A water holding tank measures 95 m long, 40 m wide, and 12 m deep. Traces of mercury
have been found in the tank, with a concentration of 60 mg/L.
What is the total mass of mercury in the
tank?
Answer in units of kg

What is hidden during a lunar eclipse? isn't the moon hidden?

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?