An energetic athlete can use up all the energy from a diet of 4000 Cal/day. If he were to use up this energy at a steady rate, what is the ratio of the rate of energy use compared to that of a 100 W bulb? (The power of 100 W is the rate at which the bulb converts electrical energy to heat and the energy of visible light.)

Q: The total mass of a paratrooper - the person and all the gear - is 118kg. the paratrooper jumps out…

A:

Q: You observe a grasshopper eating a blade of grass. You know that each blade of grass contains 100…

A: Given that:- Energy contain in one blade of grass=100 units

Q: A fire is lit in a hot air balloon, causing 100 J of heat to flow into the air in the balloon.…

A: The change in internal energy is given by, ∆U=Q-W

Q: A system's "entropy" is (a) the amount of work the system can do. (b) the amount of microscopic work…

A: Since entropy is a measure of randomness, so when a system has large number of microscopic quantity…

Q: 1.An electric kettle transfers 900 000 J of energy to some water in 10 minutes. (a) Estimate the…

A:

Q: 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…

A: Given Metabolic power for walking at  5 km/h is W=380 W Each slice of pizza contains energy of…

Q: How much energy would you consume daily if you kept a lightbulb of 20 watts on all day long?

A: A lightbulb is rated as 20 Watt which is indicating the power of the bulb.  P = E/t  Power is…

Q: An electrical power station uses 1.58 x 1014 J of heat Input with an efficiency of 35.7%. (a) How…

A:

Q: Convert 7.87 x 103 cal to the equivalent number of kilocalories (also known as Calories, used to…

A: Consider the conversion formula as given below. 1 kcal=103 cal 1 cal=4.184 J

Q: A3.5 kg mass is sliding across a horizontal table at an initial speed of 6.8 m/s before friction…

A:

Q: Air conditioners sold in the United States are given a seasonal energy-efficiency ratio (SEER)…

A: Temperature inside = 24∘ C = 24 +273 K =297 K Temperature outside =35∘C=35+273K =308 K To find SEER…

Q: How long in minutes will the energy in an 862 kJ (206 kcal) cup of yogurt last in a woman doing work…

A: Given Data: The energy stored in Yogurt is, E=862 kJ The power is, P=110 W The efficiency of a woman…

Q: The total consumption of electrical energy in the United States is about 1.37 x 10¹9 joules per…

A: Total consumption of the electrical energy

Q: That same 0.005 kg is dropped off of the top of the Empire State building, which is about 443 meters…

A: Answer:   Given data: Mass (m) = 0.005 KgHeight (h)=443 mFinal Velocity (v)= 5.28 m/sInitial…

Q: An electrical power station uses 1.68 x 1014 J of heat input with an efficiency of 29.7%. (a) How…

A:

Q: Assume that the efficiency of the portable solar panel shown in the figure is 19%. (a)(a) What is…

A:

Q: A PHYS 1510 student was working on a robotics project. The joints on the machine they were building…

A:

Q: The refrigerator in your kitchen does 490 J of work to remove 95 J of heat from its interior. How…

A: We have to fine the heat that the refrigerator exhausts into the kitchen. We know the work done by…

Q: Problem 1: Suppose a man does 35.5 kJ of work with an efficiency of 4.95 %. How much food energy, in…

A: Given Data, Work Done by the man (W)=35.5 kJ Efficiencyη=4.95 %

Q: In an industrial chemical process, 600 J of heat is supplied to a system while 200 J of work is done…

A:

Q: 3.5x10^7 J of heat transfers into an engine. If 2.1x10^7 J of work is performed what is the…

A:

Q: how much energy required to melt 5 g of ice if you know that the potential heat of melting ice is…

A: Given data:  Mass of ice (m) = 5 g = 0.005 kg Potential heat of melting ice (Lice ) = 354000 J/kg

Q: atings of microwave ovens are listed in watts (1 watt = 1 J/s). How many seconds will it take a…

A: We know that we have given that the volume  872 ml and power 1000 watts of soup from 27 °C to 74 °C…

Q: 28 J of heat energy is transferred into an ideal gas and 48 J of work is done on the gas. What is…

A:

Q: A power plant burns coal and generates an average of 615.0 MW of electrical power while discharging…

A: Given Information:- Electrical power generated by the plant is E=615.0 MW Waste heat H=1020.90 MW…

Q: The average electricity consumption of a house in Gainesville is known to be 1,007 kWh in a month…

A: As the monthly energy consumption is 1007 kWh therefore the daily energy consumption of Gainesville…

Q: In a thermodynamic process, a system absorbs 755 kJ of heat and does 117 kJ of work on its…

A:

Q: An aluminum rod is 20.0 cm long at 20°C and has a mass of 350 g. If 10 000 J of energy is added to…

A:

Q: A heat engine takes in 2500J and does 1500J of work.   a) How much energy is expelled as waste?…

A: Given Data: The heat supplied to the engine is: Qs=2500 J The work produced by the engine is: W=1500…

Q: A 46-kg woman eats a 522 Calorie (522 kcal) jelly doughnut for breakfast. (a) How many joules of…

A: Given: mass of woman, m = 46 kg doughnut jelly energy, E= 522 calorie To Find: (a) Joule of energy…

Human Metabolism

Being described as the most complicated machine ever encountered by humans, the human body and the cell metabolism is nothing less than a wonder. Metabolism is the set of life-sustaining chemical reactions within organisms.