What are the three factors discussed in our live session that can lead to success through challenging physical activities: Talent, flexibility, and stamina

Strength, balance, and endurance

Knowledge, attitude, and fitness level

Attitude, motivation, and determination

How does convection affect our atmosphere? our layers of earth? our oceans?

Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?