Category: Physics

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. […]

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 are the 3 equations for power? Ohm’s law equation (formula): V = I × R and the power law equation (formula): P = I × V. P = power, I or J = Latin: influare, international ampere, or intensity and R = resistance. V = voltage, electric potential difference Δ V or E = […]

Who is the most powerful nuclear country? Countries with the most nuclear weapons | US is not number 1, China adds 30 warheads within a year No 3 | Country: China | Number of nuclear weapons: 320 (Image: Reuters) No 2 | Country: US | Number of nuclear weapons: 5,800 (Image: Reuters) No 1 | […]

Does reactivity increase left to right? Chemical reactivity of the elements – definition Period – reactivity decreases as you go from left to right across a period. The farther to the left and down the periodic chart you go, the easier it is for electrons to be given or taken away, resulting in higher reactivity. […]

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. […]

What function does a nucleus have? The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Is the nucleolus inside the nucleus? The nucleolus is a region found within the cell nucleus that is concerned with producing and assembling the cell’s […]

When someone says you have a lot of potential? Don’t you just love it when someone says, “You have potential.” What does that really mean? It means you have the ability to pursue and conquer anything you put your mind to. It means you have gifts and talents dormant waiting to be manifested. What is […]

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 […]

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 […]