The mean distance between earth and the sun is 1.50 × 1011 m. the average intensity of solar radiation incident on the upper atmosphere of the earth is 1390 w/m2. assuming the sun emits radiation uniformly in all directions, determine the total power radiated by the sun.

Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?