1) in which of the following cases is the torque about the shoulder due to the weight of the arm the greatest?
case 1: a person holds her arm at an angle of 30o above the horizontal (hand is higher than shoulder).
case 2: a person holds her amr straight out parallel to the ground.
case 3: a person holds her arm at an angle of 30o below the horizontal (hand is lower than shoulder).

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)

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?