Category: Physics

What does light do in the photoelectric effect? In the photoelectric effect, light incident on the surface of a metal causes electrons to be ejected. The number of emitted electrons and their kinetic energy can be measured as a function of the intensity and frequency of the light. Which experiment proved the particle nature of […]

What is the symbol of magnetic field? Index to magnetic terms & units in the SI Quantity name Quantity symbol Quantity symbol magnetic field strength H Φ magnetic flux density B χρ magnetic moment m J magnetic susceptibility χ M What are the two magnetic forces? The most elementary force between magnets is the magnetic […]

Is wanted formal know? People sometimes ask a question, then say, “Just wanted to ask” to indicate that they were only asking out of curiosity. At other times someone might preface a question with “I just wanted to ask, but…”, as a way of introducing the question. “May I know” is not idiomatic. It is […]

Which statement best describes the relationship of resistance and current? resistance is directly proportional to current because r = vi. Which statement best describes the relationship between resistance and current? Answer Expert Verified. Answer: Option (b) is the correct answer. Explanation: According to ohm’s law, the relationship between voltage, resistance, and current is that current […]

Who owns water in USA? Water corporations have identified United States public systems as potentially profitable. These are United Water, a subsidiary of the French company Suez Environment, American Water, and Siemens from Germany which acquired US Filter Corps from French Veolia Environment and runs it under the Siemens name. What does China own in […]

How many total atoms are in a glucose molecule? 1 molecule of glucose contains 6 atoms of C, 12 atoms of H, and 6 atoms of O • 1 mole of glucose contains 6 moles of C atoms, 12 moles of H atoms, and 6 moles of O atoms. 10 moles of glucose contains 60 […]

Does increasing volume increase rate of reaction? A larger surface area per volume ratio increases the areas of contact between reactant particles. This increases the chances of successful collisions. Thus the rate of reaction is increased. Why does volume not affect rate of reaction? As the gas sample volume increases (e.g. as we add more […]

What is a good attack angle? While there are exceptions, this is my basic formula for players in college or pro ball: If the hitter’s peak exit velocity is under 105 mph, their attack angle should be between 5 and 15 degrees. If their peak exit velocity is above 105 mph, it should be between […]

What are the advantages of observation in research? The biggest advantage of observational research has already been noted: it enables businesses to observe potential customers in a natural setting, which can reveal penetrating insights unavailable through other methods such as focus groups and surveys. What are the advantages and disadvantages of a survey? Advantages of […]

What are the 3 laws of flight? The Third Law states that “For every action, there is an equal and opposite reaction.” It was developed by Sir Issac Newton in the 17th century. The four forces of flight are always acting on an aircraft: thrust (forward), drag (rearward), lift (up), and weight (down). How is […]