Category: Physics

What would a historian most likely do to piece together clues about the human past quizlet? A historian most likely would piece together clues about the human past by studying written records. What kinds of excavations might be found underwater? As a result, underwater archaeological sites cover a vast range including: submerged indigenous sites and […]

What happens if 2 objects have the same speed but different velocities? Objects have the same velocity only if they are moving at the same speed and in the same direction. They represent objects that have different velocities only because they are moving in different directions. A and C represent objects that have different velocities […]

What can cause a population to be in a uniform distribution? Uniform patterns of dispersion are generally a result of interactions between individuals like competition and territoriality. Clumped patterns usually occur when resources are concentrated in small areas within a larger habitat or because of individuals forming social groups. What are the factors for population […]

Is running 3km a day enough? Your body will become increasingly able to run 3km. That’s not very far, in terms of exercise. A little under 2 miles, or, at most folk’s running pace, perhaps 16–20 minutes of work. That’s not bad… But for many people once you got to that point it would be […]

What is the relationship between the sun and the atmosphere? The Sun warms our planet, heating the surface, the oceans and the atmosphere. This energy to the atmosphere is one of the primary drivers our weather. Our climate is also strongly affected by the amount of solar radiation received at Earth. How does the ocean […]

Are all atoms the same in an element? Yes, all things are made of atoms, and all atoms are made of the same three basic particles – protons, neutrons, and electrons. But, all atoms are not the same. You know that the number of protons in an atom determines what element you have. What property […]

Are of light strikes a plane mirror at an angle of 40 degree to the mirror surface What will be the angle of reflection? A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection? Now, we know that according to the […]

What is a good U value for insulation? The best insulating materials have a U-value of close to zero – the lower the better. Building regulations currently stipulate that for a new building, the elements must have maximum U-values as follows: Wall – 0.3 W/m2k. Roof – 0.15 W/m2k. What is the most energy efficient […]

Do turbo engines have more problems? Turbo engines tend to have more problems in many cars, although there are turbocharged engines that are reliable. A turbocharged engine has more components than a naturally-aspirated (non-turbo) motor. A turbocharger itself is not uncommon to fail. The more parts, the more can go wrong. How long should you […]

What are the two most important properties of stars? A star can be defined by five basic characteristics: brightness, color, surface temperature, size and mass. Brightness. Two characteristics define brightness: luminosity and magnitude. Color. A star’s color depends on its surface temperature. Surface Temperature. Size. Mass. What is the most important characteristic of a star […]