Category: Physics

How far did Amelia Earhart fly? 2,000 miles Who piloted the first non-stop flight across the Atlantic? The First Nonstop Flight Across the Atlantic Lasted 16 Harrowing Hours. John Alcock and Arthur Whitten Brown flew across the Atlantic with the help of a sextant, whisky and coffee in 1919—eight years before Charles Lindbergh’s flight. Who […]

Where is most energy found in a food web? The vast majority of energy in food webs originates from the sun. Energy is not recycled in ecosystems and each ecosystem requires a continuous input of energy to sustain it. There is some energy transformed at each level of the food chain or food web in […]

How many coordinate systems are there? In this article we mainly discuss two types of coordinate systems. What is the difference between phi and theta? Theta is the same as the angle used in polar coordinates. Phi is the angle between the z-axis and the line connecting the origin and the point. How do you […]

Is K or Br bigger? Since potassium is located at the start of period 3, and bromine at the end of the same period, potassium will have a larger atomic radius than bromine, and thus the largest atomic radius of the four given atoms. Does S or O have a larger atomic radius? Consequently for […]

What would you use to measure 1 mL of DI water? If it does not have to be exact, 1 drop from a eye drop or similar type device will be about 1ml. You can probably even use something like the tip of a pencil to form a droplet and that will be about 1ml. […]

How many kilowatts does a TV use? How Much Electricity Do My Home Appliances Use? Appliance Wattage per hour of use Annual cost (at average use) Television (>40”, HD TV) 234 $41.00 Refrigerator 225 $78.84 Washing Machine 255 $9.55 Dryer 2790 $104.46 Is it expensive to have a fan on all night? According to Energy […]

What does 9 10 look like as a decimal? 9/10 as a decimal is 0.9. What is 9 over 10 as a decimal? Fraction to decimal conversion table Fraction Decimal 6/10 0.6 7/10 0.7 8/10 0.8 9/10 0.9 What is 3 and 9/10 as a decimal? 3 9/10 is equal to 3.9 in decimal form. […]

Why do we need to follow Seat Belts Use Act? Seat belts reduce serious crash-related injuries and deaths by about half, according to the National Highway Traffic Safety Administration. The simple act of wearing a seat belt is the single most effective way to reduce the risk of fatality in a crash. Why are seat […]

Can you see North Star from equator? As you travel northward, Polaris climbs higher in the sky. If you go as far north as the North Pole, you’ll see Polaris directly overhead. If you get as far as the equator, Polaris sinks to the horizon. South of the equator, Polaris drops out of the sky. […]

What were two major shortcomings of Mendeleev periodic table? State two limitations of Mendeleev Periodic Table Elements with large differences in properties were included in the same group. No proper position could be given to the element hydrogen. The increasing order of atomic mass was not strictly followed throughout. How were the drawbacks removed in […]