The figure below shows two 50 N weights connected to opposite sides of a scale by ropes passed over pulleys. What will the scale read? scale 50 N 50 N O 200 N O 25 N O 50 N O ON 100 N

Q: Why the Peeps get bigger in the vacuum chamber?  What gas law is demonstrated in this demo?  And…

A: Peeps expand under vaccum or get bigger in vaccum chamber. At equilibrium a peep has the same…

Q: What is vulnerabilty of security guards during heat waves? What  problems they might face during…

A: Heat is just energy in transit. When it is not moving it is thermal energy. It is that heat flows…

Q: Briefly outline the steps that occur to produce cloud-to-ground lightning.

A: In summer the suns energy heats the earth surface, which in terns heats the atmosphere near it.…

Q: What is vulnerabilty of security guards during heat waves? What problem they might face during heat…

A: Heat is just energy in transit. Flow of energy thermal is heat. It increases temperature. It flows…

Q: Where have you heard the word calorie before? What do you think a calorie is?

A: Calorie: We can study calories in science. It is a small unit of Energy. Using calories we explain…

Q: What is n an adiabatic process?

A: Adiabatic process refers to the thermodynamic process in which there no transmission of heat or work…

Q: Describe the energy stores and tranfers that occur when balloon is burst.

A: When a balloon is stretched, then work is done against the elastic force of balloon and hence,…

Q: Seect he bet aner tor he queon 3. The red question marks in the figure indicate OA um ar OB…

A: Return Air is placed at the top side. Return Air also known as explosion vent because it…

Q: In addition to a thermostatically operated home heating system, identify two other feedback control…

A:

Q: What issues do rising rooftops present for firemen?

A: Concept used: Rising rooftops cause hazards to firemen.

Q: 1. determine Miller indices for the plan shown bellow:

A: Required :: Miller indices of the plane.

Q: Discuss why a 1-ft2 hole in a ceiling that admits sunlight when the Sun is overhead is like having a…

A:

Q: What is the difference between an adiabatic wall and a diathermic wall?

A: Difference between an adiabatic wall and a diathermic wall is:

Q: If the energy received by 6 m? area in 11 minutes is 4400KJ. Calculate the value of Solar constant ?

A: Given data :       Energy  =  E          Time  =  t            Area  =  A         To find :…

Q: What is the critical radius of insulation? How is it defined for a cylindrical layer?

A: To describe Critical Radius

Q: If you emit energy like a 100 Watt light bulb, how many JOules do you emit in a day ? - 86,400J…

A:

Q: dex

A: Answer is explained below with proper explanation.

Q: leof is exposed at above renctiation ot 20° to the horizontal bare Soil mnder overcast sky. Ineident…

A:

Q: -252.87 celcius into kelvin

A:

Q: On a cold winter night, a story comes on the news at stations across the northern part of Florida…

A: The recommendation to turn on outside faucets to allow a slow drip of wateris because d. it prevents…

Q: What occurs when air is subjected to less pressure? The air becomes compressed. B. The air expands.…

A: GIVEN: The relation between temperature and pressure is given as  P1T1=P2T2 i.e. when the pressure…

Q: On a cold winter night, a story comes on the news at stations across the northern part of Florida…

A: there are two important properties of water that are relevent here:-1. Running water is difficult to…

Q: Why do we feel hot after a long period of running or doing exercise?

A: When we do running or any exercise, it will lead to increase in the muscular activity.

Q: How different types of transportation make use of thermodynamics?

A: The movement of people, goods, and animals, etc. from one place to another place in the world is…

Q: You can determine wind direction by wetting your finger and holding it up in the air. Explain.

A: The sensation of feeling cold is due to the removal of the heat from the body. The transfer of heat…

Q: When water heats up, then cools and sinks, like in the Water Cycle, this is an example of O…

A: When water heats up then the molecules of water gets heat energy and changes its phase from liquid…

Q: What is a regenerative heat exchanger? How does a static type of regenerative heat exchanger differ…

A: A regenerative heat exchanger, or commonly a regenerator, is a type of heat exchanger.

Q: Why is it safe to remain inside a car during a lightening storm?

A: During a lightning storm, it is safer to sit inside a car rather than standing under a tree. This…

Q: Suppose the hot cocoa loses 100J of energy by heating. How much energy does the air gain?

A:

Q: Why do we wear woollen clothes in winter?

A: During winter season the human body temperature increases to the environmental temperature and heat…

Q: Provide a definition and example for the first two laws of thermo dynamics

A: First law of Thermodynamics: The first law of thermodynamics states that when a system is…

Q: If the energy received by 5 m? area in 10 minutes is 3890KJ. Calculate the value of Solar constant ?

A:

Q: How would increasing the temperature of the compressed air affect the pressure in the can? Explain…

A: Explaining the concepts,increasing the temperature of the compressed air affect the pressure.

Q: Ca;culate the engergy required to raise the temperature of 2.8 kg of water from 20 degrees C to 100…

A: 2.8 kg of water from 20 degrees C to 100 degrees

Q: Why does the weather become very cold after a hail storm?

A: Ice absorbs a large amount of Latent heat from the surroundings to melt. There is a lot of heat in…