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Where in the universe are heavy elements made?
Light elements are made in light weight stars via stellar nucleosynthesis. Elements as heavy as iron form in the cores of massive stars. Anything heavier than iron requires a supernova--the collapse and explosion of a super massive star.
Does a low mass or high mass sequence star have higher fusion rate during main sequence life?
A high mass star. The temperature and density of the stars core are at the levels necessary to sustain the energy production that supports the remainder of the star. A reduction of energy production would cause the overlaying mass to compress the core, resulting in an increase in the fusion rate because of higher temperatures and pressure. Likewise, an increase in energy production would cause the star to expand, lowering the pressure at the core. Thus the star forms a self regulating system in hydrostatic equilibrium that is stable over the course of its main sequence lifetime The most massive stars may remain on the main sequence for only a few million years, while smaller stars may last for over a trillion years. See link for detailed information. See related questions for an overview.
What conditions contribute to rapid growth in the 21st century?
Conditions such as technological advancements, globalization, innovation, and access to financing can contribute to rapid growth in the 21st century. Additionally, a skilled workforce, supportive government policies, and a strong market demand can also foster rapid growth.
Which sequence of events is consistent with a layer of conglomerate in bedrock just above a layer of shale?
Initially, a period of erosion occurred, leading to the deposition of the shale layer. Subsequently, sediment containing rounded pebbles and cobbles was deposited on top of the shale layer, forming the conglomerate. Over time, compaction and cementation turned the deposited sediments into solid rock layers in the sequence: shale at the bottom, then conglomerate above it.
What two ways does Jupiter's rapid rotation affect the planet?
Jupiter's rapid rotation causes it to bulge at the equator and flatten at the poles, giving it an oblate shape. Additionally, this rapid rotation generates strong magnetic fields and intense atmospheric jet streams on the planet.
What is produced by rapid contraction of a very heavy main sequence star that has run out of fuel?
Supernova
What is produced by rapid contraction of a very heavy main sequence star that run out of fuel?
Supernova
What is produced by rapid contraction of a very heavy main sequence star that has a run out of fuel?
Supernova
What type of muscle is capable of rapid contraction and causes skeletal movement?
Skeletal or voluntary muscle is capable of rapid contraction and is responsible for skeletal movement.
What is a rapid repetitive series of threshold stimuli leading to a single fused sustained contraction?
Sumation of contraction
What is needed to accomplish a strong contraction and are stimulated at a rapid rate?
To accomplish a strong contraction that is stimulated at a rapid rate, the muscle fibers need sufficient ATP for energy production, calcium ions for muscle contraction, and acetylcholine for nerve stimulation. Additionally, a well-coordinated activation of motor units is necessary to achieve a strong and rapid contraction.
What is the side effect of doxapram?
Hyperreflexia (severe rapid tonic contraction of body).
What is sound produced due to rapid expansion and contraction of heated air called?
The sound produced due to the rapid expansion and contraction of heated air is called a "thermal expansion wave" or a "heat-induced acoustic wave." When air is rapidly heated, it expands quickly, creating a pressure wave that propagates as sound. This phenomenon is commonly observed in various natural and man-made processes, such as thunder during a lightning strike or the popping sound of a heated metal object being cooled rapidly.
What is the correct phase order of the stretch shortening cycle?
The correct phase order of the stretch-shortening cycle is eccentric contraction, amortization phase, and concentric contraction. This sequence allows for energy storage during the eccentric phase, a brief pause to transition from lengthening to shortening, and then rapid muscle shortening in the concentric phase for powerful movement.
What is the process by which the body makes heat?
Making heat, or thermogenesis, is actually a side effect of cellular metabolism. As energy is produced, heat is released as a byproduct of the chemical reactions of energy production. Heat can also be produced on a larger scale by shivering (or rapid contraction and relaxation) of the muscles.
What is V-fibrillation?
Ventricular fibrillation is a rapid, irregular and uncoordinated contraction of the cardiac muscles.
What condition is characterized by rapid uncoordinated contractions of cardiac myocytes?
Contraction Band Necrosis
