What is the power plant's thermal efficiency?Express your answer as a percentage.25ΜΕ ΑΣΦSubmitPrevious Answers Request Answer?%X Incorrect; Try Again; 29 attempts remaining The electric output of a power plant is 730 MW.Cooling water flows through the power plant at the rate0.700 × 108 L/hr. The cooling water enters the plantat 16.0 °C and exits at 26.0°C.

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Answered: What is the power plant's thermal…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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The electric output of a power plant is 800 MW. Cooling water flows through the power plant at the rate 1.00 x 108 L/hr. The cooling water enters the plant at 11.0 °C and exits at 29.0 °C. What is the power plant's thermal efficiency? Express your answer as a percentage.
Bananas are to be cooled from 24 to 13°C at a rate of 215 kg/h by a refrigeration system. The power input to the refrigerator is 1.4 kW. Determine the rate of cooling, in kJ/min, and the COP of the refrigerator. The specific heat of banana above freezing is 3.35 kJ/kg·°C.
A classroom has dimensions 8.00 m x 10.00 m x 3.00 m. A 1000 W electric space heater is being used to warm the room from 5.00°C to 20.00°C on a cold morning. If the density of air is 1.29 kg/m°, and the specific heat capacity of air is 1004 J/(kg-K), how long will it take to heat the room? Assume no loss of thermal energy to the surroundings. A) 1.30 minutes B) 241 minutes C) 45.3 minutes O D) 77.7 minutes
When resting, a person has a metabolic rate of about 4.2 x 10 5 J/h. The person is submerged neck deep into a tub containing 1.0 x 10 3 kg of water at 27.00 °C. If the heat from the person goes only into the water, find the water temperature after half an hour.
A total of 0.8 Kg of water at 20 oC is placed in a 1.2 KW electric kettle. How long a time in unit hour is needed to raise the temperature of the water to 100oC? The specific heat capacity of water is cwater = 4.184 KJ/Kg Co.
A cylinder of fixed capacity 66.4 litres contains helium gas at standard temperature and pressure. What is the amount of heat needed to raise the temperature of the gas in the cylinder by 18.0 °C ? (R = 8.31 J mol-1 K-1).
21.0 g of copper pellets are removed from a 300C oven and immediately dropped into 70.0 mL of water at 17.0C in an insulated cup. copper = 385 (J/kg K) water = 4190 (J/kg K) What will the new water temperature be? Express your answer with the appropriate units.
A brass cube has an edge length of 33.2 cm at 20.0°C. Find (a) the increase in surface area and (b) the increase in volume when it is heated to 75.0°C.
A heat pump using refrigerant-134a heats a houseby using underground water at 8°C as the heat source. Thehouse is losing heat at a rate of 60,000 kJ/h. The refrigerantenters the compressor at 280 kPa and 0°C, and it leavesat 1 MPa and 60°C. The refrigerant exits the condenserat 30°C. Determine (a) the power input to the heat pump,(b) the rate of heat absorption from the water, and (c) theincrease in electric power input if an electric resistanceheater is used instead of a heat pump.
When resting, a person has a metabolic rate of about 7.030 x 10° joules per hour. The person is submerged neck-deep into a tub containing 2.130 x 10° kg of water at 26.30 °C. If the heat from the person goes only into the water, find the water temperature in degrees Celsius after half an hour, Number Units eTextbook and Media Attempts: unlimited Submit Answer Save for Later
The mass of a hot-air balloon and its cargo (not including the air inside) is 200 kg. The air outside is at 10.0C and 101 kPa. The volume of the balloon is 400m3 . To what temperature must the air in the balloon be warmed before the balloon will lift off? (Air density at 10.0 C is 1.244kg/m3 .)
A water heater has a power of 800 watts. It is connected to 220 volts and then submerged in 20 liters of water having an initial temperature of 15 o C The watercontainer absorbs 100% of the heat developed. Neglecting heat lost to thesurrounding air, how much time will it take for the water to reach a temperature of60°C?

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