Category: Physics

What instrument can make any sound? What instrument can make any sound and be heard but not touched or seen? Your voice. What are examples of idiophones? Idiophones make their sound by hitting, rubbing or shaking. Drums are not idiophones. Neither are stringed instruments. Examples of idiophones include the triangle, wood block, maracas, bell, and […]

How can standing waves be prevented? The solution to stopping a standing wave is cutting the offending frequency of the related instrument….Standing waves can be caused when waves bounce between; Opposite walls. Four sides of the room. All six sides of the room (given most rooms have four walls, a floor, and a ceiling!) Why […]

Who is the tallest man on earth in 2020? Sultan Kösen Who is the shortest man alive? Chandra Bahadur Dangi Who is the tallest kid in the world? Brenden Adams Born September 20, 1995 Ellensburg, Washington, U.S. Known for Formerly the tallest teenager in the world Height 7 ft 8 in (2.34 m) How tall […]

What are 2 ways to keep a gas dissolved in a liquid? The solubility of a gas in a liquid will increase if: Lower the temperature of the solution , and therefore, lower the kinetic energy of the gaseous particles so they can escape the liquid phase less often. What is the general rule used […]

How can I generate electricity cheaply? The IRENA report found that solar and onshore wind are the cheapest energy sources. It states that in 2017 wind turbine prices had an average cost of $0.06 per kWh, and at times dropped to $0.04 per kWh. What is the cheapest power generation? solar power schemes Is using […]

Which part of Earth gets the most sunlight? the equator What part of Earth gets the least amount of sunlight? The places in the world with the fewest daylight hours Rjukan (Noruega) Imagine a little village located in a valley to the south of Norway, surrounded by mountains. Barrow (USA) We return to North America […]

How much does a hovercraft cost? Rescue hovercraft range from $28,000 to $79,000 and commercial hovercraft from $36,000 to $90,000. Trailers range from $3,000 to $12,600. (Prices in US Dollars.) HOW IS A HOVERCRAFT DIFFERENT FROM AN AIRBOAT? Why did they stop using hovercrafts? The Channel’s hovercraft service had its peak year in 198 when […]

What if there is 2 modes? Mode – The mode is the number that appears the most. If there are two numbers that appear most often (and the same number of times) then the data has two modes. This is called bimodal. If there are more than 2 then the data would be called multimodal. […]

Did cannonballs have explosives in them? A cannonball is a solid ball of metal. It did not contain any explosive material and its killing power came simply from a fact that it was a ball of metal travelling at a very high speed. How fast is a cannonball mph? 106 mph (171 km/h) average. Set […]

What will be the magnetic field outside and inside a long current carrying solenoid? Outside the solenoid the magnetic field will be weak and the field lines will curl up to form closed loops. Hence, the magnetic field inside a solenoid carrying current will be the same at all the points. What is the value […]