Category: Physics

Why is the potential energy of a free particle zero? In quantum mechanics, it means the particle is in a region of uniform potential, usually set to zero in the region of interest since the potential can be arbitrarily set to zero at any point in space. … What is the energy of a free […]

What do you mean by C * * * * * * * * * Frequency? Technically, a cumulative frequency distribution is the sum of the class and all classes below it in a frequency distribution. All that means is you’re adding up a value and all of the values that came before it. Cumulative […]

Where is the thickest loess deposits found? Extensive loess deposits are found in northern China, the Great Plains of North America, central Europe, and parts of Russia and Kazakhstan. The thickest loess deposits are near the Missouri River in the U.S. state of Iowa and along the Yellow River in China. Is Loess erosional or […]

Is VX and VY constant? Here are some formulas that describe projectile motion: Thus the vertical velocity (Vy) is continually increasing. The horizontal velocity (Vx) remains constant and is equal to Vxo. If an object is pointed at an angle, the motion is essentially the same except that there is now an initial vertical velocity […]

How can we conserve water in our school? How can students save water at school? Simple Actions = Big Water Savings​ Carry a refillable water bottle. Skip the tray in the lunch line and use only one plate. Turn off the water when washing your hands. Report leaks to the appropriate authorities. In labs and […]

What is the relation between current and resistance? The relationship between current, voltage and resistance is expressed by Ohm’s Law. This states that the current flowing in a circuit is directly proportional to the applied voltage and inversely proportional to the resistance of the circuit, provided the temperature remains constant. What is a specific resistance? […]

What kind of image is formed with a pinhole camera? The image formed by a pin hole camera is real, inverted and the nature of the image does not depend on the shape of the pinhole. What kind of image does a pinhole camera produce? A pinhole camera is a simple camera without a lens […]

Can you open a safe with a rare earth magnet? With the help of rare earth magnets, opening a safe can take just seconds. At least that is what Terry Whin-Yates of Mr. He showed that, using a rare earth magnet, one can exploit the nickel piece in this Sentry Electronic Safe to get it […]

Why are batteries called AA? But the most significant difference is size because batteries are called AA & AAA because of their size and dimension. AA doesn’t stand for anything. It is simply an identifier for a battery of given dimensions and nominal voltage. Are C batteries the same as AA? AA batteries are the […]

What is a solubility graph? A solubility graph is drawn to display the solubility at different temperatures. From reading a solubility graph, one can determine the mass of solute that can dissolve at specific temperatures, whether or not a solution is saturated, and compare solubilities of different substances at specific temperatures. Which of the following […]