Category: Physics

What is agriculture forestry and fishing? The agriculture, forestry and fishing industry has the role of managing our natural resources. The industry includes business activities engaged in growing crops, raising animals, growing and harvesting timber, and harvesting fish and other animals from farms or their natural habitats. What is agricultural forestry? Types of Agro forestry […]

How do mass and distance affect the force of gravity between two objects? If the mass of both of the objects is doubled, then the force of gravity between them is quadrupled; and so on. Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation […]

Why does the border between light and dark on the moon change location? The border between light and dark on the Moon changes its location because the sun only illuminates half the Moon leaving the other half dark making a border between light and dark (terminator). As the Moon orbits around the Earth, we are […]

How did sailors measure knots? Currents Tutorial The term knot dates from the 17th Century, when sailors measured the speed of their ship by the use of a device called a “common log.” This device was a coil of rope with uniformly spaced knots tied in it, attached to a piece of wood shaped like […]

When wood burns what products are produced there are 4 )? As wood burns, molecules of cellulose are broken down and combine with oxygen to form carbon dioxide and water vapor, and energy is released. What happens to chemical bonds during chemical reactions? Which gas is produced when wood burns? During the production process biomass […]

Is a joule equal to one newton meter? One joule equals the work done (or energy expended) by a force of one newton (N) acting over a distance of one meter (m). One newton equals a force that produces an acceleration of one meter per second (s) per second on a one kilogram (kg) mass. […]

How do you fix a blouse that is too big? To do this, try on the sleeveless blouse (or dress) and pinch in the equal excess you’d like to remove on each side until the blouse/dress feels comfortable. Insert a pin on both sides, temporarily taking in the necessary excess. Move around a bit to […]

When UV light of wavelength falls on a metal surface? When UV light of wavelength 285 nm falls on a metal surface, themaximum kinetic energy of emitted electrons is 1.40 eV. When ultraviolet light with a wavelength of 400 nm falls on a certain metal surface the maximum kinetic energy of the emitted photoelectrons is […]

Why is Sumif not working? You may get your SUMIF formula working. If SUMIF is returning #N/A error or any other error, evaluate the formula. If you are writing the correct formula and when you update sheet, the SUMIF function doesn’t return updated value. It is possible that you have set formula calculation to manual. […]

What is the bubble on top of water called? A meniscus is a curve in the surface of a molecular substance (water, of course) when it touches another material. With water, you can think of it as when water sticks to the inside of a glass. How do you find a curved surface area? To […]