Category: Physics

What happens when you remove heat from a metal rod? After the heat source is removed, the bar starts to cool down immediately. However, this only means the average temperature of the bar is decreasing. As long as there is a temperature difference, heat will continue to flow from the hotter to the colder regions. […]

What is the pressure on a swimmer 20m below the surface of a lake? =3 atm. Was this answer helpful? What is the pressure on a Sumit and below the surface of a lake? The pressure on a swimmer 10 m below the surface lake is:(Atmospheric pressure = 1.01 × 10^5 Pa,Density of water = […]

What are the benefits of Queen of the Night flower? Its believed to be used as a topical application medicine for rashes. Some of the primitive Americans have used it for fever treatment. The stem of the plant is used for treating diabetes. It is known for the treatment of hemoptysis and edema. How long […]

Why is halite not a silicate mineral? Many non-silicate minerals are economically important and provide metallic resources such as copper, lead, and iron. They also include valuable non-metallic products such as salt, construction materials, and fertilizer….3.5: Non-Silicate Minerals. Mineral Group Halides Examples halite, sylvite Formula NaCl, KCl Uses Table salt, fertilizer What is not a […]

Why is insolation greatest when the sun is overhead? Insolation depends on the angle of the Sun above the horizon. It is greatest when the Sun is directly overhead, and it decreases when the Sun is low in the sky, since the same amount of solar energy is spread out over a greater area of […]

Does a bathroom scale measure mass or weight? Scales measure weight, which is the force acting on a mass that is equal to the object’s mass times its acceleration due to gravity. A scale can’t measure mass directly, because the weighing mechanism and the weight of any given object are dependent on local gravity. Why […]

What is critical angle with diagram? Include a ray diagram to explain the concept. The critical angle occurs when the angle of incidence where the angle of refraction is 90°. The light must travel from an optically more dense medium to an optically less dense medium. What is the value of refractive index and critical […]

Is the asteroid belt a failed planet? Most astronomers today believe that the asteroids in the main belt are remnants of the protoplanetary disk that never formed a planet, and that in this region the amalgamation of protoplanets into a planet was prevented by the disruptive gravitational perturbations of Jupiter during the formative period of […]

Are blue reverse lights legal? Blue reverse lights could really screw you up if you are backing up at night and you run over somebody or some car runs into you cause they did not know you are backing up. License plate lights that are blue are also against the law! Just don’t do it. […]

How are GPS used today? Surveyors, scientists, pilots, boat captains, first responders, and workers in mining and agriculture, are just some of the people who use GPS on a daily basis for work. They use GPS information for preparing accurate surveys and maps, taking precise time measurements, tracking position or location, and for navigation. What […]