You set your stationary bike on a high 80-n friction-like resistive force and cycle for 30 min at a speed of 8.0 m/s . your body is 10% efficient at converting chemical energy in your body into mechanical work.

a.) what is your internal chemical energy change?

b.) how long must you bike to convert 3.8×105 j of chemical potential while staying at this speed? (this amount of energy equals the energy released by the body after eating three slices of bread.)

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation:

the entire statement is true and correct.  

there's no diagram, nothing is illustrated, and no question is asked.