Why does ball pen ink written on paper does not spread when water is spilled on it?

Q: Even though metal is a good conductor, frost can be seen on parked cars in the early morning even…

A: The radiation from the Sun will be absent early in the morning. Therefore, the surrounding…

Q: What does thermal interaction cause?

A:

Q: Would regelation occur if ice crystals did not have an open structure? Explain.

A: The structure of ice is similar to that of water molecules. There exist hydrogen bonds in ice…

Q: Standing in front of a fire, we can sense both its heat and its light. How are the light and heat…

A: Standing in front of a fire, we can sense both its heat and its light.  The light and heat radiated…

Q: Why does the balloon filled with water did not pop out like the balloon filled with air when it is…

A: Comparison between air balloon and water balloon:

Q: 5 bross @ oఁ 3004 Steel eKpa added to OF Steel@s0c 200c 900a water in an a lumininum ore pan of…

A: Given data:Mass of the brass, Mb = 500 g = 0.500 kgMass of the steel, Ms  = 300 g = 0.300 kgMass of…

Q: Though velocity of air molecules is about 0.5 km s -', the smell of scent spreads at a much slower…

A:

Q: Which represents a greater change in temperature: an increase of 1°C. 1'F, or 1 K?

A: Comparatively, the 1 degree rise in the Celsius is hotter than 1 degree rise in Fahrenheit as 1…

Q: The selective absorption of electromagnetic radiationby materials (can, cannot) be used as an aid…

A: Given:The selective absorption of electromagnetic radiation by materials (can, cannot) be used as…

Q: What does Radiation include?

A: One form of radiation is pure energy with no weight. This form of radiation known as electromagnetic…

Q: If you had beeswax attached to one end of a metal skewer and you placed the other end of the skewer…

A: As it is known that the metals are the good conductor of heat

Q: Why should we wear cotton clothes in summer?

A: We sweat more in the summer session. Cotton is a strong water absorber helps to absorb the sweat and…

Q: Why do you see a lemon as yellow?

A: We have broadly classified the cones in our human eye into red, green and blue in color.

Q: The power radiated per square centimeters * from skin at a temperature of 20°C is 0.041 watt per…

A: Area (A) = 1 cm2= 0.0001 m2Temperature of skin (T) = 20oC = 293 kelvin

Q: A match stick can be lighted by rubbing it against a rough surface, Why?

A: Upon the rubbing the match stick, work is converted to heat due to friction. The temperature of the…

Q: QlITheproduet of the two influences Choose the answe 4. HBTAt 2/8^ A^

A: It is a property of quantum mechanics.

Q: When fighting fires, a firefighter must use great caution to hold a hose that emits large amounts of…

A: The hose is pumping a lot of water with large mass at a high speed. This means that water has a…

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: All objects radiate energy?

A: Objects and different temperature emits radiation of different frequencies. Some fall in visible and…

Q: of sugar was dissolved in glass B and the laser light passes through it? When milk is added in glass…

A: solution of above problem is below:

Q: thundercloud was found 7km above the ground. At air temperature of 250C, what is the time difference…

A: Speed of light is much greater than speed of sound so you see lightning instantaneously but sound…

Q: Why is white wash sometimes applied to the glass of florists greenhouses in the summer?

A: A greenhouse traps heat inside it. Sunlight entering through the glass gets reflected inside the…

Q: Do flames contain plasma?

A:

Q: What is meant by temperature radiation?

A: When a matter having temperature greater than absolute zero, certain amount of electromagnetic waves…

Q: Why do we wear white or light coloured clothes in summer and dark coloured clothes in winter?

A: White or light coloured clothes reflects light, which is reflects heat. So it helps to possess our…

Q: What are energies possessed by liquid?

A: Energies possessed by liquid in motion are:

Q: What do you notice when you get into a car that has been sitting in the Sun for a while?

A: the inside of the car will warm because radiation is coming in but not much is going back out.

Q: What are physical changes of matter

A: To define: Physical changes of matter

Q: Steaming cup of hot tea Is this Conduction, convection, or radiation

A: Conduction-when heat passes through solid in which heat passes from one point to another by…

Q: Suppose you meet your friend at a pool party and you know that his mass is 65 kg. You have estimated…

A: The weight when immersed in the pool is equal to the actual weight (W = mg) less the buoyant force…

Q: Tin is used to coat “tin” cans used for food storage. If thetin is scratched and the iron of the can…

A: Tin or also called Stannum in Latin with the atomic number 50. Tin shows a chemical similarity to…

Q: What describes the ability of a substance to reflect solar radiation based on how light or dark it…

A: The term 'Albedo' is used to describe the amount of radiation reflected back by an object or…

Q: When does Radiation occur?

A: Finding when does Radiation occur