Category: Physics

Which seeds have wings? Some examples of trees with winged seeds are pine, maple, jacaranda and catalpa. Pines. Some pine trees have small seeds with papery wings that allow the seed to rotate as it falls out of the woody female cone when it opens. Maples. Maples (Acer spp.) have propeller-type winged fruits. Bignonia Family […]

How big were the waves in The Perfect Storm? “Wave heights with the ‘perfect storm’ reached as high as 100 feet with winds as high as 70 mph at the peak of the storm,” Boston said. “Sandy’s winds and waves were even higher.” Some of the waves that capsized the Andrea Gail were 39 feet […]

What are the 4 phases of emergency management? These common elements allow you to prepare for and protect yourself and your animals from disaster. Emergency managers think of disasters as recurring events with four phases: Mitigation, Preparedness, Response, and Recovery. The following diagram illustrates the relationship of the four phases of emergency management. What is […]

Is a yoyo a weapon? It is rumored that it was used as a weapon for hunting game or other land animals. The yo-yos was actually first made by the Duncan yo-yo demonstrators in the 1930s and the yo-yo today is now considered a weapon due to the Duncan brothers making up the rumor of […]

Can frozen juice concentrate go bad? Properly stored, frozen orange juice concentrate will maintain best quality for about 1 year in the freezer. Frozen orange juice concentrate that has been kept constantly frozen at 0°F will keep safe indefinitely, as long as it has been stored properly and the package is not damaged. How long […]

Why do protons stay together in the nucleus? Inside the nucleus, the attractive strong nuclear force between protons outweighs the repulsive electromagnetic force and keeps the nucleus stable. Outside the nucleus, the electromagnetic force is stronger and protons repel each other. Why does the nucleus not fly apart? The nucleus of an atom (the core) […]

How many groups are on the central atom? There are five groups around the central atom, three bonding pairs and two lone pairs. How many lone pairs are in ab3? Hint: The shape of AB3 with one lone pair on central atom can be pyramidal . if there is no lone pair of electrons present […]

How do you achieve long term economic growth? 2. Long-term economic growth Increased capital. e.g. investment in new factories or investment in infrastructure, such as roads and telephones. Increase in working population, e.g. through immigration, higher birth rate. Increase in labour productivity, through better education and training or improved technology. What are the consequences of […]

What type of risk factor is age? Abstract. The risk of developing cardiovascular disease (CVD) is generally dependent on the presence or absence of traditional risk factors. Age is a well-known traditional risk factor, generally considered nonmodifiable. What are the two type of risk factors? Types of Risk Broadly speaking, there are two main categories […]

What does CSF feel like? Symptoms of a cerebrospinal fluid (CSF) leak can include: Headache, which feels worse when sitting up or standing and better when laying down; may come on gradually or suddenly. Vision changes (blurred vision, double vision, visual field changes) Hearing changes/ringing in ears. Where can CSF be found? The CSF occupies […]