What is the wavelength of the sound
A tuning fork vibrates at a frequency of 256 Hz. What is the wavelength of the sound coming from the fork when the air temperature is a) 0oC and b) 20oC
a) 1.29 meters
b) 1.34 meters
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An engine of mass 180 kg is to be supported on four helical springs. When the engine speed is 900 rpm, there is a primary vertical periodic disturbing force of maximum value 300 N due to the unbalanced reciprocating weights.
Sketch Mohr's circle for this state of stress and determine the normal stress on a plane inclined at an angle µ to the principal plane 1. Hence find the range of values of µ for which the normal stress is tensile.
The combined mass is shot horizontally off the cliff. With what speed does the mass hit the ground at the bottom of the cliff?
Calculate the amplitude of the oscillation which may be allowed if the maximum permissible intensity of shearing stress in the wire is 140 MN/m2
Neglecting kinetic and potential energy effects, determine: (a) The amount of heat transfer, in kJ and (b) The mass of vapor that escapes, in kg.
When x = 10 ft, the crate has a speed of 20 ft/s which increasing at 6 ft/s^2. Determine the dirction of the crate's velocity and the magnitude of the crate's acceleration at this instant.
Air within a piston-cylinder assembly, initially at 175psi, 660oF, undergoes an isentropic expansion to 20 psi. What is the final temperature of the air?
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