Category: Physics

Why does the small pebble sink in water? The reason that most rocks sink is because of the law of buoyancy, which is all about how things float or sink. This law is also called Archimedes’ Principle. Archimedes’ Principle says this: An object will float if it displaces as much water as it weighs. Why […]

What does it mean if a charge is in equilibrium? Equilibrium condition states that the magnitude of force F1 and magnitude of force F2 should be equal to one another. How does the electric field due to an infinite line of charge vary with the distance from the line? We have found that the electric […]

Which state of matter has the most kinetic energy? gaseous Do liquids have kinetic energy? Liquids have more kinetic energy than solids. If you add heat energy to a liquid, the particles will move faster around each other as their kinetic energy increases. Some of these particles will have enough kinetic energy to break their […]

What is a good title for a lab report? The title says what you did. It should be brief (aim for ten words or less) and describe the main point of the experiment or investigation. An example of a title would be: “Effects of Ultraviolet Light on Borax Crystal Growth Rate”. If you can, begin […]

What is the example of physical change and chemical change? Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc. Generally, physical changes do not involve the production of energy. What is the most […]

Is timeout a positive or negative punishment? In Applied Behavior Analysis verbiage (ABA), time out is considered a negative punishment procedure. The “negative” means something is removed and the “punishment” refers to decreasing a behavior. Although time-out can be an effective tool to reduce problem behavior, there are times when time-out is not appropriate. What […]

Can human eye see real images? The cornea and lens of an eye act together to form a real image on the light-sensing retina, which has its densest concentration of receptors in the fovea and a blind spot over the optic nerve. The power of the lens of an eye is adjustable to provide an […]

What do you know about the Milky Way? The Milky Way is a large barred spiral galaxy. All the stars we see in the night sky are in our own Milky Way Galaxy. These stars form a large disk whose diameter is about 100,000 light years. Our Solar System is about 25,000 light years away […]

What type of energy does a roller coaster have at the top of a hill? kinetic energy Does a roller coaster have mechanical energy? They make each hill that follows smaller to compensate for this decrease in mechanical energy. Eventually the roller coaster changes most of its mechanical energy and is able to come to […]

How many years will it take to clean the ocean? How long will it take to clean up a gyre? A complete cleanup of a gyre is unrealistic, but calculations show we can clean up 50% of the Great Pacific Garbage Patch five years from full-scale deployment of our systems. Why are ocean gyres important? […]