Category: Physics

Is it better to steam or boil dumplings? To boil dumplings, fill a large pot two-thirds of the way with water. Cover and bring to a boil over high heat. Steaming is a much faster method as you only need to bring a few cups of water to a boil instead of an entire pot. […]

Are fault lines dangerous? Major active faults such as the Hayward Fault are associated with many hazards. The most obvious hazard is that of large earthquakes, which induce ground shaking over a large area that can cause heavy objects to fall and windows to shatter, and can cause structural damage to buildings and bridges. How […]

What periodic trend is most important for determining metal reactivity? Metallic and Non-metallic Character Within a compound, metal atoms have relatively low attraction for electrons, as indicated by their low electronegativities. By following the trend summary in the figure below, you can see that the most reactive metals would reside in the lower left portion […]

What happens when two neutral charged objects are rubbed together? When an atom has an equal number of protons and electrons, the charges cancel each other and the atom is said to be neutral. Rubbed together in a dry environment, some items have lost electrons and become positively charged, while others have gained electrons and […]

What are disadvantages of modeling? Disadvantages of modelling and simulation Mistakes may be made in the programming or rules of the simulation or model. The cost of a simulation model can be high. The cost of running several different simulations may be high. Time may be needed to make sense of the results. What are […]

What happens if thrust is greater than drag? If thrust is greater than drag, the aircraft will speed up, and subsequently, if drag is greater than the thrust, you’ll slow down. Lift is the force that counteracts the weight of an object in order to keep it in the air. What are 4 things that […]

What makes a boiling egg float? Eggs have an air cell that becomes larger as the egg ages and acts as a buoyancy aid. An egg can float in water when its air cell has enlarged sufficiently to keep it buoyant. A spoiled egg will have an unpleasant odor when you break open the shell, […]

How can I strengthen my heart? Top 10 healthy heart tips Give up smoking. If you’re a smoker, quit. Get active. Getting – and staying – active can reduce your risk of developing heart disease. Manage your weight. Being overweight can increase your risk of heart disease. Eat more fibre. Cut down on saturated fat. […]

Why is the B string so hard to tune? Explained in short, the reason why the B string always sounds out of tune is that we use the 12-tone Equal Temperament tuning system to tune the instrument, which is not 100% accurate in comparison to the way sounds occur in nature. What is standard guitar […]

What is the recommended amount of physical activity for children? Children and adolescents ages 6 through 17 years should do 60 minutes (1 hour) or more of moderate-to-vigorous intensity physical activity each day, including daily aerobic – and activities that strengthen bones (like running or jumping) – 3 days each week, and that build muscles […]