Category: Physics

Does milk put out fire? Milk and Grease Fires Some experts say milk also can cause a fireball or explosion when put on a grease fire. The only way milk can put out a grease fire is if such a vast quantity of milk is used that it completely submerges the fire, causing the fire […]

How do you describe a line of reflection? A reflection is a transformation representing a flip of a figure. When reflecting a figure in a line or in a point, the image is congruent to the preimage. A reflection maps every point of a figure to an image across a fixed line. The fixed line […]

How many heartbeats are there in a lifetime? As we’ve seen, humans have on average a heart rate of around 60 to 70 beats per minute, give or take. We live roughly 70 or so years, giving us just over 2 billion beats all up. Chickens have a faster heart rate of about 275 beats […]

What is Relay and its application? Relays are used for isolating a low voltage circuit from high voltage circuit. They are used for controlling multiple circuits. They are also used as automatic change over. Microprocessors use relays to control a heavy electrical load. Overload relays are used for protection of motor from overload & electrical […]

How do you calculate the de Broglie wavelength? Apply the de Broglie wave equation λ=hmv λ = h m v to solve for the wavelength of the moving electron. Step 3: Think about your result. This very small wavelength is about 1/20th of the diameter of a hydrogen atom. Looking at the equation, as the […]

What are the units of contraction in a muscle called? The unit of contraction in a muscle cell is called Sarcomere. Is a fascicle a motor unit? Motor Unit Anatomy A skeletal muscle fascicle consists of 20 to 60 fibers surrounded by a connective tissue sheath. A single muscle fiber is innervated by only one […]

What is the difference between skill and skill related physical fitness? Health-related fitness activities can be integrated into everyday activities that are often characterized as lifetime activities. In contrast, skill-related physical fitness includes health-related components, but it also covers components related to physical performance. How do you develop skill related physical fitness? Traditionally, skill related […]

Which layer of the endometrium is the functional layer? The uterus is made up of an external layer of smooth muscle called the myometrium, and an internal layer called the endometrium. The endometrium has three layers: stratum compactum, stratum spongiosum (which make up the stratum functionalis) and stratum basalis. Which of the following is a […]

Which two points on the wave are out of phase? The wavelength of a wave is the distance between any two adjacent points that are in phase. Points that are not in phase, those that are not separated by a complete number of wavelengths, are called out of phase. Examples of points like these would […]

How many hours should AC run per day? A properly sized system should run non stop for 24 hours on the hottest day of the year. Well it should run the entire time that the peak load is occuring . This may be for 8 hours or so but will not be for 24 hours. […]