How can you reduce the intensity of sound? Levels of sound pressure and levels of sound intensity decrease equally with the distance from the sound source. Sound power or sound power level has nothing (!) to do with the distance from the sound source. What is the best frequency for humans? 75M Hz Are 60 […]
Why does a fan appear to spin backwards?
Why does a fan appear to spin backwards? The backward motion illusion occurs when the speed of rotation is such that–in the interval between each frame–a new blade moves nearly into the position occupied by a blade in the previous frame. If the timing is precise, it looks like the propeller did not turn at […]
Which is a dopant for a P-type semiconductor Brainly?
Which is a dopant for a P-type semiconductor Brainly? Gallium is the element that would be best suited as a dopant for p-type semi-conductor because it belongs to the third group on the periodic table. Which process is used to make a semiconductor into a transistor? planar process What is the use of transistor in […]
What are the three steps of cell signaling?
What are the three steps of cell signaling? Cell signaling can be divided into 3 stages. Reception: A cell detects a signaling molecule from the outside of the cell. Transduction: When the signaling molecule binds the receptor it changes the receptor protein in some way. Response: Finally, the signal triggers a specific cellular response. What […]
How do we use fossil fuels examples?
How do we use fossil fuels examples? Fossil fuel is drilled or mined today for use of energy resources. They are used to produce electricity, use as fuel for heating and transportation, and for many other uses in manufacturing and industry. How is fossil fuel extracted? There are two main methods for removing fossil fuels […]
What should you use if you accidentally touch the lenses on a microscope?
Can you get struck by lightning in the bathtub?
Can you get struck by lightning in the bathtub? Most people hit by lightning are outside. But, according to Snopes.com, lightning striking into the ground near homes has sent electricity up pipes and into sinks and bathtubs. However, incidents like this are uncommon because rarely is someone doing dishes or showering at the “precise moment […]
What are three scientific theories?
What are three scientific theories? Examples of scientific theories in different areas of science include: Astronomy: Big Bang Theory. Biology: Cell Theory; Theory of Evolution; Germ Theory of Disease. Chemistry: Atomic Theory; Kinetic Theory of Gases. Physics: General Relativity; Special Relativity; Theory of Relativity; Quantum Field Theory. What makes a bad scientific theory? Bad scientific […]
Why is the ground under my house wet?
Why is the ground under my house wet? Most times, water in the crawl space gets there one of three ways: a plumbing leak, water seepage from the surrounding soil (usually after heavy rain), or condensation. Humidity condenses on cold surfaces, like ducts, and drips onto the crawl space floor. How long does it take […]
What happens if you add a second pulley to a pulley system?
What happens if you add a second pulley to a pulley system? The powerful mechanical advantage of a pulley is in using many pulleys at once. Combining multiple pulleys decreases the amount of force necessary to move an object by increasing the amount of rope used to raise the object. How does a single movable […]