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Slaves, and personal strength. They didn't have strategic resources. Wood and metal were other kinds but basically just whatever they could.
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Has wind energy been used successfully in the past?
yes it has been used successfully in the past
How has wind energy been used in the past?
windmills
How did the past use thermal energy?
Thermal energy was used in direct form of heat to warming up household and cooking.
Which of these kinds of energy does not come from the sun?
nuclear energy
What are the names of two kinds of stored energy?
Potential Energy and Kinetic Energy
Has wind energy been used successfully in the past?
yes it has been used successfully in the past
Structure and functions of the equipment used to produce wave energy?
There are many different kinds of waves, and many different kinds of wave energy, and many different kinds of equipment used to produce such energy. For example, a lightbulb, since light is a form of electromagnetic wave.
Has the energy source been used in the past?
Yes it has been successful in the past
How has wind energy been used in the past?
windmills
Has biomass energy source been successfully used in the past?
Yes it has been successful in the past
Renewable energy comes from natural resources that can be used up What are two kinds of renewable energy?
Your question is not correct. Renewable energy comes from natural resources that are NOT used up. That's why it is called renewable.Two kinds of renewable energy that can be captured to generate electricity are:solar powerwind power.
How did people dry clothes in the past?
They used solar energy
What kinds of things can wind energy be used for?
Wind energy can be used to spin a pinwheel, generate electricity, ruffle a skirt or a flag, or propel a sailboat.
What are 2 examples of how civilization used geothermal energy in the past?
1.) In the past the Japanese would use geothermal energy to heat their water. (although many do that now) 2.)Geothermal energy used to be use to treat skin or eye diseases.
Why isn't chemical energy used?
AnswerChemical energy is one of the types of energy commonly used. In cooking of food, in batteries, in eating. It deals with oxidation and can be transformed to different kinds of energy. Like Chemical energy in cooking of food to heat energy.
Has hydro energy been used successfully in the past?
yes it has been used successfully .....because of what.......
What are the to kinds of energys?
The "two" kinds of energy are real and vector energy. Mot accounting for the two kinds of energy is the cause of current confusion in physics. Newton and Einstein missed the two kinds of energy real and vector. The gravitational energy is E= -mu/r + mcV. The first kind of energy Newton got the real or potential energy -mu/r. The unaccounted for energy is the "vector" energy mcV. The vector energy is the source of "dark energy" and myriad mysteries in cosmology. The Universe has two kinds of numbers, real numbers and vector numbers. This gives two kinds of energy, and two kinds of forces ,etc,etc,etc. Quaternions are the answer to the "two kinds" of energy, "reals and vectors" or quaternions!
