A 73-kg person drinks 500 g of milk, which has a "caloric" value of approximately 720 cal g'. If only 17% of the energy in milk is converted to mechanical work how high (in meters) can the person climb based on this energy intake?
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A: Given data: Energy in calories is, E=7.13×103 cal.
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- To produce 96 hp of mechanical power, an automobile engine requires a supply of heat of 4.91 105 J per second from combustion of the fuel. What is the efficiency of this engine?Q20: Dr. Fahrrad has been riding his bike to his job and is curious how many ATP his body is breaking apart in order to do the work required to get to his job. Dr. Fahrrad rides 8.6 kilometers to his job, has a mass of 68.4 kilograms and has an average acceleration of 2.4 kilometers per second squared. The molecule ATP is able to do work, measured in kilojoules per mole of ATP broken into ADP. The SI unit for work is a joule. Using the information given we can calculate work and then convert to moles of ATP. The first step is to take stock of what we are given in the word problem and what we are trying to find. We have mass, distance, and average acceleration. We are trying to find how many ATP are required to power the bike ride to work. The equation for work, is force times distance and will tell us how many joules Dr. Farrhad is using on his bike ride. It also incorporates one of our given variables, distance. However, the distance was reported in kilometers and the SI unit of…A certain sandwich cookie contains 55 CC of nutritional energy. For what amount of time must you swim in order to work off three cookies if swimming consumes 510 C/hC/h AND Instead of swimming you decide to run for 40 min at a pace that works off 860 C/hC/h. How many cookies have you worked off?
- A gas is compressed inside a cylinder. An average force of 80 N acts to move the piston 4.5 m. During the compression, 46 J of heat are conducted away from the gas. What is the change in internal energy of the gas? Calculate answer to one decimal.An aluminum rod is 30cm long at 33°C and has a mass of 330g. If 13,000 J of energy is added to the rod by heat, what is the change in length of the rod? Do not use scientific notation and enter your answer in m.A heat pump operates with an outside temperature of –10°C and an inside temperature of +19°C. If the building requires 1.6 GJ of heat per day, what is the average power requirement in kW for the heat pump?
- A 60.0 kg person will need to climb 10.0 m stairway how many times to "work off" each excess cal (kcal) consumed?bacon-cheddar-double-burger meal along with A 65.0-kg mountain climber just ate a Johnny Rocket's two peanut butter milkshakes, which have 5810 Calories (5810 kilocalories). Assume she can convert these calories into energy with 100% efficiency and use the fact that 1 kcal = 4186 J. Calculate how many times she could climb up Mt. Everest - the world's tallest mountain. The height of Mt. Everest is 8840 m.