Wave-pulse to travel via the cord
A cord of mass 0.730 kg is stretched between two supports 38.0 m apart. If the tension in the cord is 460 N, how long (in s) will it take for a wave-pulse to travel via the cord from one support to the other?
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After a package is ejected from the plane, how long will it take for it to reach sea level from the time it is ejected? Assume that the package, like the plane, has an initial velocity of 270 mph in the horizontal direction.
A laser emits light at a wavelength of 591 nm. How many photons and moles of photons does it emit each second if its power is 6.0 W?
A coin is placed on a vinyl record making 45 revolutions per minute. Calculate the period for the record. The coin is placed 9.1 from the center. The centripetal acceleration is _____ m/s2.
When numbers are very small or very large, it is convenient to either express the value in scientific notation and/or by using a prefix with the unit.
An aqueous solution contains 13.5% NaCl by mass. What mass of water (in grams) is contained in 2.1L of the vapor above this solution at 55 °C? The vapor pressure of pure water at 55 °C is 118 torr. (Assume a van't Hoff factor of 1.9 for NaCl.) &
Jason is practicing his tennis stroke by hitting balls against a wall. The ball leaves his racquet at a height of 60 cm above the ground at an angle of 80' with respect to the vertical.
What did the Macaque monkey research teach primatologist Carol Shively about the connection between power, subordination and health? What parallels can we draw to human society?& ;
Describe how solid hexachloroethane would behave while carrying out a melting point determination at atmospheric pressure (760 torr) in a capillary tube open at the top.
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