What is the primary function of a stretch reflex? The stretch reflex (myotatic reflex), or more accurately “muscle stretch reflex”, is a muscle contraction in response to stretching within the muscle. The reflex functions to maintain the muscle at a constant length. What do stretch receptors do? muscle systems …has important sensory structures called stretch […]
Which element has no electrical charge at all?
Which element has no electrical charge at all? Answer: Atoms of all elements – except for most atoms of hydrogen – have neutrons in their nucleus. Unlike protons and electrons, which are electrically charged, neutrons have no charge – they are electrically neutral. What is a subatomic particle with a positive charge? The nucleus contains […]
What is the electromagnetic spectrum simple definition?
What is the electromagnetic spectrum simple definition? Electromagnetic spectrum, the entire distribution of electromagnetic radiation according to frequency or wavelength. The electromagnetic spectrum comprises the span of all electromagnetic radiation and consists of many subranges, commonly referred to as portions, such as visible light or ultraviolet radiation. What is the electromagnetic spectrum and why is […]
Do standing waves carry energy from one area to another?
Do standing waves carry energy from one area to another? Standing waves may be created from two waves (with equal frequency, amplitude and wavelength) travelling in opposite directions. Unlike the travelling waves, the standing waves do not cause a net transport of energy (because the two waves which make them up are carrying equal energy […]
Is neon shiny or dull?
Is neon shiny or dull? Element Luster Malleability Neon Colorless Not able to be stretched Silicon Dull, metallic Brittle, shatters when shaped Sulfur Dull Cannot be stretched Manganese Shiny Can be hammered into thin sheets Is helium bad for? The more pure helium you inhale, the longer your body is without crucial oxygen. Breathing in […]
How many bodies are in our solar system?
How many bodies are in our solar system? Our solar system is made up of a star, eight planets and countless smaller bodies such as dwarf planets, asteroids and comets. How did the solar system form step by step? Formation. Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar […]
Why is Hohmann transfer most efficient?
Why is Hohmann transfer most efficient? The most energy-efficient way to move between circular orbits is the Hohmann transfer orbit [1]. The first burst of thrust is calculated so that the maximum altitude of the resulting elliptical orbit is the desired altitude of the new circular orbit. Why is Hohmann transfer efficient? The Hohmann transfer […]
Where does salt we eat come from?
Where does salt we eat come from? Nutrition and healthy eating Sea salt is produced through evaporation of ocean water or water from saltwater lakes, usually with little processing. Depending on the water source, this leaves behind certain trace minerals and elements. What if we ran out of minerals? Minerals make up most of what […]
What were the first hominins?
What were the first hominins? australopithecines What four characteristics define a hominin? Some characteristics that have distinguished hominins from other primates, living and extinct, are their erect posture, bipedal locomotion, larger brains, and behavioral characteristics such as specialized tool use and, in some cases, communication through language. What are 5 types of hominids? In this […]
What is the difference between a supersaturated solution and a saturated solution?
What is the difference between a supersaturated solution and a saturated solution? A saturated solution contains the maximum amount of solute that will dissolve at that temperature. Any further addition of solute will result in undissolved solid on the bottom of the container. A supersaturated solution contains more than the maximum amount of solute that […]