Category: Physics

What 3 things must you have with you when you drive? You should always keep three items in your car. Your vehicle registration and proof of insurance can stay in the glove box or someplace else where they will be easy to find and hard to lose. Your driver’s license is the third thing, and […]

What are 3 types of ocean currents? Two major kinds of currents define the planet’s oceans: surface currents driven by wind and deep-water currents driven by variations in seawater density. Surface Currents. ••• Deep-water Currents. ••• Measuring Currents. ••• Currents vs. Tides. Ocean Currents & Humankind. ••• What 3 things are ocean currents controlled by? […]

What is the reaction pathway that absorbs energy? endothermic What type of reaction releases energy and does not require initial energy to occur? Chemical reactions Is δg positive or negative? Below 373.15 K, ΔG is positive, and water does not evaporate spontaneously. Instead, water vapor at a temperature less than 373.15 K and 1 atm […]

Why night sky is black? At night, when that part of Earth is facing away from the Sun, space looks black because there is no nearby bright source of light, like the Sun, to be scattered. If you were on the Moon, which has no atmosphere, the sky would be black both night and day. […]

How are mass and size related? Is mass the same as size? No, mass is different than size or volume. This is because the type of atoms or molecules as well as their density helps to determine the mass. For example, a balloon filled with helium will have much less mass than a similar sized […]

Does Harvard accept homeschoolers? What if I am homeschooled? Each applicant to Harvard College is considered with great care and homeschooled applicants are treated the same as all other applicants. There is no special process, but all relevant information about your educational and personal background is welcome. Is it harder to get into college if […]

What does C stand for in the Clausius Clapeyron equation? integration constant Does higher vapor pressure mean lower boiling point? The vapor pressure of a liquid lowers the amount of pressure exerted on the liquid by the atmosphere. As a result, liquids with high vapor pressures have lower boiling points. Vapor pressure can be increased […]

Is shortwave radio AM or FM? Marine radio uses FM except for long range marine that uses SSB a derivative of AM. And SSB is still the main transmit mode choice by a huge population of amateur radio operators. And most shortwave (SW) broadcasting is still AM. AM radio is talk radio, that is, news, […]

How did Apollo 13 simulate zero gravity? Apollo 13 is the only theatrical film I’ve ever heard of in which weightlessness was filmed for real—by shooting key scenes 25 seconds at a time, using a set flown inside an aircraft flying parabolas. This is the same way astronauts train for weightlessness. What language does Kwesi […]

What are the 5 environmental factors? To get a better idea of how they affect a firm’s marketing activities, let’s look at each of the five areas of the external environment. The Political and Regulatory Environment. The Economic Environment. The Competitive Environment. The Technological Environment. The Social and Cultural Environment. What are the five major […]