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a boat with a horizontal tow rope pulls a water skier. She skis off to side, so the rope makes an angle of 15.0 degrees with her direction of motion, and then continues in a straightline. The tension in the rope is 180N. How much work is done on the skier by the rope during a displacement of300m?
need these short essay questions done asap. valid reputable sources are needed as is a works cited. interned sources
12-gauge copper wire has a radius of 1.03×10^?3 m. How much current will pass through the wire if a potential difference of 9.00 V is applied across it
A string requires a 186 N force in order to break. A 1.50 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.90 m. What is the highest speed that this mass can be whirled without breaking the string.
The nonconservative wind and lift forces take the balloon up, doing +9.70 104 J of work on the balloon in the process. Evaluate at what height above the surface of the earth does the balloon have a speed of 7.00 m/s? Enter a number.
In a dentist's office, an X-ray of a tooth is taken using X-rays that have a frequency of 8.07 multiply.gif 1018 Hz
Two polarizers are oriented at 54? to one another. Unpolarized light falls on them. What fraction of the light is intensity is transmitted
A spring of force constant k=2.5*10^2 N/m is suspended form a rigid support. An object o mass 1.00 kg is attached to the uns How far below the starting point is equilibrium position for the object.
Calculate the speed of the second ship with respect to Earth if it is fired in the same direction the first spaceship is already moving
At an amusement park there is a ride in which cylindrically shapedchambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outerwall moves at a speed of 3.5 m/s, and an83 kg pers..
A candle is on the axis of a 15-cm-focal-length concave mirror, 36 cm from the mirror. Is the image real or virtual
A friend of yours is loudly singing a single note at 410 Hz when racing toward you at 26.1 m/s on a day when the speed of sound is 339 m/s. What frequency does your friend hear if you suddenly start singing at 410 Hz.
52 cm3 of gasoline are mixed with 40 cm3 of water. What is the average density of the mixture
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