Category: Physics

Will it sink or float? Density is the only thing affecting whether something floats or sinks. If an object has a higher density than the fluid it is in (fluid can mean liquid or gas), it will sink. If it has a lower density, it will float. Density of an object is dependent on an […]

What is the formula of time speed distance? You can use the equivalent formula d = rt which means distance equals rate times time. To solve for speed or rate use the formula for speed, s = d/t which means speed equals distance divided by time. To solve for time use the formula for time, […]

Are lift and drag always perpendicular? The lift and drag forces are the direct result of the relationship between the relative wind and the aircraft. The lift force always acts perpendicular to the relative wind and the drag force always acts parallel and in the same direction as the relative wind. Does induced drag increase […]

What is meant by planetary motion? Kepler’s three laws of planetary motion can be stated as follows: (1) All planets move about the Sun in elliptical orbits, having the Sun as one of the foci. (2) A radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time. What […]

What is a serious concern of fires burning on a steep slope? Although fire doesn’t usually move downhill quickly, one serious concern about fires burning down steep slopes is the possibility of burning material rolling downhill, which can ignite fuels below starting another fire. What 3 weather factors are most important to firefighters? Weather conditions […]

Do you turn on headlights in rain? California. Headlights must be turned on when it’s raining, foggy, snowing, or even cloudy. If you must use your windshield wipers, you are required to have your headlights on. Headlights must be in use from 30 minutes after sunset until 30 minutes before sunrise. When should I use […]

Which insulator is the best? (PhysOrg.com) — With its complete lack of atoms, a vacuum is often considered to be the best known insulator. For this reason, vacuums are regularly used to reduce heat transfer, such as in the lining of a thermos to keep beverages hot or cold. What gases are good insulators? Down […]

What is the important of Periscope? The periscope is an instrument for observation over, around or through the object, obstacle or condition that prevents direct line-of-sight observation from the observer’s current position, The periscope is used to monitor the dangerous chemical reactions in the laboratory and they are used in observing the nuclear … What […]

Can you leave a plasma ball on overnight? Can you leave a plasma ball on for long periods of time? For most plasma balls, this isn’t a problem and you should be able to leave them on for as long as you wish. This is typically the case with plasma balls, as they’re not at […]

Can resources be both renewable and nonrenewable? Explanation Renewable resources cannot be replaced in our lifetime. Solar power, natural gas, and wood are all nonrenewable energy sources. Both renewable and nonrenewable resources should be conserved. People use resources from Earth every day. What are the similarities of renewable and nonrenewable resources? Renewable and non-renewable resources […]