Why did NASA stop using space shuttles? In 2004, President Bush gave a speech that outlined the end of the shuttle era, without clearly identifying what would come next (or how much it would cost). This decision left NASA in limbo, as they were suddenly dependent on the Russians for access to space. Is the […]
What are the two most important properties of stars?
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 […]
What would a historian most likely do to piece together clues about the human past quizlet?
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 can cause a population to be in a uniform distribution?
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 […]
Can we sleep during grahan?
Can we sleep during grahan? Among many things, people often wonder if they can sleep during the solar eclipse. However, it is a myth that says one should not sleep during a solar eclipse. As per a study, solar eclipse causes daytime darkness, which affects the sleep pattern. Why solar eclipse is dangerous? During a […]
Is running 3km a day enough?
What will be the angle of reflection when angle of incidence is 60?
What is the direction of average velocity?
What is the direction of average velocity? Average velocity is the ratio of total displacement to total time. Its direction is the same as the direction of the moving object. Even if the object is slowing down, and the magnitude of the velocity is decreasing, its direction would be still the same as the direction […]
What is a good U value for insulation?
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 […]
Is the moon slowly turning red?
Is the moon slowly turning red? The moon is turning ever so slightly red, and it’s likely Earth’s fault. Our planet’s atmosphere may be causing the moon to rust, new research finds. Rust, also known as an iron oxide, is a reddish compound that forms when iron is exposed to water and oxygen. Do windows […]