which a 7.30-kg ball (the hammer) is whirled around in a circle several times and released. It then moves upward on the familiar curved path of projectile motion and eventually returns to the ground s..
A grating with 504 lines/mm is illuminated with light of wavelength 305 nm. What is an angular separation between the two lines formed in order m = 2.
A parallel-plate capacitor has square plates of edge length1.9 cm and a plate spacing of0.030 mm. If the gap between the plates is a vacuum, what is the capacitance?
A solid, square pinewood raft measures 3.0 m on a side and is 2.30 m thick. What is the total mass of swimmers that the raft can carry and float by its top surface at water level? ________________kg
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