Category: Physics

Does convex lens converge light rays? Because a convex lens concentrates the light rays that are incident on it, it is called a converging lens. The bending of rays is maximal at the top and bottom of the lens. The distance from the optical center to the focal point is called the focal length of […]

What are circuits in physics? A circuit is a closed loop that electrons can travel in. A source of electricity, such as a battery, provides electrical energy in the circuit. The appliance may, for example, provide light or heat or mechanical energy. What is short circuit in physics? A short circuit (sometimes abbreviated to short […]

Does it take energy to freeze water? It takes 100 calories to heat 1 g. water from 0˚, the freezing point of water, to 100˚ C, the boiling point. However, 540 calories of energy are required to convert that 1 g of water at 100˚ C to 1 g of water vapor at 100˚ C. […]

Can you run 2 stroke gas in a 4 stroke? You can run a 4 stroke motor with fuel youve mixed for a 2 stroke. You may have oil smoke from the exhaust or foul plugs over some time, but it wont hurt the engine. You cannot run diesel fuel in a gas engine or […]

Are ecoregions bigger than ecosystems? An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. What is an example of an ecoregion? Ecoregions are defined by soil type, climate, temperature, precipitation and other characteristics. For […]

How can a wheel and axle help us? In addition to reducing friction, a wheel and axle can also serve as a force multiplier, according to Science Quest from Wiley. If a wheel is attached to an axle, and a force is used to turn the wheel, the rotational force, or torque, on the axle […]

What food has a high pH level? Fruits and fruit juices high in acid lemon juice (pH: 2.00–2.60) limes (pH: 2.00–2.80) blue plums (pH: 2.80–3.40) grapes (pH: 2.90–3.82) pomegranates (pH: 2.93–3.20) grapefruits (pH: 3.00–3.75) blueberries (pH: 3.12–3.33) pineapples (pH: 3.20–4.00) What should I eat if I have too much stomach acid? Here are five foods […]

How harmful is radiation from cell phones? Cell phones emit low levels of non-ionizing radiation when in use. The type of radiation emitted by cell phones is also referred to as radio frequency (RF) energy. As stated by the National Cancer Institute, “there is currently no consistent evidence that non-ionizing radiation increases cancer risk in […]

Is longshore drift good or bad? Longshore drift plays a large role in the evolution of a shoreline, as if there is a slight change of sediment supply, wind direction, or any other coastal influence longshore drift can change dramatically, affecting the formation and evolution of a beach system or profile. What’s the difference between […]

What are two factors that affect the force of gravity between two objects? When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the […]