Is the ruler drop test valid? The ruler-drop test has acceptable test-retest reliability that compares favorably with computerized measures of reaction time. Which finger has the fastest reaction time? The fingers on the outside — i.e. the thumb and little finger — therefore react faster than the middle finger, which is exposed to the “cross […]
Is acceleration and velocity the same?
Is acceleration and velocity the same? Velocity is the rate of change of position with respect to time, whereas acceleration is the rate of change of velocity. Both are vector quantities (and so also have a specified direction), but the units of velocity are meters per second while the units of acceleration are meters per […]
Is negative free cash flow a bad sign?
Is negative free cash flow a bad sign? Although companies and investors usually want to see positive cash flow from all of a company’s operations, having negative cash flow from investing activities is not always bad. Can you have negative cash flow and positive profit? Cash flow is the net amount of cash and cash-equivalents […]
Why do roller coasters feel faster than cars?
Why does losing gaining an electron cause the other element to gain lose atoms?
Why does losing gaining an electron cause the other element to gain lose atoms? Answer: A positive ion is formed where an atom has more protons than electrons. Atoms and chemical species lose or gain electrons when they react in order to gain stability. Thus, typically, metals (with nearly empty outer shells) lose electrons to […]
Why do magnets align in the north south direction?
Why do magnets align in the north south direction? Magnetism | Short/Long Answer Questions Solution: A freely suspended magnet always rests in the north-south direction because the magnetic south pole of the earth lies in the geographic north direction and the magnetic north pole of the earth lies in the geographical south direction. What will […]
What are the similarities and differences between kinetic and potential energy?
What are the similarities and differences between kinetic and potential energy? KE is the energy possessed by an object by virtue of it being in motion. PE is the energy possessed by an object by virtue of its position. It can be transferred from one object to another and this happens during collisions. Potential Energy, […]
What are the major types of work?
What are the major types of work? First, let’s take a look at the five kinds of work we do every day: Reactionary Work. Planning Work. Procedural Work. Insecurity Work. Problem-Solving Work. How many types of work do we have? Four Types What is considered an IT project? An information technology project is a temporary […]
Is sodium and magnesium an ionic compound?
Is sodium and magnesium an ionic compound? There is a strong electrostatic force of attraction between these oppositely charged ions – this is called an ionic bond. The slideshow shows ionic bonds being formed in sodium chloride, magnesium oxide and calcium chloride. How do you combine ionic charges? To find the formula of an ionic […]
What is the actual weight of molecule of water?
What is the actual weight of molecule of water? Therefore, 18g of mass of water is occupied by 6.022×1023 number of molecules. Therefore, we can calculate the mass of one molecule of water by dividing the mass of one mole of water and Avogadro number. The actual weight of a molecule of water is calculated […]