Category: Physics

How long does it take for iron to rust in the ocean? it will start almost immediately, and may progress at a rate of around 1/2mm per year. This rate will vary depending on the alloy and water conditions. Does rust continue when dry? Rust does not spread through contact like a biological infection. This […]

Which has higher heat capacity metal or water? We would say that water has a high heat capacity (the amount of heat required to raise the temperature of an object by 1°C.) Water is very resistant to changes in temperature, while metals in general are not. Does plastic or metal cool faster? Here, for instance, […]

What size pump do I need to lift water 20 feet? Example – Horsepower Required to Pump Water Power Required to Pump Water (hp) Volume Flow (gpm) Height (ft) 10 0.0126 0.0505 15 0.0189 0.0758 20 0.0253 0.101 What size of pump do I need to lift water 25 feet? 2½” – Jet pumps in […]

What does UVC do to humans? A: UVC radiation can cause severe burns of the skin and eye injuries (photokeratitis). Avoid direct skin exposure to UVC radiation and never look directly into a UVC light source, even briefly. Skin burns and eye injuries from UVC exposure usually resolve within a week with no known long-term […]

How much charge flows through a wire? A current of 1 ampere means that there is 1 coulomb of charge passing through a cross section of a wire every 1 second. How do you calculate how much charge a wire has? Electric current is measured in units of amperes; the symbol for the ampere is […]

How can you tell the difference between a star and a satellite? A satellite will move in a straight line and take several minutes to cross the sky. A meteor, or shooting star, will move in less than a fraction of a second across the sky. Observe the kind of light from the “star”. A […]

What food reduces white blood cells? To lower your high white blood cell count, you should include the following in your diet: Vitamin C. Eating Vitamin C will help regulate the levels of white blood cells in your body. Fruits like lemons, oranges, and lime are rich in vitamin C, and so are papayas, berries, […]

What is the character of the two brothers? The story centers around two brothers: Anpu (Anubis), who is married, and the younger Bata. The brothers work together, farming land and raising cattle. One day, Anpu’s wife attempts to seduce Bata. Why does the mountain represent the elder brother? For the elder brother the forest, the […]

Does ice float on water? What’s so special about ice that causes it to float? Believe it or not, ice is actually about 9% less dense than water. Since the water is heavier, it displaces the lighter ice, causing the ice to float to the top. Why does ice float biology? Solid water, or ice, […]

What are 4 elements of a positioning statement? The Positioning Statement definition is comprised of 4 parts; the target, the category, the differentiator, and the payoff. We’ll talk about these in summary below, but first, there is some work to be done. Before sitting down to write your PS, decisions must be made. You must […]