Physics, 02.09.2019 22:10 Cutiepie55561
High-impact activities such as jogging can cause considerable damage to the cartilage at the knee joints. peak loads on each knee can be eight times body weight during jogging. the bones at the knee are separated by cartilage called the medial and lateral meniscus. although it varies considerably, the force at impact acts over approximately 11.0cm^2 of this cartilage. human cartilage has a young's modulus of about 24.0mpa (although that also varies).a) by what percent does the peak load impact of jogging compress the knee cartilage of a 76.0kg person? b)what would be the percentage for a lower-impact activity, such as power walking, for which the peak load is about four times body weight?
Answers: 1
Physics, 21.06.2019 15:30
Which of the following statements are true of solids? a.the particles do not vibrate. b.the particles are in a fixed location. c.they have strong intermolecular forces between the atoms or molecules. d.the particles have less kinetic energy than those of liquids or gases.
Answers: 1
Physics, 22.06.2019 21:30
Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?
Answers: 2
High-impact activities such as jogging can cause considerable damage to the cartilage at the knee jo...
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