Striking a matchstick as after it strikes it gives off both heat and light.
Answer:
Solar energy is a form of smart energy that can be used to heat water for homes.
Explanation:
Solar radiation, as it's well known, is capable of providing light and heat to the planet. The characteristics of the energy provided by the sun make it possible the use as an accessible, clean and cheap energy source.
Solar energy has properties that make it a form of smart energy:
- It's a natural energy source
- Clean energy and doesn't represent a risk for the environment.
- It's a renewable energy source.
- It's always available and economical.
Solar panels are devices that have been designed to capture energy from the sun and turn it into a source of energy for households. When talking about smart energy, solar energy represents a useful alternative for home use, including the action of heating water.
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Answer:It is considered the cause of most diseases.
Explanation:
Homostasis is the quality or feature of the body of the organism to keep the internal temperature constant as compared to changes occurring in the external environment.
Homeostasis imbalance is a condition in which the body becomes incapable of maintaining the hoemostasis. This results in diseases and deficiencies. This is because of inability of the body to restore stable, and functional internal environment.
Answer:
7
Explanation:
Mechanical advantage is given by the ratio of the distance of the fulcrum from the two objects of the system.
Here the boulder is from the fulcrum and the mass at the other end of the lever is from the fulcrum.
So, mechanical advantage is given by
So, mechanical advantage of the board is 7.