Category: Physics

What is the difference between an air conditioner and a heat exchanger? With air conditioning, there is no concern about hot spots because cooling occurs at well below ambient temperatures. Heat exchangers effectively prevent hot spots even though the cooling is slightly above the ambient temperatures. What heat transfer mediums are utilized in a residential […]

What is the function of ribosome in protein synthesis? The ribosome is universally responsible for synthesizing proteins by translating the genetic code transcribed in mRNA into an amino acid sequence. Ribosomes use cellular accessory proteins, soluble transfer RNAs, and metabolic energy to accomplish the initiation, elongation, and termination of peptide synthesis. Is the translation between […]

What is an ideal weight? Body mass index (BMI) is a common tool for deciding whether a person has an appropriate body weight. It measures a person’s weight in relation to their height. According to the National Institutes of Health (NIH) : A BMI of less than 18.5 means that a person is underweight. A […]

Is it cruel not to walk your dog? Walking your dog is essential for their health, but not doing it doesn’t make you cruel. You might never do dog walks but instead, spend time together and perform other exercises. Is a 20 minute walk enough for a dog? They have moderate exercise needs with a […]

How far should a senior golfer hit a 7-iron? 133.48 yards How far should you hit a 7-iron? 140 yards How far does Tiger Woods hit a 7 iron? Club Averages According to Golf Digest, Tiger hits the driver an average of 285 yards with carry. His long irons (2- to 4-iron) range from 250 […]

Why do a chicken embryo and a cow embryo look very? Why do a chicken embryo and a cow embryo look very similar even though the adults do not? The embryos mutate in utero to form different structures. The genetic makeup of the two species is similar. What evidence of evolution do we use to […]

Can I lift a 100 pound box? 100 pounds on a barbell is one thing, a box is entirely different. There is no way to safely lift a heavy box by yourself. Can a girl lift 100 pounds? A woman’s experience with lifting weights also influences how much average weight she can lift. According to […]

What four factors affect the magnitude of the induced emf in a coil? What four factors affect the induced emf? The induced e.m.f. is proportional to the number of turns in a coil. The speed at which the conductor moves through the magnetic field. The length of the conductor. The rate at which the conductor […]

Is it OK to drink glucose daily? Since glucose is used when needed, it does not have a daily dosing schedule. Call your doctor if your symptoms do not improve after using glucose. Can I drink glucose in empty stomach? This screening test involves drinking a sugary liquid, followed by a blood test an hour […]

What is meant by a free electron? 1 : an electron within a conducting substance (as a metal) but not permanently attached to any atom. 2 : an electron moving in a vacuum. Who proposed free electron model? Hendrik A. What are the types of free electron theory? Classical free electron theory of metals (Drude […]