Physics, 20.11.2019 05:31 brandicarney70p8jlsp

Why scientifically died it hurt when you stub your toe in the corner of a wall?

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Each digit has two nerves, one on either side,” Dr. Botek says. “So no matter where you hit your toe or how you stub it, it’s going to affect a nerve impulse from your toe to your brain.”
This nerve impulse is modulated by sensory neurons called nociceptors, which fire off information to the brain whenever they sense an external stimulus that may cause harm to the body. That includes extreme heat or cold, certain chemicals that could burn the skin, or mechanical pressure that could damage the tissue (like the force involved when you bang a toe into the hard foot of a chair, for instance).
“When that specialized neuron gets activated, it fires, sending that information to the spinal cord,” Jeffrey Mogil, Ph.D., a neuroscientist and professor of pain studies at McGill University, tells SELF. From there, the information is processed by the brain and, eventually, you perceive it as pain.

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so here is the information for current research:

-nrel's geothermal analysts, scientists, and engineers perform a full range of research from developing advanced methods of locating and accessing geothermal resources to exploring innovative technologies to extract and produce clean energy from the heat of the earth

and here is the information for the technology of geothermal energy:

-it's clean and sustainable

-resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma

-almost everywhere, the shallow ground or upper 10 feet of the earth's surface maintains a nearly constant temperature between 50° and 60°f (10° and 16°c)

-geothermal heat pumps can tap into this resource to heat and cool buildings

-a geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger-a system of pipes buried in the shallow ground near the building

-in the winter, the heat pump removes heat from the heat exchanger and pumps it into the indoor air delivery system

-in the summer, the process is reversed, and the heat pump moves heat from the indoor air into the heat exchanger

-the heat removed from the indoor air during the summer can also be used to provide a free source of hot water

Answer from: Quest

it has to be b, about 97 percent.

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