Energy

Yes, according to Einstein's equation E=mc^2, matter can be converted into energy. This transformation occurs in processes like nuclear reactions, where a small amount of matter is converted into a large amount of energy.

Solar energy would be the most useful alternative energy source for my location due to ample sunlight throughout the year. This would help reduce dependency on traditional fossil fuels and lower carbon emissions in my community. Additionally, solar energy is becoming more cost-effective and scalable, making it a practical choice for residential and commercial use.

A bike is considered a device that can convert energy because it allows a person to convert the energy from pedaling into kinetic energy to move the bike. As the pedals turn, the mechanical energy provided by the person is transferred to the wheels, propelling the bike forward.

Some different forms of potential energy include gravitational potential energy (associated with an object's height above the ground), elastic potential energy (stored in stretched or compressed objects like springs), chemical potential energy (stored in chemical bonds), and electrical potential energy (associated with charged particles in an electric field).

Yes, the energy in food initially comes from the sun as plants use sunlight to convert it into chemical energy through photosynthesis. When animals eat plants or other animals, they obtain this stored energy and use it for their own energy needs.

Coal gas. Made from heating coal or coke. There was lots of sulpher and carbon monoxide in it. It was very dangerous. Thus, committing suicide by sticking your head in the oven. Natural gas today is so clean and odorless, they have to put odor in it to be detected.

Yes, machines can transform energy from one form to another. For example, a generator can convert mechanical energy into electrical energy. Similarly, an electric motor can transform electrical energy into mechanical energy.

At the top of the second hill, the coaster has maximum potential energy and minimum kinetic energy. As the coaster descends, potential energy decreases while kinetic energy increases due to the conversion of potential energy into kinetic energy.

An example of kinetic energy is a moving car. As the car is in motion, it possesses kinetic energy due to its velocity. The faster the car is moving, the more kinetic energy it has.

A fire hydrant stores and provides potential energy in the form of high-pressure water that is ready to be used in case of a fire emergency.

An energy change refers to the conversion or transfer of energy from one form to another within a system. It can involve processes such as potential energy converting to kinetic energy or electrical energy converting to heat energy. Energy changes play a fundamental role in the functioning of physical systems and processes.

False. Earth's natural insulating blanket is the atmosphere, which helps to regulate the planet's temperature by trapping heat from the sun. The biosphere refers to the regions of land, water, and air where living organisms can be found.

When the switch is closed, the stored chemical energy in the dry cell is converted into electrical energy. This allows the flow of electrons from the negative terminal to the positive terminal through the external circuit, allowing devices to operate.

Another name for the absorption of thermal energy by the atmosphere is the greenhouse effect. This process involves certain gases in the atmosphere trapping heat from the sun, leading to an overall warming of the Earth's surface.

The amount of energy the body uses at complete rest is known as the Basal Metabolic Rate (BMR). This represents the number of calories required to maintain essential bodily functions such as breathing, circulation, and cell production while at rest. BMR can vary depending on factors such as age, gender, weight, and muscle mass.

Yes, the mass of an object does influence its potential energy, especially in gravitational potential energy. The greater the mass of an object, the more potential energy it will have when raised to a certain height.

The 7 types of light energy are radio waves, microwaves, infrared radiation, visible light, ultraviolet light, X-rays, and gamma rays. Each type of light energy has different wavelengths and frequencies, and they all fall within the electromagnetic spectrum.

Strain energy is a form of potential energy that is stored within a material when it is deformed or strained. When a material is subjected to external forces causing deformation, the potential energy stored in the material is referred to as strain energy. This energy is released when the material returns to its original shape, such as when a spring is compressed and then released.

Water freezing is not considered energy itself, but rather a process that releases energy. When water freezes, it releases heat energy into its surroundings. The process of freezing involves the removal of energy from the water molecules, causing them to slow down and form a solid structure.

Potential energy is the energy that can be released, but has not been released yet.

Ex. Sitting at the top of a slide is potential energy. You will eventually have to go down.

Kinetic energy is the energy that is being released at any moment.

Ex. As you slide down the slide kinetic energy is released.

The thermal energy comes from friction between the firefighter's clothing or gear and the pole as they slide down. This friction generates heat, which is a form of thermal energy.

Gas energy works by burning the gas (such as natural gas or propane) in a controlled setting to produce heat. This heat is then harnessed to generate electricity, heat water for residential or industrial use, or provide warmth for heating systems. Gas energy is a reliable and efficient source of energy that is commonly used in homes and industries around the world.

If you mean "free of cost", you simply need some investment to use any energy source.If you mean free energy in the sense of perpetual motion machine, this simply isn't how our Universe seems to work. There is no known method to get energy where there was none before. Strange as it may seem, this "conservation of energy" is related (by Noether's Theorem) with the fact that physical laws don't change over time - in other words, if it were possible to get "free energy", then physical laws would change over time!

When you remove thermal energy from an object, its particles slow down and the temperature decreases, making the object cold. If you add thermal energy, the particles speed up and the temperature increases, making the object hot. Cold is the absence or lower level of thermal energy, so taking away thermal energy is the only way to make something cold.