Question

Can someone explain and show equations

Problem 21 A circuit consists of a single Eveready 1.5-Volt battery and a resistor of 100-Ohms. In this configuration, the battery has a lifetime of 100 hours. A second circuit has two Eveready 1.5-Volt batteries connected in series to a 100-Ohm resistor. What is the lifetime of the batteries in this circuit? 1) 100 hours 2) 200 hours 3) 50 hours 4) 25 hours 0,01厂辽 5) Not enough information p:118 lod Problem 22 LightSaikl is a spacecraft that will be launched in late 2010. It is designed to fly far to avoid atmospheric drag), and will test the practicality of using ft has a mass of 4.5 kg, and the sail has an area of r propulsion. The spacecra .e Il sunlight strikes the sail at normal incidence (i erfectly reflected. What will be the rgy intensity of

Answer 1

Double battery has 2 times stored energy but Power consumption is 4 time so will work for half the time only