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Mind Map: Work, Power and Energy | Physics Class 11 - NEET PDF Download

Mind Map: Work, Power and Energy | Physics Class 11 - NEET

The document Mind Map: Work, Power and Energy | Physics Class 11 - NEET is a part of the NEET Course Physics Class 11.
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FAQs on Mind Map: Work, Power and Energy - Physics Class 11 - NEET

1. What is the definition of work in physics?
Ans. In physics, work is defined as the process of energy transfer that occurs when an object is moved over a distance by an external force. Mathematically, it is expressed as W = F × d × cos(θ), where W is work, F is the force applied, d is the distance moved, and θ is the angle between the force and the direction of motion.
2. How is power related to work and energy?
Ans. Power is the rate at which work is done or energy is transferred over time. It is calculated using the formula P = W/t, where P is power, W is the work done, and t is the time taken. This means that higher power indicates that work is being completed in a shorter time frame.
3. What are the different forms of energy?
Ans. Energy exists in various forms, including kinetic energy (the energy of motion), potential energy (stored energy due to position), thermal energy (energy related to temperature), chemical energy (energy stored in chemical bonds), and electrical energy (energy due to the flow of electric charge).
4. What is the work-energy theorem?
Ans. The work-energy theorem states that the work done on an object is equal to the change in its kinetic energy. This means that if work is performed on an object, it will result in a change in the object's speed and thus its kinetic energy, given by the equation W = ΔKE, where ΔKE is the change in kinetic energy.
5. How can energy be conserved in physical systems?
Ans. Energy conservation in physical systems can occur through various mechanisms, such as converting one form of energy to another without any loss, ensuring that the total energy remains constant. This principle is encapsulated in the law of conservation of energy, which states that energy cannot be created or destroyed, only transformed from one form to another.
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