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a breakfast of ceriel, orange juice, and milk contain 230 nutritional calories. Exress this energy in joules.
Step by step
Solved in 2 steps
- (a) What is the average metabolic rate in watts of a man who metabolizes 10,500 kJ of feed energy in one day? (b) What is the maximum amount of work in joules he can do without breaking down fat, assuming a maximum eficiency of 20.0%? (c) Compare his work output with the daily output of a 187W (0.250horsepower) motor.A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the average adult burns or expends about 0.45 Cal/h for every pound of body weight. How many Calories would a 169 lb person burn during 10 hours of sleep? (Note that 1 Cal = 1 kcal.)Sweating is one of the main mechanisms with which the body dissipates heat. Sweat evaporates with a latent heat of 2430 kJ/kg at body temperature, and the body can produce as much as 1.5 kg of sweat per hour. If sweating were the only heat dissipation mechanism, what would be the maximum sustainable metabolic rate, in watts, if 80% of the energy used by the body goes into waste heat?
- A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal. When sleeping, the average adult burns or expends about 0.44 Cal/h for every pound of body weight. How long would the person have to sleep continuously to lose 1 lb of body fat? (Assume the person weighs 155 Ib.)A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the average adult burns or expands about 0.45 Cal/h for every pound of body weight. How many calories would a 143lb person burn during 9 hours of sleep? (Note that 1 Cal= 1 kcal.)A sleeping 68 kg man has a metabolic power of 71 W. How many Calories does he burn during an 8.0 hour sleep?
- A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal. When sleeping, the average adult burns or expends about 0.41 Cal/h for every pound of body weight.How long would the person have to sleep continuously to lose 1 lb of body fat? (Assume the person weighs 155 lb.)A can of cola from the united states contains 180 Cal and a can containing the same amount of cola from Australia contains 900 J. Which contains more energy?A typical human consumes 2500 Kcal of energy during a day. Say you decided to run stairs all day. How much energy, in Joules, would you burn in climbing stairs all day?
- How many sprints from rest to a speed of 5.0 m/s would a 65-kg man have to complete to burn off 5.0 x 10^2 Calories? (Assume 100% efficiency in converting food energy to mechanical energy.)How long does a 65 kg adult need to walk at a rate of 5 km/h in order to burn off all the energy in half slice of pizza. Each slice of pizza contains 1260 kJ of energy. The metabolic power for walking at 5 km/h is 380 W. O 27.6 min O 6.9 min O 55.3 min O 13.8 minA pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal. When sleeping, the average adult burns or expends about 0.42 Cal/h for every pound of body weight.How long would the person have to sleep continuously to lose 1 lb of body fat? (Assume the person weighs 150 lb.) Answer in hours.
