Category: Physics

Can you hear music underwater? Sound waves actually travel five times faster in water than in air. Underwater those sound waves don’t vibrate the ossicles bones in your inner ear. They go straight to the skull bones, vibrating that heavy bone you can touch just behind your ear. Because of that, you can hear higher […]

What volume is a standard mug? 350 ml What size is a cup of coffee? A “cup” of coffee in the US is usually 4 fluid ounces (118 mL), brewed using 5 fluid ounces (148 mL) of water. Coffee carafes used with drip coffee makers, e.g. Black and Decker models, have markings for both water […]

How many rear fog lights does a car have? Some cars are designed with one or two rear fog lights. However, only the light on the driver’s side is turned on to avoid confusion with brake lights. If road visibility is extremely poor and your car doesn’t have rear fog lights, a driver behind you […]

What is the pipe schedule? Pipe Schedule (SCH) is a standard that measures the nominal wall thickness of a pipe, given by the ANSI / ASME B36. The pipe schedule number is non-dimensional and depends on the nominal pipe size, internal pipe working pressure, and the material used for the pipe wall. How do you […]

What can forensics be used for? Forensic science is a critical element of the criminal justice system. Forensic scientists examine and analyze evidence from crime scenes and elsewhere to develop objective findings that can assist in the investigation and prosecution of perpetrators of crime or absolve an innocent person from suspicion. What are forensics techniques? […]

What are the new tracks for Nascar 2021? The 36-race NASCAR 2021 Cup Series schedule will feature three new tracks. The premier racing body has also confirmed a dirt-track race as part of its 2021 calendar. Circuit of the Americas, Road America, and Nashville Superspeedway are the three tracks added. What is the new racing […]

How many extrasolar planets are there? 4,341 exoplanets How do we see exoplanets? Exoplanets are very hard to see directly with telescopes. They are hidden by the bright glare of the stars they orbit. So, astronomers use other ways to detect and study these distant planets. They search for exoplanets by looking at the effects […]

What animal is the closest cousin to Dolphins? hippopotamus How do whales behave like humans? Both are quite affectionate in many ways too. Whales have been seen rubbing and caressing each other as a human couple would. In spite of all their similarities though, humans and whales do have some differences that create quite a […]

What is one environmental effect of diverting water from a river? What are two environmental problems associated with water diversion? Decreased water volume will increase salinity, harming the animal’s health. What is a benefit of diverting water for urban consumption? It’s necessary for health, such as maintain hygiene or cleaning supplies. What is the water […]

What part of the heart pumps blood to lungs? The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out […]