Physics, 28.11.2019 06:31 heavendl13
A1.40-m string of weight 0.0122 n is tied to the ceiling at its upper end, and the lower end supports a weight w. neglect the very small variation in tension along the length of the string that is produced by the weight of the string. when you pluck the string slightly, the waves traveling up the string obey the equation y(x, t)=(8.50mm)cos(172rad⋅m−1x−2730rad⋅ s−1t) assume that the tension of the string is constant and equal to w.
how much time does it take a pulse to travel the full length of the string?
what is the weight w?
how many wavelengths are on the string at any instant of time?
what is the equation for waves traveling down the string?
a) y(x, t)=(8.50mm)cos(172rad? m? 1x? 2730rad? s? 1t)
b) y(x, t)=(8.50mm)cos(172rad? m? 1x+2730rad? s? 1t)
c) y(x, t)=(10.5mm)cos(172rad? m? 1x+2730rad? s? 1t)
d) y(x, t)=(10.5mm)cos(172rad? m? 1x? 2730rad? s? 1t)
Answers: 1
Physics, 22.06.2019 01:10, caguil00
Asteam power plant operates on an ideal reheat rankine cycle between the pressure limits of 15 mpa and 10 kpa. the mass flow rate of steam through the cycle is 12 kg/s. steam enters both stages of the turbine at 500°c. if the moisture content of the steam at the exit of the low-pressure turbine is not to exceed 10 percent, determine (a) the pressure at which reheating takes place, (b) the total rate of heat input in the boiler, and (c) the thermal efficiency of the cycle. also, show the cycle on a t-s diagram with respect to the saturation lines. (2.15 mpa; 45.0 mw; 42.6%)
Answers: 3
Physics, 22.06.2019 11:00, stankyweezle
A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n
Answers: 3
A1.40-m string of weight 0.0122 n is tied to the ceiling at its upper end, and the lower end support...
Mathematics, 05.05.2020 03:57
Mathematics, 05.05.2020 03:57