Physics, 04.12.2019 07:31, kbenitez90
The achilles tendon connects the muscles in your calf to the back of your foot. when you are sprinting, your achilles tendon alternately stretches, as you bring your weight down onto your forward foot, and contracts to push you off the ground. a 70 kg runner has an achilles tendon that is 15 cm long and has a cross-section area of 110 mm² typical values for a person of this size. 1. by how much will the runner's achilles tendon stretch if the force on it is 8.0 times his weight? young's modulus for tendor is 0.15 x 10¹⁰n/m². express your answer to two significant figures and include the appropriate units. 2. what fraction of the tendon's length does this correspond.
Answers: 1
Physics, 22.06.2019 11:50, brendaesme
Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.
Answers: 2
Physics, 22.06.2019 18:00, RyannLambertt7141
Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.
Answers: 1
The achilles tendon connects the muscles in your calf to the back of your foot. when you are sprinti...