Energy is conventionally measured in Calories as well as in joules. One Calorie in nutrition is one kilocalorie, defined as 1 kcal = 4 186 J.
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Physics for Scientists and Engineers with Modern Physics
- Under normal conditions the human heart converts about 13.2 J of chemical energy per second into 1.32 W of mechanical power as it pumps blood throughout the body. HINT (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? kgarrow_forwardat an amusement park, a swimmer uses a water slide to enter the main pool.the swimmer slides without friction, and descends through a vertical height of 2.49m. find the swimmers speed at the bottom of the slide if she starts with an initial speed of 0.850m/sarrow_forwardEmma rides a barrel over Niagara Falls. The barrel is moving at 7.50m/s as it goes over the top of the falls, which are 99.0m high. Assuming there is no friction, how fast is it moving when it hits the bottom?arrow_forward
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- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning