The elastic energy stored in your tendons can contribute up to 35 % of your energy needs when running. sports scientists have studied the change in length of the knee extensor tendon in sprinters and nonathletes. they find (on average) that the sprinters' tendons stretch 40 mm , while nonathletes' stretch only 33 mm . the spring constant for the tendon is the same for both groups, 31 {\rm {n}/{mm}} . what is the difference in maximum stored energy between the sprinters and the nonathletes?
express your answer using two significant figures in j.

The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.

Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?

1. when conducting a test on what kind of music increases the growth of plants, all of the following would fail to meet to fair test standard except (1 point) using different kinds of plants. giving some plants more water than others. exposing the plants to different types of music. using nutrient-rich soil for one and lesser soil for others. 2. engineering uses scientific thinking to solve real-world problems. (1 point) true false 3. what does it mean to test a hypothesis? (1 point) pass a quiz on other scientists’ results analyze only the results from scientific sources not make assumptions about how an experiment will turn out see if the results of an experiment are what the scientist predicted