La distancia que separa al punto P del punto Q es 20 cm, mientras que la separación entre Q y R es 40 cm. Si el tiempo que tarda en viajar desde P hacia Q es 4 s, ¿cuál es la frecuencia de la onda en el medio 2? A) 0,5 Hz.
B) 1,0 Hz.
C) 2,0 Hz.
D) 4,0 Hz.
E) 8,0 Hz.

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)

How is zig zagging a form of acceleration?

Against his financial advisor's advice, frank has decided to invest his money in some risky stocks because he once made quite a bit of money in the stock market. his decision illustrates a. the representativeness heuristic b. overconfidence c. the availability heuristic d. confirmation bias select the best answer from the choices provided