How big should a mirror be above a fireplace? Ideally the maximum height of the mirror frame should be at least 4″-5″ below a cornice, or 2″ below a picture rail. 3. The mirror frame should not extend beyond the end of the mantelpiece shelf. Where do you hang a mirror over a fireplace? Mirror […]
How do you find the distance and midpoint?
How many years will it take to clean the ocean?
How many years will it take to clean the ocean? How long will it take to clean up a gyre? A complete cleanup of a gyre is unrealistic, but calculations show we can clean up 50% of the Great Pacific Garbage Patch five years from full-scale deployment of our systems. Why are ocean gyres important? […]
Are NPN and PNP transistors interchangeable?
Are NPN and PNP transistors interchangeable? Answer: NPN and PNP transistors are interchangeable if you remember one simple rule: A bipolar transistor is essentially two back-to-back diodes with the base being the common connection. The collector (C), on the other hand, goes to +V — in effect, reverse biasing that diode. Can you convert PNP […]
What type of electromagnetic waves is used in radar?
What type of electromagnetic waves is used in radar? Radar uses radio waves which are electromagnetic waves and travel at a speed of 300,000,000 m/s. What are the 2 types of radar? Radars can be classified into the following two types based on the type of signal with which Radar can be operated. Pulse Radar. […]
What is the format of references?
What is the format of references? “References” is centered 1-inch down. It’s not capitalized, bold, or italicized. The reference citations are double spaced with no additional lines between them. References that go past the first line have a hanging indent. How do you write a reference example? How to write a character reference letter Start […]
What devices are used for measuring atmospheric pressure and wind speed?
What devices are used for measuring atmospheric pressure and wind speed? A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. A simple barometer consists of a long glass tube (closed at one end, open at the other) filled with mercury and turned upside down into a container of mercury. What instruments […]
Is voltage is directly proportional to resistance?
Is voltage is directly proportional to resistance? Ohm’s law Equation tells us that the current in a circuit can be determined if the values of resistance and voltages are known. Therefore, voltage is not proportional to resistance. Why ammeter has low resistance and voltmeter has high resistance? It must be placed in series with the […]
What happens when there is an open circuit?
What happens when there is an open circuit? An open circuit implies that the two terminals are points are externally disconnected, which is equivalent to a resistance R=∞ . This means that zero current can flow between the two terminals, regardless of any voltage difference. How do you know if you have an electrical problem? […]
Why is zener diode reverse biased?
Why is zener diode reverse biased? When connected in parallel with a variable voltage source so that it is reverse biased, a Zener diode conducts when the voltage reaches the diode’s reverse breakdown voltage. From that point on, the low impedance of the diode keeps the voltage across the diode at that value. What do […]