Category: Physics

What are the 4 types of interstellar gas? In astronomy, the interstellar medium (ISM) is the matter and radiation that exist in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. Is a large cloud of dust? A […]

What is it when a car speeds triples its kinetic energy? When a car’s speed doubles, what happens to its kinetic energy? When its speed triples? If a car’s speed doubles, its kinetic energy increases by 4, if its speed triples then the kinetic energy increases by 9. At what point in its trajectory does […]

Could I speak with or can I speak to? In both the cases, the meaning is “have a conversation with somebody.” The difference is that speak to (or talk to) is less polite, since it put the emphasis on one doing the conversation, while speak with (or talk with) is more polite, since it doesn’t […]

What are the two main means of measuring personality? There are two basic types of personality tests: self-report inventories and projective tests: Self-report inventories involve having test-takers read questions and then rate how well the question or statement applies to them. Which of the following is not part of the five factor model of personality? […]

Which type of waves is important to have for a surfer who wants to do aerial maneuvers answers? 2. Abrupt changes in depth, such as those caused by underwater reefs or sandbars, give rise to steep plunging waves. They’re the kind of waves a surfer needs to launch aerial maneuvers. What activity does Lucy start […]

What factors cause differential heating? Differential heating The curvature of the Earth results in spreading out of solar energy towards the poles and a concentration near the equator. The curvature of the Earth results in solar energy having a larger amount of atmosphere to travel through to reach the Earth’s surface near the poles than […]

Do magnets stick to steel? Explain to the students that there is only one kind of metal that magnets stick to, namely iron. Sometimes it is mixed with other metals to make steel, therefore steel also sticks to a magnet. Therefore, if a magnet sticks to an object, the object is iron or steel. Can […]

What is the difference between halogen and noble gas? Halogens are Group 7 elements while noble gases are Group 0 elements. While some halogens, such as fluorine and chlorine are reactive chemical substances, all noble gases are inert, which means they do not react with other elements readily. This also explains why noble gases are […]

Does the strong nuclear force exist? The strong nuclear force is one of the four fundamental forces in nature; the other three are gravity, electromagnetism and the weak force. As its name implies, the strong force is the strongest force of the four. It is responsible for binding together the fundamental particles of matter to […]

What is percentile in normal distribution? A percentile is the value in a normal distribution that has a specified percentage of observations below it. Percentiles are often used in standardized tests like the GRE and in comparing height and weight of children to gauge their development relative to their peers. What is the formula of […]