A 2000kg car is advertised that it can go from rest to 30m/s, drives 100km, and 3000m in height on 1 gallon(2.8kg) of gas. The average force of friction including air resistance is 700N. Gasoline has a heat of combustion of 5.0 x 104 J/g. a) What is the car’s efficiency if all of this is true? b) Do you think the advertisement is accurate?
Q: A woman climbing the Washington Monument metabolizes 590 kJ of food energy. a. If her efficiency is…
A: The objective of the question is to find out how much heat is transferred to the environment when a…
Q: A certain coal-fired power plant has a rated power capacity of P = 950 MW. The output of this plant…
A:
Q: A hot air balloon is being inflated to its full extent by heating the air inside it. In the final…
A:
Q: a. For a given location, the wind speed at 10m and 50m heights above ground has been measured to be…
A: (a). The relationship between wind speed at different heights above the ground is often modeled…
Q: Please see attached image for question
A: The 70 kg cyclist is initially at rest on top of the hill, 17 m high. This cyclist has to coast down…
Q: A 20 kg block is slid down a rough ramp. The block starts from rest at the top of the ramp. When the…
A:
Q: Thermal Physics The graph below shows the temperature of a sample of substance as it is heated. The…
A: When a substance is heated there is an increase in the temperature of the material. The increase in…
Q: f work is done on a system as it undergoes compression. What is the total amount of energy…
A: 1.GivenWork is done on the system , W=-360 JIncrease in internal energy, ∆U=180 J
Q: Question #: 23 If a person who normally requires an average of 12,000 kJ (~ 3000 Cal) of food energy…
A: If a person who normally requires an average of 12,000 kJ (3000 kcal) of food energy per day…
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: 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 large electrical power station generates 921 MW of electricity with an efficiency of 39.6%.…
A:
Q: Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to…
A:
Q: An air-filled cylinder with a movable piston has a heat reservoir in con- tact with it. The heat…
A:
Q: Gas is sealed within a beaker with a movable piston top. You decide to place the beaker into a…
A: The heat energy required to flow out of the beaker is,Q=60 J. The work done to compress the gas is,…
Q: A 53-kg mountain climber, starting from rest, climbs a vertical distance of 764 m. At the top, she…
A:
Q: The initial temperature of 13 moles of an ideal gas is 358 K. 18000 J of heat are added to the gas…
A: It is given that on adding heat energy, gas gets expanded. It means that volume of gas gets…
Q: 0.90 L of 25 °C water is placed in a refrigerator. The refrigerator's motor must supply an extra 9.0…
A: Approach to solving the question:Please see attached photos for detailed solutions. thank you.…
Q: 0.0517 mols of an ideal gas is quickly compressed from 1.12 L to 0.410 L . Initially the gas has a…
A: Concept: This is the Thermodynamics Question. Because the ideal gas is compressed quickly in this…
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 Carnot's refrigerator takes heat from water at 0°C and discards it to a room at 27°C. If 1 kg of…
A: The objective of the question is to find out the amount of heat discarded to the room, the work done…
Q: An engine has a hot reservoir that contains 20,000 J of heat energy at 3270 C, and a cold reservoir…
A:
Q: The motor that drives a refrigerator produces 151 W of useful power. The hot and cold temperatures…
A:
Q: An electric motor running a large copier draws 2.7 kW. The motor runs 3 hours in a day. How much…
A: According to Joule's law of heating, heat developed in the conductor is,H = P×t Where,H = heat…
Q: ) find the total change in thermal energy involved in changing 4.55 L of water at 75.0oC to ice at…
A: "Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: A heat pump is a heating system installed on some newer houses. It works by pumping heat from…
A: Given that: ηHP max=THTH-TCTo=44°F=279.82 KTin=65°F=291.48 KA=1025 ft2h=8 ft
Q: Problem 1: Which of the following would violate the Second Law of Thermodynamics? Choose one that…
A: The second law of thermodynamics states that any spontaneously occurring process will always lead to…
Q: 1014 J of heat transfer into the engine and has an efficiency of 42 %. a.) How much heat transfer…
A:
A 2000kg car is advertised that it can go from rest to 30m/s, drives 100km, and 3000m in height on 1 gallon(2.8kg) of gas. The average
a) What is the car’s efficiency if all of this is true?
b) Do you think the advertisement is accurate?
