Category: Physics

Does a heavier person slide faster? The force due to gravity and frictional force are both proportional to the mass of the person so mass cancels out. Just because no one’s mentioned it yet, more mass would mean larger terminal velocity, so at peak speed heavier people will go down slides faster. Do heavier riders […]

What is an example of a closed system in thermodynamics? A closed system allows only energy transfer but no transfer of mass. Example: a cup of coffee with a lid on it, or a simple water bottle. Isolated systems allow neither mass nor energy to flow through their boundaries. Example: a thermos flask. Which of […]

How do deep sea producers differ from other producers? Deep-sea producers have adapted mechanisms to conduct photosynthesis with less visible light. Deep-sea producers have adapted to conduct respiration instead of photosynthesis due to lack of light. Is ocean bacteria a producer? Phytoplankton serve as the major primary producers in the marine ecosystem. These microscopic, single-celled […]

How many leap years do 300 years have? 72 leap years How do you find the number of leap years in 100 years? Given year is divided by 4, and the quotient gives the number of leap years. Here, 100%4 = 25. But, as 100 is not a leap year => 25 – 1= 24 […]

How do you check if multiple cells are blank? The ISBLANK function in Excel checks whether a cell is blank or not. Like other IS functions, it always returns a Boolean value as the result: TRUE if a cell is empty and FALSE if a cell is not empty. Do you need a comma in […]

How much is a lot of rain per year? Average Annual Precipitation by State State Inches Millimetres California 22.2 563 Colorado 15.9 405 Connecticut 50.3 1279 Delaware 45.7 1160 What is 1 inch of rain equal to in snow? thirteen inches What does 1 cm snow mean? In many snow events a ratio of 10 […]

Is a hypothesis an observation? Help students recognize that identifying a hypothesis in an article tells you something about how to think about that statement more critically. Because it isn’t an observation, the reader needs to investigate whether or not the hypothesis was supported by observations. What is the difference between a hypothesis and a […]

Do things float better in hot or cold water? Cooling a substance causes molecules to slow down and get slightly closer together, occupying a smaller volume that results in an increase in density. Hot water is less dense and will float on room-temperature water. Cold water is more dense and will sink in room-temperature water. […]

How much does it cost to cut 5 acres of grass? Expect to pay about $175 per acre of grass to be cut. Some experts charge less for larger properties….Mowing Prices by Acreage. Property Size in Acres Cost Range 5 $450-$650 10 $500-$750 How much does it cost to cut 4 acres of grass? The […]

Which of the following is the advantage of alkaline battery? Advantages. One of the advantages of alkaline batteries over other primary batteries and rechargeable batteries is that it has higher energy density. For example, this battery has double the energy density of a Leclanché cell and zinc-carbon batteries. Is alkaline battery acid dangerous? Alkaline batteries […]