A typical muscle fiber is 2.0 cm long and has a cross-section area of 3.1×10−9m2. When the muscle fiber is stimulated, it pulls with a force of 1.3 mN. What is the work done by the muscle fiber as it contracts to a length of 1.6 cm?

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:

thermal energy is the answer

i think the answer is a, hope this : )