The diagram below shows light striking a pane of glass. some of the light is reflected and some of the lightest transmitted. the letters represent six different angles. according to the law of reflection which two angles must be equal?

a. e and c
b. f and a
c. b and c
d. a and d

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.

What is an example of static friction

Explain the difference in reactivity of the elements based on their electron configurations.