Category: Physics

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? 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? There are no amps in 220 volts. Amperage is the current drawn by the appliance connected to 220 volts AC. A small phone charger may draw 150milli Amps or a heater may draw 10 Amps, while a TV may draw 1 Amp. How many amps does a 12 volt […]

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 […]

Why do eyes turn GREY when you die? Unlike some newborns, whose eyes are blue due to the amount of melanin present at birth, a deceased individual’s eyes will look blue or grayish because of corneal opacity. While the actual color of the iris does not change colors, a hazy film forms over the eyeball […]

Is friction a form of mechanical energy? The mechanical energy of the system remains constant provided there is no loss of energy due to friction. The energy would transform to kinetic energy when the speed is increasing. The mechanical energy of the system increases provided there is no loss of energy due to friction. Is […]

How does conductivity depend on temperature? The conductivity invariably increases with increasing temperature, opposite to metals but similar to graphite. It is affected by the nature of the ions, and by viscosity of the water. In low ionic concentrations (very pure water), the ionization of the water furnishes an appreciable part of the conducting ions. […]

How strong of a telescope do I need to see Saturn? The rings of Saturn should be visible in even the smallest telescope at 25x [magnified by 25 times]. A good 3-inch scope at 50x [magnified by 50 times] can show them as a separate structure detached on all sides from the ball of the […]

Is H2 more stable than H2O? By sharing even with another atom of the same element, the molecule is more stable than a single atom of that element. The O atom of H2O forms the hydrogen bond with the H atom of the halogenoalkane. Why are molecules more stable than separated atoms? A molecule as […]

What is producer gas formula? Producer gas is a mixture of (1) CO + H2 (2) H2 + CH4 (3) CO + N2 + H2 (4) CO + H2O. Unlike natural gas, producer gas is fuel gas that is made from material such as coal. A combustible mixture of nitrogen, carbon monoxide, and hydrogen gives […]