I am heating my home to 21 degrees Celsius, and the outside temperature is -10 degrees Celsius. Given that there is heat loss due to poor insulation of my home which is proportional to the temperature difference between the inside and the outside, calculate how much energy it takes to heat the room with a heat pump between the inside and the outside with a certain efficiency ɛ
Q: Let us use a heat pump to cook dinner! You set up a heat pump that has 40 % of its theoretical…
A:
Q: An automobile engine converts heat into work via a cycle. The cycle must finish exactly where it…
A:
Q: A house has well-insulated walls. It contains a volume of 100 m3 of air at 300 K. (a) Calculate the…
A: Type of room is insulated Volume of air: V = 100 m Temperature of room: T = 300 K Change in…
Q: Six kilograms of liquid water at 0° C is put into the freezer compartment of a Carnot refrigerator.…
A:
Q: Suppose a woman does 500 ) of work and 9500 J of heat transfer occurs into the environment in the…
A:
Q: The specific heat of water is 4186 J/kg c°. How much does the internal energy of 200 g of water…
A:
Q: How much heat is needed to increase the internal energy of a gas in a piston by 4258 J if the gas…
A: Write the expression for the required heat.
Q: An ideal gas is allowed to expand from a volume of 4.00 m3 to 6.00 m3, while kept at a constant…
A: Solution:
Q: The drawing (not to scale) shows the way in which the pressure and volume change for an ideal gas…
A: Prove that QcQh=TcTh given: Qh is input Heat during isothermal expansionand QC is heat released…
Q: A container holds 2.0 g of Helium at a pressure of 6.0 atm. (a) How much heat is required to…
A: Let n denotes the number of moles of the Helium gas. Let m is the mass of the Helium in a container…
Q: During an experiment, a student added 35 J of heat to a system. At the same time, the environment…
A: (a) Express the first law of thermodynamics. ∆U=Q-W Here, ∆U is the change in internal energy of the…
Q: A person inhales and exhales 2.00 L of 37.0C air, evaporating 4.00 X 10-2 g of water from the lungs…
A: (a) The heat transfer occurs due to evaporation in each breath is, Q=mLv Substituting the values,…
Q: If the pronghorn had no way to exhaust heat to the environment, by how much would it’s body…
A: mass (m) = 32 kg speed (v) = 18 m/s Power = 3.4 kW = 3400 Wtime = 10 minutes
Q: A gasoline engine takes in 1.61×104 J of heat and delivers 3700 J of work per cycle. The heat is…
A:
Q: 3 A mixture of fuel and air is enclosed in an engine cylinder fitted with a piston. The gas pressure…
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: A system does 1.95 × 108 J of work while 7.5 × 108 J of heat is transferred from the system to the…
A: Given data: Work done by the system (W) = 1.95×108 J Heat transferred from the system to the…
Q: An ideal heat pump does 400 J of work to keep the temperature in a dorm room at 20◦ C by dumping…
A:
Q: If the plant operates at 50.0% of its maximum efficiency and its power output is 1.23 × 108 W, at…
A: The given data are: TH=540 KTL=313 KQH=1.23×108 W Here, TH is the higher temperature, TL is the…
Q: The structure of a house is such that it loses heat at a rate of 4500 kJ/h per "C difference between…
A:
Q: A pronghorn antelope can run at a remarkable 18 m/sm/s for up to 10 minutes, almost triple the speed…
A: mass (m) = 32 kg speed (v) = 18 m/s Power = 3.4 kW = 3400 Wtime = 10 minutes
Q: An ideal gas absorbs 437 J of heat from its environment and does 831 J of work on the environment.…
A: The given values are,
Q: A gasoline engine has a power output of 170 kW (about 2.28×105 hp ). Its thermal efficiency is 22.0…
A:
