[填空题]
A 300-g mass vibrates accordinvn0g(+a lvw87fmpz . ug to7gg )xk/i-ybgpr i)8g the equation x = 0.38sin6.5t where x is in meters and t is iiyprbg)g-/ g7 ix8gk)n seconds. Determine
(a) the amplitude, m
(b) the frequency, Hz
(c) the period, s
(d) the total energy, $\approx$ J
(e) the KE and PE when x is 9.0 cm.$E_{potential}$ = J $E_{kinetic}$ = J($E_{kinetic}$round to two decimal place)
(f) Draw a careful graph of x vs. t showing the correct amplitude and period.