Is hypothesis always acceptable? Upon analysis of the results, a hypothesis can be rejected or modified, but it can never be proven to be correct 100 percent of the time. For example, relativity has been tested many times, so it is generally accepted as true, but there could be an instance, which has not been […]
How many free electrons does copper have?
How many free electrons does copper have? Copper has one free electron per atom, so n is equal to 8.5×1028 electrons per cubic metre. How quickly do electrons flow down a copper wire? In the case of a 12 gauge copper wire carrying 10 amperes of current (typical of home wiring), the individual electrons only […]
How will the sound of the car change as the car passes the observer?
How will the sound of the car change as the car passes the observer? When the car passes the observer and is moving away, then the car is moving away from the sound waves it sends out, so the wavelength is longer. The denominator here is larger, so this longer wavelength means a smaller frequency. […]
Why rest and recovery is more important than ever right now?
Why rest and recovery is more important than ever right now? Simply put, prioritizing rest and recovery helps us show up at our best, in every circumstance. It gives us the strength to fight against unequal treatment, to care for ourselves and others, and to weather the pandemic and the changes to everyday life that […]
What made Constantinople so difficult to conquer?
What made Constantinople so difficult to conquer? Constantinople was so difficult to conquer due to two main factors. Their double walls and Greek fire. The double walls were so powerful and massive that they could store massive amounts of grain and could withstand years of siege if they had too. Greek fire is the ancient […]
What is a principle of moment?
What is a principle of moment? The Principle of Moments states that when a body is balanced, the total clockwise moment about a point equals the total anticlockwise moment about the same point. How do you find SFD and BMD? Shear Force & Bending Moment Diagram of Simply Supported Beam Draw shear force and bending […]
What element in the second period has the largest?
What element in the second period has the largest? Lithium Which group has the highest electronegativity? fluorine What 3 elements have the highest electronegativity? Thus, fluorine is the most electronegative element, while francium is one of the least electronegative. (Helium, neon, and argon are not listed in the Pauling electronegativity scale, although in the Allred-Rochow […]
Why do we not use geothermal energy?
Why do we not use geothermal energy? One major concern around geothermal energy, as articulated by GreenMatch, is in regards to its extraction — often, the extraction of geothermal energy “leads to a release of greenhouse gases like hydrogen sulfide, carbon dioxide, methane and ammonia.” While this shouldn’t be ignored, it is worth noting that […]
Do we follow conventional current?
Do we follow conventional current? Conventional current is not a “kind” of current Conventional current is not a new or different kind of current. It is just a way to indicate current direction. In wires the current is always carried by electrons. Even with wires we still use conventional current direction to indicate the flow […]
What are three examples of constructive forces?
What are three examples of constructive forces? The processes for building new land are called constructive forces. Three of the main constructive forces are crustal deformation, volcanic eruptions, and deposition of sediment. How can we prevent soil pollution? Soil pollution can be controlled by the following measures: By reducing the use of plastics, we can […]