A tuning fork with a frequency of 440hz gives off a constant amplitude pressure of 5 pascals. The fork is perfectly quiet, then is struck on a table at t=0 and rises to maximum positive amplitude. Determine a function describing the pressure vs. time of the tuning fork, then answer the following attributes: The function is . (Write in 1 of sin, -sin, cos, -cos exactly)
k=___
a=___ (leave off units)
b=___(round to nearest whole number)