Category: Physics

What are some similarities and differences between physical and chemical weathering? While physical weathering breaks down a rock’s physical structure, chemical weathering alters a rock’s chemical composition. Physical weathering works with mechanical forces, such as friction and impact, while chemical weathering takes place at the molecular level with the exchange of ions and cations. Why […]

How do you increase surface area? The rate of a chemical reaction can be raised by increasing the surface area of a solid reactant. This is done by cutting the substance into small pieces, or by grinding it into a powder. How can you increase the surface area of water? Surface tension is the energy […]

What is the best form of power? According to the study, nuclear power is by far safest power source in the world — 40% less deadly than the next safest, wind. What is the greenest fuel? Gas burns cleanly with no soot or ash, and therefore produces lower emissions than oil for example. It is […]

Why does temperature increase with mass? If density increases ,volume decreases and if density decreases , volume increases. So density*volume=mass remains same as before. Gravitational pressure increases the more mass there is, and that pressure creates energy that increases temperature. Why does it take longer to heat up a larger volume of water? Simple: you’re […]

What is the conversion factor between km H 2 and M S 2? 1 Kilometer per Hour Squared: Acceleration of 1 kilometer per hour per hour. 1 Kilometer per hour squared is equal to 1/12960 meters per second squared (SI unit). 1 km/h2 = 0.000 077 160 4938 m/s2. What is a conversion formula? The […]

Is 50 hp enough for a motorcycle? 50 HP will do about anything I want running single and do pretty well two up, but when you get a 800 lb bike loaded down with 2 people and a weeks worth of luggage and 80 mph speed limits, 100 hp is real nice to have. What […]

Is nitrogen harmful to humans? High concentrations of nitrogen gas can be particularly harmful to human health. Nitrogen can displace oxygen from ambient air within an enclosed space leading to a dangerous build-up of the inert gas. Is nitrogen safe to consume? Liquid nitrogen, although non-toxic, can cause severe damage to skin and internal organs […]

What are the types of radio stations? Different types of radio Conventional FM: As previously mentioned, conventional FM is a popular technology in analog radio. MPT1327: Perhaps the most widely used analog trunking technology today is called MPT 1327. Tetra: As the world becomes more digital, a number of digital radio technologies have emerged. Who […]

How are the two variables associated with each other? Association between two variables means the values of one variable relate in some way to the values of the other. Association is usually measured by correlation for two continuous variables and by cross tabulation and a Chi-square test for two categorical variables. What can be used […]

What is one effect of the uneven heating of Earth caused by the sun? Usually when we talk about uneven heating of the Earth’s surface we are discussing convection. The uneven heating results in some of the atmosphere to be warmer than other parts and changes in volume and pressure which result in updrafts and […]