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Energy

The Energy category covers the description, definition, and use of all types of energy. Questions of a general nature can be put in the general Energy category. Other sub-categories exist for Fossil fuels, Nuclear energy, and renewables such as Wind, Solar, Hydro, Tidal, and Wave power.

24,905 Questions

How do negative ion bracelets work?

Ionic bracelets

Australian Watchdog

http://www.abc.net.au/news/2010-12-23/watchdog-says-power-wristbands-a-crock/1884386?section=business

Federal Trade Commission

http://www.ftc.gov/opa/2003/06/qtinc.shtm

Mayo Clinic research

http://www.mayoclinicproceedings.com/content/77/11/1164.full.pdf+html

Pacific University Research

http://commons.pacificu.edu/cgi/viewcontent.cgi?article=1015&context=pnwestjurca

Review of Magnetic and Electromagnetic Therapy

http://www.skeptically.org/quackery/id4.html#_edn1

The above is a list of links to government sites, mainstream media sources and peer reviewed (meaning that they were checked by other scientists, like film critics reveiw film) scientific journals (reports of experiments) all of whitch show that these do not work and record how manufacturers have been charged and proscuted for false advertising.

What is the science of the relations of matter and energy?

That field is known as physics, which studies the interactions of matter and energy in the universe. Physics seeks to understand the fundamental laws and principles that govern these interactions, ranging from the smallest particles at the quantum level to the largest structures in the cosmos.

What is the main source of life?

The main source of life on Earth is the Sun. It provides the energy needed for photosynthesis in plants, which is the foundation of the food chain that sustains all living organisms.

What type of energy comes from the heat of volcanoes?

Geothermal energy comes from the heat of volcanoes, which is harnessed for power generation and heating systems. It involves tapping into the Earth's natural heat to produce electricity or for heating purposes.

Is it ever too cold to start a fire?

Well it depends how coldm it is becasue you need, heat, fuel and oxygen so if it is too cold I guess if you didn't have any heta sources, e.g. a blow tourch then it would be too cold to start a fire.

Does thermal energy depend on the amount of a substance?

Yes, the thermal energy of a substance depends on its mass because thermal energy is a form of internal energy related to the motion of particles within the substance. More particles in a larger amount of substance would have more kinetic energy, contributing to a higher thermal energy.

What is O2G?

Most certainly it means: Oxygen molecules ( O2 ) in gaseous state ( O2,g or (O2)g )

Note: the letter 'g' should be in subscripted undercase (not Capitalised!)

How cells obtain energy when oxygen is not available?

Cells can obtain energy in the absence of oxygen through a process called fermentation. This involves breaking down glucose into ATP without the need for oxygen. However, fermentation is not as efficient as aerobic respiration, and it produces byproducts such as lactic acid or ethanol.

Does any place is available where energy is not present?

Please re-phrase the question. Your question is unclear to me.

What is bio-transformed?

Bio-transformation refers to the process by which an organism transforms a particular substance into a different form, such as in the case of metabolic reactions within a cell. This term is commonly used in the context of biodegradation, where microorganisms break down pollutants into simpler, less harmful compounds. In biotechnology, bio-transformation can also refer to the modification of a compound by enzymes or other biological agents to create a desired product.

Hydrogen fuel cells combine hydrogen and oxygen to produce water and energy Assume 1 kg of fuel is used and the mass of the water produced is 1.10 x 10-11 kg How much energy is produced by this fuel?

The energy produced by the fuel can be calculated using the energy equivalence of mass via the formula E=mc^2, where E is energy, m is mass, and c is the speed of light. Given that the mass of the water produced is 1.10 x 10^-11 kg, substituting this value into the formula will provide the energy produced from the fuel.

How can you find the kinetic energy without velocity in the question?

To find kinetic energy without velocity, you can use the formula for kinetic energy, which is KE = 0.5 * m * v^2, where m is the mass of the object and v is the velocity. If velocity is not given, you will need additional information, such as the height from which an object falls (in the case of gravitational potential energy) or the force applied over a distance (in the case of work-energy theorem), to calculate kinetic energy without velocity.

Which type of energy cannot do work in living organisms?

Thermal energy cannot perform work in living organisms because it is random molecular motion that does not have direction or organization to drive biological processes.

Why geothermal energy and nuclear energy different in respect?

Geothermal energy comes from the Earth's core. As we can't examine this directly, scientists are uncertain just what produces this energy. Some will come from radioactive decay, and some is the residue from when the Earth was formed as a lump of hot matter, from some unknown supernova. As far as we know there is no nuclear fission process going on in the core, though I don't see why this should be discounted. Nuclear energy as produced by man is definitely a process of nuclear fission, so this is the difference.

Do all living things have movement?

No, not all living things have movement. Some organisms like plants are considered living, but they exhibit limited or no movement. Movement is not a defining characteristic of life, but rather a trait that some living things have evolved to possess for survival and functionality.

What effect does the waste energy from a transformer have on the air around the?

The waste energy from a transformer can increase the temperature of the air around it due to heat dissipation. This can lead to a localized warming effect, which may impact the immediate surroundings by potentially altering air currents or affecting nearby equipment or structures. Additionally, the waste energy may also contribute to overall energy loss and reduced efficiency of the transformer system.

What is kinetic awareness?

Kinetic awareness is a practice that involves increasing body awareness through movement. It focuses on understanding how we move in space and how our bodies respond to different stimuli. By paying attention to our movements and sensations, we can improve coordination, posture, and overall physical well-being.

Path of an egg cell?

The path of an egg cell begins in the ovary, where it matures into an ovum during ovulation. From there, it travels through the fallopian tube towards the uterus. If fertilization occurs by a sperm cell during its journey, the egg cell will implant in the uterus and develop into a pregnancy.

What gasoline brands do not contain mmt?

Gasoline brands that do not contain MMT include BP, Chevron, ExxonMobil, Shell, and Valero. It's always a good idea to check with the specific gas station or brand to confirm that they do not use MMT in their fuel.

The earth most important nonrenewable energy source is?

Non-renewable energy sources are those that drain the fossil reserves. The most important non-renewable energy source on Earth is coal. If something is not done to make the switch to clean or green energy, the coal supply is not expected to last for more than 40 to 50 years.

How does surface water move?

Surface water moves through processes such as gravity, wind, and slope. It flows downhill following the path of least resistance, collecting in rivers, streams, and eventually into oceans. Wind can also create waves that move surface water.

Can seismic energy be converted into electrical energy?

Yes, seismic energy can be indirectly converted into electrical energy through systems like piezoelectric generators, which convert mechanical stress from seismic waves into electrical voltage. However, it is not a widely used method due to the challenges in scalability and efficiency.

Why don't we harness the energy of volcanoes?

We do, in a way. It's called geothermal energy, and it involves (basically) placing a pipe into a geothermal hot spot, and then extracting hot water or even steam to heat structures above. The steam can also be used to spin a turbine and generate electricity, which can be used remotely via transmission lines. The heat resources within the earth are massive compared to both what is currently captured, and even compared to what we would need to power everything up.

What is the name for someone who looks for new source of energy on earth?

A person who looks for new sources of energy on Earth is typically referred to as an energy researcher, energy scientist, or renewable energy specialist. Their role involves studying, developing, and implementing innovative solutions to meet the growing energy demands sustainably.

Is sunlight mechanical energy?

No, it is electrical and light energy, which transforms into heat energy.