Q: A system gains 3080 J of heat at a constant pressure of 1.28 × 105 Pa, and its internal energy…
A:
Q: A pot containing 0.6 kg of water at 25 degrees celsius was accidentally left on the stove until it…
A: Given that The mass of water present, m=0.6 kg Initial temperature of water Ti= 25°C Heat capacity…
Q: A system contains one mol of an ideal diatomic gas. What is the temperature change when an…
A: Number of moles: n = 1 Work applied on system: W = -235 J Heat supplied to system: Q = -72.5 J Type…
Q: Suppose 1.9 mol of an ideal gas is taken from a volume of 3.0 m3 to a volume of 1.4 m3 via an…
A: number of moles = 1.9 initial volume = 3 m3final volume = 1.4 m3T = 31 C = 304 Kusing ideal gas…
Q: When gasoline burns in an automobile engine, the heat released (342 J) causes the products CO2 and…
A: Given Heat release ,Q = - 342 J Work done by gases =W = 474 J
Q: A system has initial internal energy of 30 J. An energy of 36 J is added to the system by heat while…
A: The laws of thermodynamics 1 state that: energy can be changed but cannot be destroyed or created…
Q: A system gains 3310 J of heat at a constant pressure of 1.38 × 105 Pa, and its internal energy…
A: Write the given values with suitable variables.
Q: A gas is compressed inside a cylinder with an average force of 40 N acts to move the piston 0.20 m.…
A:
Q: A freezer is to convert 1.67 kg of water at 28.8°C to 1.67 kg of ice at - 4.8°C. If the coefficient…
A:
Q: If I add 11664 J of energy to an ideal gas inside a balloon, causing the internal energy to increase…
A: Write the given values with the suitable variables. Q=11664 JΔU=7278 J Here, Q and ΔU are the amount…
Q: A gas trapped in a piston chamber expands by 0.141 m3 at a constant pressure of 1.00 atm. If 4.28 kJ…
A: Given data,Volume Pressure Internal Energy
Q: 1. Suppose a woman does 500 J of work and -9400 J of heat transfer occurs into the environment in…
A: Workdone, W = 500 J Heat transferred, Q = -9400 J
Q: Air is compressed in an adiabatic compressor reversibly from 60.0 kPa and 20°C to 750 kPa. What…
A: The initial pressure is The initial temperature is the final pressure is
Q: An ideal gas is at an initial pressure of 3000 kPa and a volume of 7.00 L. The gas is expanded at…
A: Given that the value of the eshal pressure and initial volume and final volume. Then We have to…
Q: same rate as climbing 116 stairs per minute. Assuming your mass is 76.0 kg and your efficiency is…
A: Answer :- a) The expression to find the power generated in terms of efficiency is: As height of…
Q: Two engines operate between the same two temperatures of 787 K and 385 K, and have the same rate of…
A: Given, Power output of one engine, P1 = 23.0 kW efficiency of second engine, η2 = 42.0% Two engines…
Q: The rate of heat leaking into a house from the warmer outdoors is given by A(TH – TC) where TC and…
A: The rate of heat leakingR=A(TH -TC)where TH is the indoor temperature and TC is the outdoor…
Q: A gas at 0.75 atm with a volume of 21.7 L undergoes a quasi-static isobaric expansion. If during…
A: Given:- A gas has a pressure P = 0.75 atm The volume of the gas is V = 21.7 L The gas undergoes…
Q: A closed gas system has 682 J of heat gain from the environment and 439 J of work is done on the gas…
A: Given data Q=+682 JW=-439 J
Q: Consider the change in the internal energy of a system. -What is the change in the internal energy,…
A: Given data: Work done by the system (W) = 4.725×105 J Heat added (Qin) = 3.2×106 J Heat rejected…
Q: Suppose that you have left a 200 mL cup of coffee sitting until it has cooled to 30◦ C, which you…
A: heat required = m * C * change in temperature H = 200 * 4.2 * (60 - 30) H = 25200 Joules Using,…
Step by step
Solved in 2 steps