Category: Physics

What is the color of the solution when AgNO3 is mixed with NaCl? For example, when an aqueous solution of silver nitrate (AgNO3) is added to the aqueous solution of sodium chloride (NaCl), a white precipitate of silver chloride (AgCl) is formed that is indicated by the following chemical reaction. What are the products of […]

What is a black body topper? An ideal body which is a perfect absorber and perfect emitter of radiation is called a black body. When such a body is heated it becomes red hot . What is black body Toppr? a black body looks black because it absorbs light of all colors. so when it […]

Should I have airplane mode on or off? One way to help slow down battery drain is to turn Airplane Mode on. When your iPhone is on, even with the screen off, it is constantly searching for and monitoring data connections. Turning those connections off through Airplane Mode will save battery, allowing you to make […]

Why does the speedometer of a car read instantaneous speed? The speedometer of a car read the instantaneous speed not the average speed. We know that average speed is the ratio of total distance to the total time.It changes during when the car is moving . What does the speedometer of the car measure? Speedometer, […]

What is an electron changing energy levels called? If an atom, ion, or molecule is at the lowest possible energy level, it and its electrons are said to be in the ground state. If it is at a higher energy level, it is said to be excited, or any electrons that have higher energy than […]

Can water be affected by a charged rod? Yes! Water is a polar molecule which means that one side is postively charged and the other negatively charged. A charged rod can attact one side of the water molecule. When you run a thin stream of water and place a charged rod near it, the water […]

How do you measure high temperature? Pyrometer, device for measuring relatively high temperatures, such as are encountered in furnaces. Most pyrometers work by measuring radiation from the body whose temperature is to be measured. How do you measure temperature over 100 degrees? Fahrenheit and Celsius are two different scales for measuring temperature. A thermometer measuring […]

What is the major source of energy for living organisms? The Sun What is importance of classification? Three importance of classification are: It helps in the identification of living organisms as well as in understanding the diversity of living organisms. To understand and study the features, similarities and differences between different living organisms and how […]

What kinds of sensory receptors are in the skin? The sensory receptors in the skin are: cutaneous mechanoreceptors. Ruffini’s end organ (skin stretch) End-bulbs of Krause (Cold) Meissner’s corpuscle (changes in texture, slow vibrations) Pacinian corpuscle (deep pressure, fast vibrations) thermoreceptor. nociceptors. chemoreceptors. What are the four general senses? The general senses are pain, temperature, […]

How do people eat in space? Astronauts mainly drink water while in space, but flavoured drinks are also available. Freeze-dried drink mixes such as coffee or tea, lemonade and orange juice are provided in vacuum sealed pouches. The astronauts then add water to the beverage pouch through the pressurised hose and suck the drink through […]