7) A battery supplies 100wW-h of electric energy. if 10 Btu is lost by the battery...
Problem 10: Suppose a battery operates a 1.95 W electric clock for 16 months. A) What is the available energy content, in joules, of the battery? B) How many years can a battery that supplies 7.75 X 10' J run a pocket calculator that consumes energy at the rate of 0.95 x 10-3 W? Problem 4: Consider the kinetic energy of a 22000-kg truck moving at 107.5 kmh and that of an 92.5- kg astronaut in orbit moving at 27500...
A 9.5 V battery supplies a 3.5 mA current to a circuit for 7.0 h . Part A: How much charge has been transferred from the negative to the positive terminal? Part B: How much electric potential energy has been gained by the charges that passed through the battery?
Water is being heated in a frictionless piston cylinder device. During the process, 8 Btu of heat is lost to the surroundings, 50,000 lbf-ft of heat is transferred to the container from a burner, and 7 Btu of work is done by the expansion of the vapor. Determine the change in the internal energy for this process.
a 12 V accumulator battery has a 55 A-h storage capacity. what is the total electric energy stored in the battery
1. What is the emf of a battery that increases the electric potential energy of 0.050 C of charge by 0.60 J as it moves from the negative to the positive terminal? 2 .A thermistor is a device whose resistance varies with temperature. At 20∘C a thermistor's resistance is 10.0 kΩ. When connected to a 1.2 V battery, the current through the thermistor increases by 20 μA as the temperature increases to 30∘C. What is the thermistor's resistance at this...
A 5.0 V battery storing 43.0 kJ of energy supplies 1.5 A of current to a circuit. How much energy does the battery have left after powering the circuit for 1.0 h?
A pure electric car is designed to operate with 12 V battery with a total energy of 2.00×10^7 J stored when it is full. When the car moves with constant speed of 20.0 m/s, its electric motor spends 8.00 kW power. a) Find the current used by motor. b) Determine the distance you can travel with one charge.
An electric car drives 40 miles, depleting its battery of 10 kWh of energy. It is charged by plugging into an outlet that draws its power from a natural-gas-burning power plant that has an efficiency of 35%. How much primary energy in kWh of natural gas was used to provide the 10 kWh of energy for the car's battery? Provide your answer to 3 significant figures.
An electric car has a battery that can hold 19 kWh of energy. If the battery is designed to operate at 340 V, how many coulombs of charge would need to leave the battery at 340 V and return at 0 V to equal the stored energy of the battery? Assume that the voltages are constant.
The battery pack of an electric bicycle requires 24V, and 1KWh energy. If the battery pack is constructed from AA-size batteries with 1.2V and 10Wh energy, calculate how many cells are needed, and how many of the AA cells must be connected in series, and how many in parallel to meet the requirements of the electric bike.