Category: Physics

How long does it take to stop your car at 55 mph? about 6 seconds When driving at 55 mph How many feet do you need to stop? 300 feet What do anti lock brakes allow you to do? Anti-lock brakes prevent the wheels from locking up during heavy braking, allowing for maintained contact with […]

Are any goods perfectly elastic? If demand is perfectly elastic, it means that at a certain price demand is infinite (A good with a very high elasticity of demand). In other words, if a firm increased the price by 1%, it would see all its demand evaporate. Is coffee elastic or inelastic? Availability of Substitutes […]

What are interference colors? Definition. Liquitex® Interference Colours are colourless, transparent paints made from titanium coated mica flakes rather than traditional pigments. They are also known as “Opalescent Colours.” They change their colour (exhibiting a metallic look and colour shift) depending upon the viewing angle. What causes interference colors? Interference Colors Produced by Polychromatic Light […]

How much pollution does energy produce? It’s a significant body of data given that power generation accounts for about a quarter of global carbon dioxide emissions at 10 billion tonnes per year. Over a quarter of that comes from the 8000 power plants in the United States, making its energy sector the biggest carbon emitter […]

What is Hertz formula? We denote frequency by Frequency is measured in Hertz = Hz = 1/seconds. If a wave with a wavelength of 2 meters is going by at a speed of 6 meters/second, then 3 complete waves go by in 1 second. That is, the frequency is 6/2 = 3 waves/second, or 3 […]

Is it safe to use a microwave that has peeling paint inside? If the coating is actively flaking or paint is peeling anywhere inside the oven cavity (including under the turntable) discontinue the use of the microwave and replace it. The microwave is not repairable. The inadvertent ingestion of small amounts of peeling coating does […]

What is Arcsin equal to? arcsin sin30 = 0.5 Means: The sine of 30 degrees is 0.5 arcsin 0.5 = 30 Means: The angle whose sin is 0.5 is 30 degrees. How do you calculate Arcsin? arcsin is defined to be the inverse of sin but restricted to a certain range. Hence arcsin(sin(x))=x if x […]

Why do I cry when I yawn? Our eyes need to stay wet, so these glands produce tears all the time to slowly release onto our eyes. When we yawn, our face muscle contract and put pressure on the tear glands. This causes them to release excess tears. Together, this means that your eyes water […]

How do you revise physics for NEET in 1 month? Question-Based Revision: To revise a particular chapter/topic/unit from Physics or Chemistry, choose 45-50 random MCQ questions (as per NEET exam pattern) from that chapter/topic/unit and solve them in 45 minutes. Which is easy NEET or JEE? It’s tough to compare the two examinations. As per […]

What is heat What are the various sources of heat? The heat energy which is obtained from earth is called geothermal energy. It can be found in hot water and rocks present underground. Heat is also found in the form of molten rocks and magma, deep inside the Earth’s crust. Air is also an important […]