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. […]
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 […]
How do you know if an image is real or virtual?
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 are 5 PPE?
What are 5 PPE? PPE includes gloves, gowns, laboratory coats, face shields or masks, eye protection, resuscitation masks, and other protective gear such as hats and booties. What is PPE and examples? Personal protective equipment, commonly referred to as “PPE”, is equipment worn to minimize exposure to a variety of hazards. Examples of PPE include […]
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?
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 […]
Where is lead storage battery used?
Where is lead storage battery used? Lead–acid batteries are used in emergency lighting and to power sump pumps in case of power failure. Traction (propulsion) batteries are used in golf carts and other battery electric vehicles. Which cathode is used in lead storage battery? lead dioxide Why lead is used in batteries? Lead-acid batteries, also […]
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 […]