Under normal conditions the human heart converts about 12.7 J of chemical energy per second into 1.27 W of mechanical power as it pumps blood throughout the body. (a) Determine the number of Calories required to power the heart for one day, given that 1 Calorie equals 4186 J. Cal (b) Metabolizing 1 kg of fat can release about 9000 Calories of energy. What mass of metabolized fat (in kg) would power the heart for one day? kg

Under normal conditions the human heart converts about 12.7 J of chemical energy per second into 1.27 W of mechanical power as it pumps blood throughout the body. (a) Determine the number of Calories required to power the heart for one day, given that 1 Calorie equals 4186 J. Cal (b) Metabolizing 1 kg of fat can release about 9000 Calories of energy. What mass of metabolized fat (in kg) would power the heart for one day? kg

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Conservation Of Energy

Section: Chapter Questions

Problem 59P

See similar textbooks

Similar questions

What average power is generated by a 70.0-kg mountain climber who climbs a summit of height 325 m in 95.0 min? (a) 39.1 W (b) 54.6 W (c) 25.5 W (d) 67.0 W (e) 88.4 W
Calculate the efficiency (km/L) of a car that has traveled 150 kilometers in the past 4 days, using 35 kWh of energy per day. Group of answer choices 10.7 km/L 14.4 km/L 15.0 km/L 16.3 km/L
A human heart consumes about 1 J per heartbeat. About how many calories of energy must food furnish to a person each day to supply this energy? Forcomparison purposes, one nutritionist’s calorie of food energy is equivalent to 4184 J.
Under normal conditions the human heart convertsabout 13.0 J of chemical energy per second into 1.30 W ofmechanical power as it pumps blood throughout the body.(a) Determine the number of Calories required to powerthe heart for one day, given that 1 Calorie equals 4 186 J.(b) Metabolizing 1.00 kg of fat can release about 9.00 x 103Calories of energy. What mass of metabolized fat would powerthe heart for one day?
An 83kg man eats a banana of energy content 1.00x10^3 kcal. If all of the energy from the banana is converted into kinetic energy of the man, how fast is he moving, assuming he starts from rest?
The specific energy and density of gasoline is -47.3 MJ/kg and 716 kg/m3, respectively. What is its energy density? A. -0.066 m3/MJ B. -0.066 MJ/m3 C. - 33. 867 MJ/m3 D. - 33, 867 m3/MJ
A 71.1-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then drops through a height of 1.59 m, and ends with a speed of 8.51 m/s. How much nonconservative work (in kJ) was done on the boy?
A hiker of mass 49 kg is going to climb to the top of Mount Tam, which has elevation of 2574 ft. If the hiker starts climbing at an elevation of 305 ft, what will their change in gravitational potential energy in joules, once they reach the top? Assume the zero of gravitational energy is at sea level and a hint is that the change in gravitational potential energy is final potential energy minus the original!!
A patient's heart pumps 5.00 L of blood per minute into the aorta, which has a diameter of 1.80 cm. The average force exerted by the heart on the blood is 16.5 N. Waht is the average mechanical power output of the heart?
A mass of 700 kg moving at a speed of 36 km/h collides with a horizontally mounted spring of spring constant 6.26*10^3 N/m, what is the maximum compression (meters) of the spring?
A roller coaster features a near vertical drop of 150 meters. If the initial velocity was zero, the mass of the cart and riders was 2,000 kg, and the velocity at the end of the drop was 50 m/s, how much of the potential energy was converted into thermal energy? 1 440 kJ 2 479 kJ 3 528 kJ 4 599 kJ
What is the minimum energy needed to change the speed of a 1680 kg sports utility vehicle from 18.8 m/s to 44.2 m/s?