How do you know if an image is real or virtual? (You will have no trouble remembering this if you think about it in the right way: a real image has to be where the light is, which means in front of a mirror, or behind a lens.) Virtual images are formed by diverging lenses […]
What would happen to pressure in the tire if some of the air were removed?
What would happen to pressure in the tire if some of the air were removed? The pressure inside the tire will keep on decreasing as more air leaks out of the tire because the number of air particles inside the tire decreases resulting in less collisions than before and due to the less frequent collisions […]
What does velocity relative to the ground mean?
What does velocity relative to the ground mean? The velocity of the object measured relative to the ground is called the ground speed. Again, this is a vector quantity. Airspeed is the vector difference between the ground speed and the wind speed. On a perfectly still day, the airspeed is equal to the ground speed. […]
What does tightening a string do?
What does tightening a string do? Tension refers to how tightly the string is stretched. Tightening the string gives it a higher frequency while loosening it lowers the frequency. When string players tighten or loosen their strings, they are altering the pitches to make them in tune. The density of a string will also affect […]
Is Q A joule or kilojoule?
What is the cheapest roof style?
What is the cheapest roof style? For most homeowners, the best bet is choosing an affordable, yet durable roofing system. Clay. Clay roofing systems are very captivating, cheap roofing materials. Asphalt. Asphalt is the cheapest of all roofing materials in the market. Metal. A range of affordable metal roofing systems are now available in the […]
How do you explain combustion?
How do you explain combustion? Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat. The original substance is called the fuel, and the source of oxygen is called the oxidizer. The fuel can be a solid, liquid, or gas, although for airplane propulsion the fuel is usually […]
Is nitrogen-14 an isotope?
Is nitrogen-14 an isotope? Nitrogen-14 is one of two stable (non-radioactive) isotopes of the chemical element nitrogen, which makes about 99.636% of natural nitrogen. Nitrogen-14 is one of the very few stable nuclides with both an odd number of protons and of neutrons (seven each) and is the only one to make up a majority […]
What are the 3 basic types of scaffolds in the construction industry?
What are the 3 basic types of scaffolds in the construction industry? Workers who use scaffolds can be divided into three groups: Suspended Scaffolds. Supported Scaffolds. Aerial Lifts. What is the narrowest scaffolding? Narrowest 600mm scaffold tower For our narrowest tower try the stair tower. It comes in a 600mm wide frame so it can […]
How do you know if you have inner ear damage?
How do you know if you have inner ear damage? Nausea or vomiting. Tinnitus or ringing in your ears. Hearing loss. Feeling of fullness in your ear. Is inner ear damage permanent? If treated promptly, many inner ear infections cause no permanent damage. In some cases, however, permanent loss of hearing or damage to the […]