Numbers are rounded off to the nearest multiple of 5. Bracketed information is probably superfluous but possibly useful.
An HP Envy m6 laptop battery is rated at 50Wh of potential energy and powers the laptop for 6h of time. The laptop is rated at 50W of power. However, this seems contradictory: from these statistics, it appears that the laptop produces and dissipates 50W*6h=300Wh of electric energy from a battery storing only 16% of that amount in the form of potential energy;
Further, the Tesla Model S comes with a battery pack rated at 60kWh of potential energy that powers the engine for 400km (about 250mi) of distance. The engine is rated at [400Nm (about 300lbft) of torque and] 224kW (about 300hp) of power. An average speed for this vehicle is 80km/h [with the engine running at 5300rpm and carrying 3ton of mass]. From this, it is calculated that the vehicle runs for 400km/80km/h=5h of time. Again, this seems contradictory: from these statistics, it appears that the car produces and dissipates 224kW*5h=1120kWh of kinetic energy from a battery storing only 5% of that amount in the form of potential energy;
How can this be possible? I first thought that, perhaps, the voltage or torque might vary for the applications' inputs and outputs, but energy seemingly should not depend upon those factors; but I cannot fathom for which factor I am actually failing to account.
An HP Envy m6 laptop battery is rated at 50Wh of potential energy and powers the laptop for 6h of time. The laptop is rated at 50W of power. However, this seems contradictory: from these statistics, it appears that the laptop produces and dissipates 50W*6h=300Wh of electric energy from a battery storing only 16% of that amount in the form of potential energy;
Further, the Tesla Model S comes with a battery pack rated at 60kWh of potential energy that powers the engine for 400km (about 250mi) of distance. The engine is rated at [400Nm (about 300lbft) of torque and] 224kW (about 300hp) of power. An average speed for this vehicle is 80km/h [with the engine running at 5300rpm and carrying 3ton of mass]. From this, it is calculated that the vehicle runs for 400km/80km/h=5h of time. Again, this seems contradictory: from these statistics, it appears that the car produces and dissipates 224kW*5h=1120kWh of kinetic energy from a battery storing only 5% of that amount in the form of potential energy;
How can this be possible? I first thought that, perhaps, the voltage or torque might vary for the applications' inputs and outputs, but energy seemingly should not depend upon those factors; but I cannot fathom for which factor I am actually failing to account.
