2.Chemical energy is converted to mechanical energy.
3. Chemical energy is converted to heat energy.
4. Chemical energy is converted to mechanical and kinetic energy.
the correct answer is 1. Chemical energy is converted to mechanical and heat energy.
When the boy eats apple, the chemical energy of the apple first converted in the heat energy in the process of digestion, which maintains our body temperature, than the body of the boy converts the heat energy into mechanical energy.
Therefore the correct option is 1.
Answer:
Chemical energy is converted to mechanical and heat energy.
Explanation:
B.Neutral charges are attracted to neutral charges.
C.Opposite charges are not attracted to each other.
D.Positive charges are attracted to negative charges.
D.Positive charges are attracted to negative charges.
Answer:
D. Positive charges are attracted to negative charges.
Explanation:
The interaction between two like-charged objects is repulsive. The interaction between two oppositely charged objects is attractive. ... Positively charged objects and neutral objects attract each other; and negatively charged objects and neutral objects attract each other.
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Magnets are used in the doors of refrigerators and cupboards to keep the doors closed firmly, create a reliable seal, and increase energy efficiency.
Magnets are often fitted to the doors of refrigerators and cupboards for a reason rooted in physics. This setup helps in keeping the doors closed firmly. The magnets are usually embedded in the door seal, creating an attraction with the metal body of the refrigerator or cupboard. This magnetic attraction pulls the door seal flush against the refrigerator when the door is closed, making an airtight seal. As a result, it prevents the cold air inside the refrigerator from escaping, thereby maintaining the interior temperature and ensuring energy efficiency.
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Newton's laws of motion can be applied in a car crash to explain the physics and forces involved.
In a car crash, Newton's laws of motion can be applied in several ways:
Overall, Newton's laws of motion help explain the physics behind car crashes and the forces involved.