How much energy is in a log? A standard cord of well-seasoned hardwood (stack of wood 4’X 4’X 8′ or 128 cubic feet) contains the heat equivalent of about 20 million BTU’s. By way of comparison this is more or less equivalent to the heat value in 145 gallons of #2 fuel oil or 215 […]
What is the best shutter speed for portraits?
What is the best shutter speed for portraits? around 1/200 of a second What is a good shutter speed for handheld? Traditionally, the reciprocal of the effective focal length is a good guide to a safe handheld shutter speed. With a 100mm lens on a full-frame camera, that means using a shutter speed that’s at […]
Can you use water for eye drops?
Can you use water for eye drops? In a pinch, use distilled water, saline drops or cooled boiled tap water. Sleeping in contacts. This can increase your risk of infection that can lead to permanent eye damage and vision loss. What is the best eye wash solution? Bausch + Lomb Advanced Eye Relief eye wash […]
What happens if trachea is not moist?
What happens if trachea is not moist? If the respiratory tract is not wet, the dirt particles in the inhaled water in the nasal cavities will not be removed from the atmosphere and will reach the lungs and cause lung issues. The temperature of the inhaled air for the soft passage in the respiratory tract […]
What is alcohol mixture?
What is alcohol mixture? Drinking alcohol (ethanol) is a not a mixture, but a pure substance that happens to be a liquid at room temperature and typical atmospheric pressure. It’s about 43% ethanol, the rest is mostly water (which makes it a mixture). Which types of substance is glucose? Glucose, also called dextrose, one of […]
Why glass is called supercooled liquid?
Why glass is called supercooled liquid? Glass is called supercooled liquid because glass is an amorphous solid. Amorphous solids have the tendency to flow but, slowly. I doest not form a crystalline solid structure as particles in solids do not move but here it moves. Hence it is called a supercooled liquid. Is ice a […]
What does resistance to blood flow mean?
What does resistance to blood flow mean? Blood flow is the movement of blood through a vessel, tissue, or organ. The slowing or blocking of blood flow is called resistance. In the arterial system, as resistance increases, blood pressure increases and flow decreases. What does vascular resistance depend on? Vascular resistance depends on blood flow […]
Why did so many colonies fail?
Why did so many colonies fail? Frigid winters and scurvy claimed several settlements; starving settlers abandoned others. Indians laid siege to settlements or attacked them outright. Rebellion by brutalized soldiers or starved African slaves ended two colonies. What was one of the first major problems in Jamestown? One of the first major problems in Jamestown […]
What is the smallest unit of matter?
What is the smallest unit of matter? Atom What are the basics of matter? Matter: Matter is any substance which has mass and occupies space. All physical objects are composed of matter, in the form of atoms and molecules, which are in turn composed of protons, neutrons, and electrons. What are the components of matter? […]
What is the sum of three angles of a triangle?
What is the sum of three angles of a triangle? The sum of the three angles of any triangle is equal to 180 degrees. Can a spherical triangle have 3 right angles? F. Smarandache (1969) has established geometrical spaces such that some (well-known) “axiom” is false in at least two different ways, or is false […]