Light having a wavelength of 450 nm (4.50 × 10-7 m) moves through space at 3.0 × 108 m/s. What is the frequency of the light? A.1.35 × 102 Hz
B.7.41 × 10-3 Hz
C.1.50 × 10-15 Hz
D.6.67 × 1014 Hz

The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.