Category: Physics

What food nutrient is best for exercise? Minimally processed foods are the best for sports and weight lifting nutrition. Lean protein, complex carbs and fiber are your best friends, especially if you’re trying to lose weight. Your body needs lean protein such as turkey, nonfat Greek yogurt, fish and egg whites to build muscle and […]

Is Hekla a shield volcano? An active volcano for centuries, the mountain Hekla is one of the most famous in the world. Hekla is a stratovolcano, located near the southern end of the eastern rift zone in Iceland. The whole mountain ridge of Hekla is about 40 km long. The fissure, Heklugjá, which splits the […]

When should I watch the Perseid meteor shower? Perseid meteors have been streaking across our skies since around July 17. We’ll see Perseids for 10 days or so after the peak mornings on August 11, 12 and 13, though at considerably reduced numbers. Yet, each day as the moon wanes in the morning sky, less […]

What is another name for the worm and nut steering box? Recirculating ball, also known as recirculating ball and nut or worm and sector, is a steering mechanism commonly found in older automobiles, off-road vehicles, and some trucks. Why does a recirculating ball and nut steering box have two different colored balls in the ball […]

How do you fight a polar bear? If you encounter a polar bear, keep these tips in mind: Good luck. Polar bears are the biggest bears on Earth, and they’re much harder to scare than brown or black bears. Don’t act like prey. Do act like a threat. Use bear spray. Don’t give up. How […]

Why is my ice cream so hard? If the ice cream is not churned fast enough, larger ice crystals can develop, causing the ice cream to become too hard when frozen. The faster it is churned the more air that is whipped into it, which will help it from freezing as hard. Fat does not […]

What are long waves? Long waves, also called infragravity waves, have a wave period of 30 seconds to several minutes. Astronomical tides represent one important example of long waves. Long waves can occur in shallow water, such as the Chesapeake Bay. But long waves are not limited to what is normally considered shallow water. What […]

Why do electrons do not fall in nucleus? Quantum mechanics states that among all the possible energy levels an electron can sit in the presence of a nucleus, there is one, which has THE MINIMAL energy. This energy level is called the ground state. So, even if atoms are in a very very called environment, […]

What minimum force must you exert to get the fridge to start moving? 660 newtons How is Mue calculated? It is usually symbolized by the Greek letter mu (μ). Mathematically, μ = F/N, where F is the frictional force and N is the normal force. Because both F and N are measured in units of […]

How do you survive freezing temperature without heat? Here are a few tips to stay warm and happy this winter with no heat: Reduce as much heat loss as possible. Put blankets over all the windows and outside doors, and bean bag draft busters at the base of every door. Adding Insulation Supercharges Your Walls. […]