Category: Physics

What is a spring balance Class 8? Spring balance is a device used to measure the weight of small bodies. As the weigths are hung to the spring it stretches the the pointer indicates the weight hung or the force applied on the spring. The working principle of spring balance is Hook’s law. What is […]

Why are the first 3 years of life important? Recent research confirms that the first five years are particularly important for the development of the child’s brain, and the first three years are the most critical in shaping the child’s brain architecture. They have a direct impact on how children develop learning skills as well […]

How do pilots know where they are? Primarily, the “ILS,” as it is commonly known, consists of two radio beams emitted from transmitters right next to the runway. All pilots have to do is follow the beams down to 200 feet above the ground, at which point they must be able to see the runway […]

Is concrete strong in compression or tension? Concrete is a non-linear, non-elastic and brittle material. It is strong in compression and very weak in tension. It behaves non-linearly at all times. Because it has essentially zero strength in tension, it is almost always used as reinforced concrete, a composite material. Why is concrete better in […]

What happens if 2 vectors are perpendicular? If two vectors are perpendicular to each other, then their dot product is equal to zero. What is a vector diagram? Vector diagrams are diagrams that depict the direction and relative magnitude of a vector quantity by a vector arrow. Vector diagrams can be used to describe the […]

What is a reactant simple definition? The substance(s) to the left of the arrow in a chemical equation are called reactants. A reactant is a substance that is present at the start of a chemical reaction. The substance(s) to the right of the arrow are called products . A product is a substance that is […]

Does volume change in space? There is less air pressure in space, but astronauts don’t blow up like bubbles once they leave Earth’s atmosphere, so you can safely assume that the astronaut’s volume doesn’t really change either. If the mass and the volume don’t change on the moon, you can deduce that the astronaut’s density […]

What are the three types of flexible hose? Stainless Flexible Hoses (ss flex hose) can be categorized into 3 main pitch types in conformity with their intended uses: Wide, Standard and Closed (Compressed). What flare angle is used for aircraft fluid line fittings? General Questions for Aircraft Fluid Lines and Fittings Question Answer What is […]

What is an example of mechanical energy to heat energy? Rubbing your hands together converts mechanical energy to thermal energy. Turning on a light switch converts mechanical energy to electrical and radiant energy. Digesting food converts mechanical energy to chemical energy. What is the relationship between mechanical energy and heat? Mechanical energy can be converted […]

Is the movement of electrically charged particles? Electric current, any movement of electric charge carriers, such as subatomic charged particles (e.g., electrons having negative charge, protons having positive charge), ions (atoms that have lost or gained one or more electrons), or holes (electron deficiencies that may be thought of as positive particles). How does charge […]