Category: Physics

What food scraps are good for plants? 4 Kitchen Scraps to Use in the Garden—Even if You Don’t Compost Eggshells. Coffee grounds. Banana peels. Orange peels. What fertilizer should I use for onions? nitrogen What fertilizer is best for carrots? Fertilizing Carrots Carrots should be fertilized when the tops have reached 3 inches tall. A […]

What would happen if you change the frequency of a light wave? Since light travels at the speed of light (wow), if you increase the frequency (number of waves per time frame) then you have to decrease the length of those waves in order to maintain the speed. Can frequency be changed? Of course, the […]

What are the 4 state symbols used in equations? Using state symbols in chemical equations State symbol Meaning (s) solid (l) liquid (g) gas (aq) aqueous (dissolved in water) What does P stand for in chemistry equations? the mass of a substance m, the number of moles of the substance n, partial pressure of a […]

Does solar panel work at night? If we talk about a limitation of these solar panels, you will get that Mono Crystalline Solar Panels work only in day time. People want to use solar panels at night, but the current solar panel does not work at night. Can I connect my solar panel directly to […]

How long will a 12 volt battery run LED lights? Say, 100 AH X 12V/ 100 Watts = 12 hrs (with 40% loss at the max = 12 x 40 /100 = 4.8 hrs) For sure, the backup will lasts up to 4.8 hrs. What voltage do LED lights run on? 3.3 volts How many […]

Which type of spectrum is Rainbow? visible light spectrum Is Rainbow an impure spectrum? Answer. The main difference though is that a prism has flat surfaces, leading to apure spectrum, while a raindrop has a round surface, leading to an impure spectrum. As this comparison makes obvious, a rainbow is not a pure spectrum. What […]

Will spilled fuel oil evaporate? Diesel fuel is most often a light, refined petroleum product. Small diesel spills will usually evaporate and disperse within a day or less. At what temperature does oil evaporate? about 300 C How long does oil take to evaporate? Volatile oils will evaporate in a few days or weeks, “fixed” […]

Do mountain lions have a predator? What are some predators of Mountain Lions? Predators of Mountain Lions include humans and grizzly bears. Do wolves eat mountain lions? Wolves are coursing, social predators that operate in packs to select disadvantaged prey in open areas where they can test their prey’s condition. This suggests that where wolves […]

What is the formula to calculate speed? The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time. In this example, distance is in metres (m) and time is in seconds (s), so the units will be […]

Is stretched bow has potential energy? An arrow held in a stretched bow also contains this stored energy. Specifically, the bow has elastic potential energy. The ball’s potential energy decreases and its kinetic energy increases. When the ball returns to its original height, its kinetic energy will be the same as when it started upward. […]