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The water skier is at an angle of 35o with respectto the center line of the boat, and is being pulled at a constantspeed of 14 m/s . If the tension in the tow rope is 90.0 N, (a) howmuch work does the rope do on the skier in 10.0 s? (b) How muchwork does the resistive force of water do on the skier in the sametime?
One end of a string 3.0 m long is moved up and down with simple harmonic motion at a frequency of 60 Hz. The waves reach the other end of the string in 1.00 s. Find the wavelength of the waves on the string.
the top of pikes peak is 14100 ft above sea level. neglecting the variation of t with altitude and using the average
If a 200 lb bungee jumper jumps from a bridge 150 ft and touches the top of the river. If the cord absorbs 14 percent of the energy how far will be man be at the Top of the next bounce from the river bottom.
A uniform thin rod of length 0.40 m and mass 3.0 kg can rotate in a horizontal plane about a vertical axis through its center. what is the bullet's speed just before impact
A 51.0-g Super Ball traveling at 27.0 m/s bounces off a brick wall and rebounds at 21.5 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.75 ms,
a 27 kg block is pulled across a horizontal surface by a rope. the block has an acceleration of 3.5 ms2 and the
Gamma rays (γ rays) are high-energy photons. In acertain nuclear reaction, a γ ray of energy .511 MeV (millionelectrovolts) is produced
how does temperature affect the extent of dissociation of
2 parallel straight wires are 9.0 cm apart and each caries a 10.0 a current in the same direction. one wire is securely
A solenoid is made of N=2500 turns, has a length L=10cm, and a radius R=0.5cm. What is the current through the wires of the solenoid
a garden hose with a diameter of 0.63in. has water flowingin with a speed of 0.78m/s and a pressure of 1.2 atmosphere. estimate the speed of water in the nozzle
In a heat conductivity experiment, a slab of silicon of thickness 2 x 10^-3m and area of 0.40m^2 seperates condensing steam(lv=540cal/g) at 100 degree C, Find the increase of entropy in the universe during one minute of this experiment
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