BIO Brain Power As you read this problem, your brain is consuming about 22 W of power. (a) If your mass is 65 kg, how many steps with a height of 21 cm must you climb to expend a mechanical energy equivalent to one hour of brain operation? (b) A typical human brain, which is 77% water, has a mass of 1.4 kg. Assuming that the 22 W of brain power is converted to heat, what temperature rise would you estimate for the brain in one hour of operation? Ignore the significant heat transfer that occurs between a human head and its surroundings, as well as the 23% of the brain that is not water.
BIO Brain Power As you read this problem, your brain is consuming about 22 W of power. (a) If your mass is 65 kg, how many steps with a height of 21 cm must you climb to expend a mechanical energy equivalent to one hour of brain operation? (b) A typical human brain, which is 77% water, has a mass of 1.4 kg. Assuming that the 22 W of brain power is converted to heat, what temperature rise would you estimate for the brain in one hour of operation? Ignore the significant heat transfer that occurs between a human head and its surroundings, as well as the 23% of the brain that is not water.
BIO Brain Power As you read this problem, your brain is consuming about 22 W of power. (a) If your mass is 65 kg, how many steps with a height of 21 cm must you climb to expend a mechanical energy equivalent to one hour of brain operation? (b) A typical human brain, which is 77% water, has a mass of 1.4 kg. Assuming that the 22 W of brain power is converted to heat, what temperature rise would you estimate for the brain in one hour of operation? Ignore the significant heat transfer that occurs between a human head and its surroundings, as well as the 23% of the brain that is not water.
Study of body parts and their functions. In this combined field of study, anatomy refers to studying the body structure of organisms, whereas physiology refers to their function.
Discuss the differences between the Biot-Savart law and Coulomb’s law in terms of their applicationsand the physical quantities they describe.
Explain why Ampere’s law can be used to find the magnetic field inside a solenoid but not outside.
3. An Atwood machine consists of two masses, mA
and m B, which are connected by an inelastic cord
of negligible mass that passes over a pulley. If the
pulley has radius RO and
moment of inertia I about its axle, determine the
acceleration of the masses
mA and m B, and compare to the situation where the
moment of inertia of the
pulley is ignored. Ignore friction at the axle O. Use
angular momentum and torque in this solution
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