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 […]

What are 3 control variables? An experiment usually has three kinds of variables: independent, dependent, and controlled. The independent variable is the one that is changed by the scientist. What is an example of the control group? A simple example of a control group can be seen in an experiment in which the researcher tests […]

What happens if a hot air balloon gets a hole? What happens if a hot air balloon gets a hole? The balloon would fall to the ground. A hot air balloon stays aloft because of buoyancy; warm air is less dense than the air around it, so it rises, pushing the balloon up. How dangerous […]

Do egg cartons reduce sound? The various textural ripples and waves of egg carton-shaped materials do not absorb sound waves in their entirety. Instead, they break these sound waves up into multiple frequencies and echo them in various directions, which radically reduces the level of noise production and echo in your room. How can you […]

How many times have gravitational waves been detected? It is the collaboration’s second catalogue of events, following one published in December 2018 describing their first 11 detections. In all, the observation network has now observed 50 gravitational-wave events (see ‘Cosmic clashes’). How will gravitational waves reveal a hidden universe? With gravitational waves we can study […]