When discussing magnetic fields we could say that 2 points? When discussing magnetic fields we could say that metals can become magnetic if they have many spinning electrons that create magnetic fields. metals are magnets because they have more electrons than non–magnetic materials. non–paired electrons spin in opposite directions creating a magnetic field. What are […]
Is it normal to hate roller coasters?
Is it normal to hate roller coasters? While roller coasters are a popular theme park attraction, certain people feel nauseated, afraid, dizzy, or unsafe when riding roller coasters. In many cases, this fear is related to other phobias – such as acrophobia, claustrophobia or emetophobia – a condition like vertigo, or to a traumatic event. […]
What is the charge for calcium ion?
Can you get cancer from sitting in front of a heater?
Can you get cancer from sitting in front of a heater? We know what it is, but there have been very few direct sources of interference to the natural body functions, that result in the mutations of the cell divisions, that is commonly called ‘cancer’. Sitting in front of an “infra Red” heater, is not […]
What is a good weight to curl?
What are the causes and effects of eutrophication?
What are the causes and effects of eutrophication? “Eutrophication is an enrichment of water by nutrient salts that causes structural changes to the ecosystem such as: increased production of algae and aquatic plants, depletion of fish species, general deterioration of water quality and other effects that reduce and preclude use”. What can humans do to […]
Is tens AC or DC?
Is tens AC or DC? A standard TENS unit typically delivers a low-frequency (<50 Hz) alternating current to a focused treatment area. Due to the nature of low-frequency, however, these signals have a low capacity to overcome skin resistance – resulting in these units only providing pain relief via the Gate Control Theory while being […]
Why is the potential energy of a free particle zero?
How do muscles get oxygen?
How do muscles get oxygen? Oxygen is supplied to the muscles via red blood cells. Red blood cells carry hemoglobin which oxygen bonds with as the hemoglobin rich blood cells pass through the blood vessels of the lungs. The now oxygen rich blood cells carry that oxygen to the cells that are demanding it, in […]
Why can some mixtures be separated by chromatography?
Why can some mixtures be separated by chromatography? Chromatography can be used to separate mixtures of coloured compounds . As the solvent soaks up the paper, it carries the mixtures with it. Different components of the mixture will move at different rates. This separates the mixture out. How many main ways are there to separate […]