Category: Physics

Who is responsible for the correct weight and balance of every flight? pilot What happens if a plane is too heavy? If the plane is too heavily loaded, then you will be unable to take off. (You might be able to get a meter or two above the ground due to a phenomenon called “ground […]

How did Ptolemy discover refraction? The Roman astronomer Ptolemy first tried to experimentally derive the law of refraction in the 2nd century CE. Ptolemy measured the angle that a beam of light hits a boundary, the angle of incidence, and the angle at which it leaves, the angle of refraction, through different mediums. What skin […]

Is CN a ionic compound? It is an ionic compound composed of the sodium cation (Na+) and cyanide anion (CN-), in which the carbon has a triple bond with the nitrogen atom. What is the name for CN? Hydrogen cyanide What is the shape of CN? CN- has quite a simple structure to understand. It […]

Is Titan bigger than Mercury? Titan is larger than the planet Mercury and is the second largest moon in our solar system. Jupiter’s moon Ganymede is just a little bit larger (by about 2 percent). Titan’s atmosphere is made mostly of nitrogen, like Earth’s, but with a surface pressure 50 percent higher than Earth’s. Is […]

Does work increase as angle increases? As we increase the force’s angle with respect to the direction of motion, less and less work is done along the direction that we are considering; and more and more work is being done in another, perpendicular, direction of motion. When the angle is 90 degrees, the cosine term […]

Is 2021 a shorter year? The Earth is moving faster than it ever has in the last 50 years, scientists have discovered, and experts believe that 2021 is going to be the shortest year in decades. This is because the Earth is spinning faster on its axis quicker than it has done in decades and […]

Why do fires spread so quickly? If a spark happens in the presence of oxygen and fuel—such as dry grass, brush or trees—a fire can start. And conditions in the weather and environment can cause the fire to spread quickly. Fires need lots of fuel to grow. For example, drought, winds and extreme heat can […]

Can you present new evidence in an appeal? New evidence would be the focus of the trial courts. As a general rule, then, no new evidence can be presented to an appellate court in an appeal. The appellate court is confined to the evidence as the trial court was presented, so that the appellate court […]

What happens when a low pressure meets a high pressure? Places where the air pressure is high, are called high pressure systems. A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. Winds blow […]

What are vaporization 2 examples? The two types of vaporization are evaporation and boiling. Evaporation refers to the surface of a body of liquid turning into gas, such as a drop of water on the concrete turning into a gas on a hot day. Boiling refers to heating up a liquid until it releases vapor, […]