You observe a grasshopper eating a blade of grass. You know that each blade of grass contains 100 units of energy. You then measure the energy level of the grasshopper using a fancy device. You notice that the grasshopper only has 20 units of Energy after eating two blades of grass. Based on what you have learned about thermodynamics, where did the rest of the energy go?

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: Which law of thermodynamics states that it is possible to transfer heat from a warm system to a…

A: Which law of thermodynamics states that it is possible to transfer heat from a warm system to a…

Q: After you drive for a while your tires will gain some energy via friction and heat up. If the air…

A: Given  Heat added Q=150J  Work done by gas W=100J

Q: A heat engine has a solar collector receiving 600 Btu/h per square foot, inside which a transfer…

A: Transfer medium is heated to 800R and  collected energy power heat is 100F engine deliver heat 8500.…

Q: A freezer has a coefficient of performance of 6.30. It is advertised as using electricity at a rate…

A: Given: The coefficient of performance of freezer = 6.3,             the power of the engine = 457…

Q: Your last exam is done and you have a two week break before the next semester starts. You look…

A: Given situation:You clean the room and create order from disorder.Question:Are you violating the 2nd…

Q: The U.S. Department of Energy estimates that up to 10 percent of the energy use of a house can be…

A: Annual energy cost,

Q: Suppose a heat engine is connected to two energy reservoirs, one a pool of molten aluminum (660°C)…

A:

Q: The hot water from a geothermal source well steadily transfers 60 kW of heat to a working fluid that…

A:

Q: The “Energy Guide” label on a washing machine indicates that the washer will use $85 worth of hot…

A: Given,

Q: A refrigerator's freezer compartment is set at -10°C; the kitchen is 24°C. What is the theoretical…

A: Given:Temperature of teh kitchen is 24°C.Temperature of campartment is -10°C.Energy present in…

Q: Why are energy equations important in Thermodynamics? Give 5 reasons.

A: Energy equations are fundamental in thermodynamics and play a crucial role in understanding and…

Q: Construct a table of all the possible combinations of numbers that can come up when you throw two…

A: The sample space (S) of the 2 dice is given as,

Q: Consider a building whose annual air-conditioning load is estimated to be 120,000 kWh in an area…

A: Given Annual cooling load        = 120,000 kWh Electricity cost per unit    = RM 0.10 / kWh Air…

Q: bring about a 7.7 J/K increase in the entropy

A: The amount of energy that would have to be transferred to a room temperature environment to bring…

Q: As we drill down the rocks of earths crust, the temperature typically increases by 3°C for every 100…

A: (A) For every 100 m increase the temperature increases by 3 oC  Therefore, for the dept of 1830 m,…

Q: electric hot plate raises its own internal energy and the internal energy of a cup of water by 15000…

A: given Q = -2900 J ΔU = 15000 J

Q: If energy is always conserved, never created or destroyed, then why do most of the machines in our…

A: SOlution: To explain If energy is always conserved, never created or destroyed, then why do most of…

Q: 1. Rick spends four hours researching on the internet and does 1090 J of work. In the process, his…

A: Given data The work done by rick is given as W = 1090 J. The decrease in internal energy is given…

Q: A system absorbs 413 J of heat and does 177 J of work on its surroundings. What is the change in the…

A:

Q: A certain coal-fired power plant has a rated power capacity of P = 850 MW. The output of this plant…

A: Given that :- Power capacity , P=850 MW  Output , W=0.26Q11

Q: Solar panels are rated by their theoretical maximum output capacity. A 2-kW PV panel would…

A: There are 10 PV panels each with capacity 260W.Therefore the total power would be

Q: If you run a movie film backward, it is as if the direction of time were reversed. In the…

A: These laws would be applied if the time is reversed because it is impossible that any process…

Q: 250 students sit in an auditorium listening to a physics lecture. Because they are thinking hard,…

A:

Q: Consider two actual power plants operating with solar energy. Energy is supplied to one plant from a…

A: The efficiency of a power plant is maximum when the heat is supplied to the possible highest…

Q: When you skid to a stop on your bike, you can significantly heat the small patch of tire that rubs…

A: As mentioned in the question statement, the expression for the normal reaction and bike and rider…

Q: A graduate student leaves a cylinder of carbon dioxide sitting in the sun. The cylinder absorbs 25.2…

A: Given:Energy absorbed by cylinder = 25.2 JWork done by the piston = 12 J

Q: An electric motor has its shaft coupled to that of an electric generator. The motor drives the…

A: The motor is running by the electric power. Suppose this power is Po. Due to the some resistance in…

Q: In order to keep a basement from flooding, it is necessary to pump 285 kg of water each minute from…

A:

Q: How much kinetic energy would I have to generate by rubbing my hands together to light my hands on…

A: Rubbing your hands together generates heat due to the friction between them. However, it is unlikely…

Q: Daniel has chores to do around the house. In which of his chores does he use thermal energy? a cook…

A: Thermal energy is generated when there is a rise in the temperature of the system. This energy is…

Q: The metabolic power for typing is 150 W for bob. For how long would bob have to type to use all the…

A: Power = Energy / time Time = Energy / power Energy = 5660 kJ = 5660000 J Power = 150 W Time =…

Q: A previous part of the question says that the total electrical energy the battery can produce is…

A: The energy content of 1 gallon of gas =1.32×10^8 Joules. So the energy content of 12 gallons of…

Q: In1816, Robert Stirling, a Scottish clergyman , patented the Stirling engine which has found a wide…

A: Given: fluid is mono atomic gas γ=1.67CV==12.4 Kj/Kg

Q: The metabolic power for typing is 150 W for Lili, not a lot as you know probably. How long does it…

A: Given that:- P=150 wE=1680 kJ=1.68×106 Jt=?

Q: avocado has 180 Calories. If all this energy could be used to lift a bucket of water weighing 40 N,…

A:

Q: The resistance of an exercise bike is often provided by a generator; that is, the energy that you…

A: (a)