The battery power available to run a satellite is given by the formula P=50e^(-t/250), where P is the power in watts and t is time in days. for how many days can the satellite run if it requires 15 watts of power?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.