Step by step
Solved in 3 steps with 7 images
- In performing 154.0 J of work, an engine exhausts 65.0 J of heat. What is the efficiency of the engine? e = 29The thermal energy of 0.700 mol of a substance is increased by 0.900J. A. What is the temperature change if the system is a monatomic gas? (Hint: answer is not 103.09 K) B. What is the temperature change if the system is a diatomic gas? (Hint: answer is not 51.5 K) C. What is the temperature change if the system is a solid? (Hint: answer is not 9384.8 K)vasan ben
- Can you help 2a and subpart 2b 1. A certain power plant produces useful work (i.e. electricity) at a rate of 900 MW (remember, that's 900 x 106 joules/sec). How many joules of electricity does this power plant produce in 24 hours? 2a. To generate this amount of electricity, the power plant uses 2.22 x 1014 J of heat drawn from burning coal. What is the efficiency of this power plant? 2b. How much waste heat, Qc, does this power plant eject into its cold reservoir in 24 hoursIn 1903, Aegidius Elling of Norway designed and built an 11-hp gas turbine that used steam injection between the combustion chamber and the turbine to cool the combustion gases to a safe temperature for the materials available at the time. Currently there are several gas-turbine power plants that use steam injection to augment power and improve thermal efficiency. For example, the thermal efficiency of the General Electric LM5000 gas turbine is reported to increase from 35.8 percent in simple-cycle operation to 43 percent when steam injection is used. Explain why steam injection increases the power output and the efficiency of gas turbines. Also, explain how you would obtain the steam.An aircraft engine takes in 8900 JJ of heat and discards 6700 JJ each cycle. Part A. What is the mechanical work output of the engine during one cycle? Part B. What is the thermal efficiency of the engine? Express your answer as a percentage.
- An electric power plant uses energy from burning coal to generate steam at 450oC. The plant is cooled by 20oC water from a nearby river. If burning coal provides 100MJ of heat, what is the theoretical minimum amount of heat that must be transferred to the river during the conversion of heat to electric energy? a- 100MJ B- 90MJ c- 60MJ D- 40MJIf mass of air in a house is 278.6376kg. And the specific heat of air is 1.0kj/kgK. How much heat energy is needed to heat air by 10K? Use Q=mc∆TD). i.,ii.,iii. Please!
- A gas expands from I to F in the figure below. The energy added to the gas by heat is 212 J when the gas goes from I to F along the diagonal path. Three paths are plotted on a PV diagram, which has a horizontal axis labeled V (liters), and a vertical axis labeled P (atm). The green path starts at point I (2,4), extends vertically down to point B (2,1), then extends horizontally to point F (4,1). The blue path starts at point I (2,4), and extends down and to the right to end at point F (4,1). The orange path starts at point I (2,4), extends horizontally to the right to point A (4,4), then extends vertically down to end at point F (4,1). (a) What is the change in internal energy of the gas? Use the relations between various features of the graph and the work done on the gas to find the energy added by work and then use your result to find the change in internal energy of the gas. J(b) How much energy must be added to the gas by heat for the indirect path IAF to give the same change in…An uninsulated container holds 3.5 mol of an ideal gas at an initial temperature of 300 K. The gas is compressed by a movable piston, and 500 J of work is done on the gas while being compressed. If the final temperature of the gas is 400 K, how much heat flows in or out of the gas during this process?Two distinct systems have the same amount of stored internal energy. Assume 500 J are added by heat to the first system, and 300 J are added by heat to the second system. What will be the change in internal energy of the first system if it does 200 J of work? How much work will the second system have to do in order to have the same internal energy?