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Can tension ever zero?
Can tension ever zero? Zero tension is slack. A string or rope is often idealized as one dimension, having length but being massless with zero cross section. Does negative stress mean compression? Compressive stress has stress units (force per unit area), usually with negative values to indicate the compaction. Compressive stress is defined in the […]
How do athletes get energy?
How do athletes get energy? Carbohydrates or “carbs” (found in pasta, bread, cereal, rice, grains, potatoes, fruit, vegetables, milk, yogurt, etc.) are especially important for athletes because they supply the body with glucose for energy. Extra glucose is stored in the muscles and liver as glycogen, your energy reserve. How do I get energy to […]
What will happen if tectonic plates continue to move?
What will happen if tectonic plates continue to move? One big problem with plate tectonics stopping is that plate motion is the mechanism by which Earth is cooling down and getting rid of its internal heat. If the plates stopped moving, the planet would have to find a new and efficient means to blow off […]
What are the negative social impacts?
What are the negative social impacts? These negative social impacts include; social change; changing values; increased crime and gambling; changes in moral behaviour; changes in family structure and roles; problems with the tourist-host relationship and the destruction of heritage. What are the negative effects of tourism and hospitality in the economy? Increasing demand for basic […]
What light Cannot cause skin cancer?
What light Cannot cause skin cancer? Most skin cancers are caused by exposure to ultraviolet (UV) light. When you don’t protect your skin, UV rays from sunlight or tanning beds can damage your skin’s DNA. When the DNA is altered, it can’t properly control skin cell growth, leading to cancer. Can UV LED lights cause […]
How many amps is 220 volts?
What is the biggest challenge facing farmers over the next decade?
What is the biggest challenge facing farmers over the next decade? The following five challenges to the future of agriculture and food security exist on almost every continent in one form or another: constraints on resources from fossil fuel to water to phosphorus; land management problems resulting from tillage to monoculture to improper grazing practices; […]
Why does metal heat up fast?
Why does metal heat up fast? Why do metals conduct heat so well? The electrons in metal are delocalised electrons and are free moving electrons so when they gain energy (heat) they vibrate more quickly and can move around, this means that they can pass on the energy more quickly. Does glass or metal heat […]
Do Town criers get paid?
Do Town criers get paid? These days, town criers are typically paid by appearance, although free ‘crys’ for charitable events are very often a large part of their duties. Are town criers paid? Bellmen would be paid for each proclamation they made: in the 18th century the rate was between 2d and 4d per cry. […]