Determine the dirction of the crates velocity
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.
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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
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
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.
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.
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?
The researchers wanted to see if there was a change in contamination in crayfish. What is the test statistic for this problem? (use 2 decimal places)?
H2O enters a well-insulated nozzle operation at 1000oF, 500 psi and a velocity of 10 ft/s. At the nozzle exit, the pressure is 14.7 psi and the velocity is 4055 ft/s. What is the entropy production?
A hypothesis test for a population proportion p is given below: Ho: p = 0.25 vs. Ha: p NE 0.25 (NE means not equal) For sample size n=100 and sample proportion p = 0.30. What is the critical value for an alpha of .01?
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