What is balanced force give an example? When two forces are the same strength but act in opposite direction, they are called balanced forces. Again, tug-of-war is a perfect example. If the people on each side of the rope are pulling with the same strength, but in the opposite direction, the forces are balanced. The […]
Is the Congo river dangerous?
Is the Congo river dangerous? In a country with few paved roads, boarding an overcrowded boat on a treacherous river is a way of life. This weekend, journeys on the dangerous waterways stole the lives of up to 270 people. What country is called the heart of Africa? Malawi What language is spoken in Malawi […]
What frequency is gamma rays?
What frequency is gamma rays? Gamma rays have frequencies greater than about 10^19 cycles per second, or hertz (Hz), and wavelengths of less than 100 picometers (pm), or 4 x 10^9 inches. (A picometer is one-trillionth of a meter.) Is there a shorter wavelength than gamma rays? Electromagnetic energy travels as waves that vary in […]
Is too much walking bad for joints?
Is too much walking bad for joints? A new study shows that middle-aged men and women who engage in high levels of physical activity — at home and at work as well as at the gym — may be unwittingly damaging their knees and increasing their risk for osteoarthritis. The study involved men and women […]
Why is the gravitational constant important?
Why is the gravitational constant important? The constant, G, determines the strength of Newton’s inverse square law in a particular system of physical units and is, not surprisingly, known as Newton’s constant of gravitation. It is considered to be a fundamental constant of nature. Gravity is also by far the weakest force. Who found the […]
Has anyone hit a homerun in every ballpark?
Has anyone hit a homerun in every ballpark? When this question was posed early in 2019, I had given the answer that Mark Reynolds and Curtis Granderson had homered in every MLB ballpark. While the Toddfather is only 32nd on the active career HR list, he has nonetheless managed to homer in every current ballpark […]
Is Drag air resistance?
Is Drag air resistance? In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. … How do you force drag? For larger objects (such […]
How do you heat up gold?
What are the different types of optical instruments?
What are the different types of optical instruments? An optical instrument (or “optic” for short) is a device that processes light waves (or photons), either to enhance an image for viewing or to analyze and determine their characteristic properties. Common examples include periscopes, microscopes, telescopes, and cameras. Is a mirror an optical device? A mirror […]
Is cl2 positive or negative?
Is cl2 positive or negative? Answer. is nothing but a Chlorine molecule made up of two Chlorine atoms with one negative charge on each. The resultant chlorine molecule or is neutral in charge as the two form covalent bonding. Thus they have no charge as either of the two atoms has not lost or gained […]