In order to reduce the temperature of a room, O A. remove the heat from room O B. cool the room with some systems O. just increase the mass of the room. O D. just increase the pressure of the room air

Q: | نقطتان )2( -- drink lot of water because l .am thirsty must have to

A: I have to drink a lot of water because I am thirsty  here we need to use have to instead of must

Q: nagine you have a house with low over the roof with a speed

A:

Q: mass of hydrogen

A: m=0.19820Kg T2= 0.5478 K

Q: Find the equivalent 36F temperature change in C.

A:

Q: pressure that is less than atmospheric pressure is called what?

A:

Q: Specific gravity of an oil is 0.8. Find its weight density.

A: Specific gravity = 0.8

Q: the magnitude of gravitational force is?

A: Gravitational force: The magnitude of the gravitational force is the multiplication of the masses of…

Q: Sensible heat is the heat required to A. O Change vapour into liquid B. O Change liquid into vapour…

A: Solution:   Two forms of heat energy are: 1. Sensible Heat. 2. Latent Heat.

Q: When pressure is measured relative to zero pressure line, it is called as - Select one: O a. Gauge…

A: Solution:

Q: A vertical piston cylinder assembly has a diameter of 6 inches with gas inside the cylinder and an…

A: Option c is correct.

Q: A town has a O.5-million-gallon storage

A: F=4.1587*10^6 lbf

Q: :Coplanar force system means

A: The general definition of force: It is the capacity to do work.

Q: the molar percentage of N2

A: Given; Assuming complete combustion of methane,Determine the molar percenatge of N2 in the products…

Q: The coal consumption per hour is the ratio of heat of combustion and calorific value.

A: True

Q: a) Calculate the make up rate of the water by doing a material balance between the water stream and…

A: For set 1 , Mass flow rate of makeup water (m 1 makeup water) = m1 dry air *(ω1 B-ω1 A ) =…

Q: tell whether the if work is done by the system (-), work is done on the system (+), or no work done.…

A: Work done on the system – when the work is done by the surroundings on the system, then it is known…

Q: An apartment will have more than one center of gravity

A: Center of gravity is a ponit which the whole gravitational pull can be considered. It is such a…

Q: : Specific Heat of Liquids

A:

Q: 2: Specific Heat of Liquids

A: The amount of heat required to increase the temperature of one gramme of a substance by one…

Q: orking fluid liquid exits . Determine of the steam, boiler, in M

A: State 1 P1= 10 MPaX1= 1 }    h1= 2724.7 KJ/KgS1= 5.6141 KJ/kgk   State 2 P2= 0.006 MPaS1= S2  }…

Q: Describe a cup of hot coffee does not get hotter in a cooler room.

A: According to the law of thermodynamics, the heat is always flows from higher temperature to the…

Q: Calculate the rise in temperature of water w

A: To find Rise in temperature of water

Q: Water with a density of 1000 kg/m³ fills a 1.6 cubic meter tank. How much does the water weigh in…

A:

Q: Steam at a temperature of 250 has specific volume of 0.15436 what is the pressure

A:

Q: *.He enjoys a bath in the evening have O having O to have O

A: He enjoys having a bath in the evening.

Q: The control volume means changing the volume of a fluid at constant pressure Ture False O

A: Given Statement :-  The control volume means changing the volume of a fluid at constant pressure.…

Q: (d) 10 litres of water is heated from 15°C to 90°C how much heat is required?

A: For water : Specific heat (C) = 4.18 kJ/kg-K  Density = 1000 kg/m3 Given : Volume = 10 litre =…

Q: What is the amount of heat necessary to changethe state of a substance called?

A: Energy absorbed or released by a substance during a change in its physical state (phase) that…

Q: What is the effect of temperature on Kw

A:

Q: How to gas can follow several different paths as it expands from state 1 to state 2. In general,…

A: There are several ways gas can expands from state 1 to state 2. The path followed by the gas depends…

Q: duty of the heater in kW?

A: To find Duty of heater

Q: How much change in the power of wind will take place if wind velocity becomes 3 times

A:

Q: Heat flow into a system is taken to be- and heat flow out of the system is taken as Select one: O a.…

A: Heat flows into a system means the heat is added to the system. So, it is taken as positive.

Q: QUESTION 3 When valve A is closed, the pressure difference between A and B is -27 kPa. (11) Find h…

A: Pascal's law states that on a given horizontal plane of static fluid, a fluid particle experiences…

Q: 0/1 The weather has been hot. .many * weeks Since for to about

A: For is used in the sentence which talks about a period of time Example: for two hours for three…

Q: What is the size of the hot water cylinder in liters needed for 8 m solar collector? Select one: O…

A: Solution:

Q: A compressor increases the of a gas by its Select one: O a. pressure, increasing, volume O b.…

A:

Q: As more heat is transferred, part of the saturated liquid vaporizes (saturated liquid–vapor…

A: If we supply more heat in Saturated liquid-vapor mixture, the steam becomes superheated

Q: ol volume is

A: given: a control volume is?

Q: The percentage by volume of oxygen in ..atmospheric air is nearly

A: GIVEN DATA AN MCQ IS GIVEN ASKING % BY VOLUME OF OXYGEN IN ATMOSPHERE WE HAVE TO CHOOSE CORRECT…

Q: 2. Explain the operation of Thermal system with neat diagram

A: Thermal systems:-  Thermal systems are those that involve the storage and transfer of heat.  Heat…

Q: What is global warming? Write any two ways that how global warming is affecting the environments?

A: Global warming can be defined as the phenomenon of climate variation or change. It is characterized…

Q: all at A and swings in a vertic wing that it can withstand a

A: given:

Q: Acquire any floor plan of establishments and calculate it's tons of refrigeration.

A: Consider that a building needs 1 ton of refrigeration for 100 square ft. And each floor has a…

Q: internal energy of the gas during the process.

A: Given: Work required in a cylinder is compressed,Work required for compression being=7500 kJDuring…

Q: D°C DBT. The sensible heat of spac the space, calculate : a- mass of d

A:

Q: specific volume of oil is is 0.008 m³/kg, then the specific gravity is

A: Density: It is the mass per unit volume at a specific temperature and pressure. Density is defined…

Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.