What is it called when a straw bends in water? This bending of light, called refraction, causes the straw to look broken1. The portion of the straw that is submerged in water also appears to be wider than the portion of the straw above the water. Why does a spoon look broken in the water? […]
Which sample has the least number of atoms?
What are the 3 main forms of energy?
What are the 3 main forms of energy? Potential energy is stored energy and the energy of position. Chemical energy is energy stored in the bonds of atoms and molecules. Mechanical energy is energy stored in objects by tension. Nuclear energy is energy stored in the nucleus of an atom—the energy that holds the nucleus […]
Why do stars differ in brightness?
Why do stars differ in brightness? A star’s brightness also depends on its proximity to us. The more distant an object is, the dimmer it appears. Therefore, if two stars have the same level of brightness, but one is farther away, the closer star will appear brighter than the more distant star – even though […]
What is an exposure index?
What is an exposure index? The exposure index is currently a method by which digital radiography manufacturers provide feedback to the technologist regarding the estimated exposure on the detector, as a surrogate for image signal-to-noise ratio and an indirect indication of digital image quality. What are the different exposure indicators? The exposure indicator has as […]
When a charged particle enters a uniform magnetic field what is its speed?
When a charged particle enters a uniform magnetic field what is its speed? As it enters the uniform magnetic field within the solenoid, its speed is 800 m/s and its velocity vector makes an angle of 30° with the central axis of the solenoid. What is the change in kinetic energy of the particle entering […]
What are 4 examples of chemical properties?
What are 4 examples of chemical properties? Examples of chemical properties include flammability, toxicity, acidity, reactivity (many types), and heat of combustion. Iron, for example, combines with oxygen in the presence of water to form rust; chromium does not oxidize (Figure 2). Is color change a chemical property? Color. The changing of color of a […]
What is width and length?
What is width and length? 2. The Merriam-Webster dictionary defines width as the measurement of the shortest or shorter side of an object. Similarly the dictionary defines length as the longer or longest dimension of an object . In addition it also defined length as the longer or vertical piece of a clothing. What is […]
Why are acoustic strings thicker?
Why are acoustic strings thicker? Acoustic guitarists generally favour thicker strings as they provide more volume, warmth and resonance – key requirements for an acoustic instrument. It’s also less popular to bend strings, therefore sacrifice flexibility for tension. What gauge strings did Jimi Hendrix use? “We were using the normal one, not the very high […]
What are the three ways that machines make work easier?
What are the three ways that machines make work easier? Background Information. There are three ways simple machines make work easier: by increasing the distance through which force is applied, by changing the direction of applied force, or by multiplying force of speed of the energy applied. When can we say that work done is […]