How does the magnetic force change if the distance between two objects is increased? Magnetic force obeys an inverse square law with distance. If the distance between two magnets is doubled the magnetic force between them will fall to a quarter of the initial value. (F/4) If the distance between two magnets is halved the […]
Why are spectral lines not perfectly sharp?
Why are spectral lines not perfectly sharp? Real spectral lines are broadened because: – Energy levels are not infinitely sharp. – Atoms are moving relative to observer. energy E of levels with finite lifetimes. Determines the natural width of a line (generally very small). What causes absorption lines? Absorption lines occur when an atom, element […]
What causes the solar activity cycle?
What causes the solar activity cycle? The Sun’s magnetic field goes through a cycle, called the solar cycle. Every 11 years or so, the Sun’s magnetic field completely flips. This means that the Sun’s north and south poles switch places. Then it takes about another 11 years for the Sun’s north and south poles to […]
Who accepts user stories in agile?
Who accepts user stories in agile? Anyone can write user stories. It’s the product owner’s responsibility to make sure a product backlog of agile user stories exists, but that doesn’t mean that the product owner is the one who writes them. Over the course of a good agile project, you should expect to have user […]
How many vitamins can I take a day?
What would happen to flowers without bees?
What household items have ionic compounds?
What household items have ionic compounds? Examples of ionic compounds in everyday life include table salt, baking soda, lye, Epsom salt, and bleach. Is Salt covalent or ionic? Salt is made up of sodium and chloride and is ionically bonded. Sugar, on the other hand, is composed of carbon, oxygen, and hydrogen and has covalent […]
What are the process of erosion?
What are the process of erosion? Erosion is the geological process in which earthen materials are worn away and transported by natural forces such as wind or water. Most erosion is performed by liquid water, wind, or ice (usually in the form of a glacier). If the wind is dusty, or water or glacial ice […]
Are there bears in the Grand Canyon?
Are there bears in the Grand Canyon? Are there bears in the Grand Canyon? Yes, according to the National Park Service – some black bears can be found in the conifer forests around the North Rim. Are there wolves in Grand Canyon? Grand Canyon National Park, where animals are protected, is part of the region. […]
What is the official world time?
What is the official world time? Coordinated Universal Time or UTC is the primary time standard by which the world regulates clocks and time. It is within about 1 second of mean solar time at 0° longitude, and is not adjusted for daylight saving time. It is effectively a successor to Greenwich Mean Time (GMT). […]