Category: Physics

Is there a three sided die? There are already some three-sided dice on the market. Others are just six-sided dice with the numbers 1, 2, and 3 simply appearing twice. Shapeways user Nvenom8 has come up with a truly gorgeous D3, made possible by 3D printing. What is the most sided die? All dice are […]

What is the main idea in this paragraph? The main idea of a paragraph is the author’s message about the topic. It is often expressed directly or it can be implied. Which sentence is the topic sentence in the paragraph? The topic sentence is usually the first sentence of the paragraph because it gives an […]

Can a moving police car clock your speed? The word “radar” is an acronym for “Radio Detection and Ranging.” In simple terms, radar uses radio waves reflected off a moving object to determine its speed. With police radar, that moving object is your car. To clock your speed with radar, this means you must be […]

Can you fix a garden hose with duct tape? Duct Tape. Duct tape might seem capable of fixing anything, and it’s tempting to try to use it to fix a leaky garden hose. Duct tape isn’t designed for watertight repairs, however, and even if it manages to stop the leak in the short term, the […]

How do you keep fresh bread from getting moldy? Yep — your fridge. By keeping the bread in a cool and dark place, it will last longer and stay fresh. Heat, humidity and light are all bad for bread but great for fungi or mold, so consider your fridge your best bet to keep your […]

Where is the center of the Earth location? In 2016, Google Maps marked Isenberg’s result of 40°52′N 34°34′ECoordinates: 40°52′N 34°34′E as the geographical center of Earth. Is Mecca the Centre of the earth? Starting from the earth shapes are flat globe and elliptical, besides that the center of the earth in the North Pole, Mecca, […]

How can a simple machine lift a heavy load with small effort? Such a pulley makes our work easier by simply changing the direction of the force, i.e. a load is lifted up using a downward effort. It is easier to lift a load up by pulling it down rather than by pulling it up […]

How does wheel size affect your robot? Choose smaller sized wheel for flat terrain, larger wheel for more “off-road” (or large obstacles) Proportional to the size of the robot (choosing a wheel proportional to the size of the robot will usually mean the motor you will need is also proportional, and the robot has a […]

Is there any symptoms when sperm meets egg? Pregnancy begins when a sperm fertilizes an egg. This usually occurs in the 2 weeks following the first day of the most recent menstrual period. In the first few weeks of pregnancy, a woman may have no symptoms. Some can sense that they are pregnant, but most […]

How many days before and after period is safe? You’re most fertile at the time of ovulation (when an egg is released from your ovaries), which usually occurs 12 to 14 days before your next period starts. This is the time of the month when you’re most likely to get pregnant. It’s unlikely that you’ll […]