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 […]
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 can be separated into several elements?
What can be separated into several elements? Compounds Can two elements form more than one compound? Law of multiple proportions, statement that when two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small […]
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 […]
How cold does an airplane cargo hold get?
How cold does an airplane cargo hold get? Cargo temperatures vary in our fleet. The Boeing 767 maintains its baggage hold above 7˚C, but the bulk area (where animals are carried) can be heated above 18˚C. Controlled temperature cargo bins are also available when temperature-sensitive goods are being shipped. Is it safe to fly your […]
What will be the angle of reflection when angle of incidence is 60?
What is the relationship between the sun and the atmosphere?
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 […]
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 […]
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 […]
Which compound would have a stronger ionic bond?
Which compound would have a stronger ionic bond? Alf3 Why do some ionic compounds have low melting points? The melting and boiling points of molecular compounds are generally quite low compared to those of ionic compounds. This is because the energy required to disrupt the intermolecular forces between molecules is far less than the energy […]