Description
An electric appliance supplies 6000 J/min heat to the system. If the system delivers a power of 90W. How long it would take to increase the internal energy by 2.5 × 103 J ?
Frequently Asked Questions
How to prepare for IIT-JEE Physics?
To prepare for IIT-JEE Physics, focus on understanding concepts rather than memorizing formulas. Practice solving a variety of problems, especially previous years’ questions. Create a study schedule that covers all topics, with extra time for challenging areas like Mechanics and Electromagnetism. Regular revision and mock tests are essential for success.
What is the difference between elastic and inelastic collisions?
In elastic collisions, both momentum and kinetic energy are conserved. Examples include collisions between hard billiard balls. In inelastic collisions, only momentum is conserved while some kinetic energy is converted to other forms like heat or sound. Most real-world collisions are inelastic to some degree.
What is the difference between heat and temperature?
Heat is the total energy of molecular motion in a substance, measured in joules (J) or calories. Temperature is a measure of the average kinetic energy of molecules in a substance, measured in degrees Celsius (°C) or Kelvin (K). Heat flows from objects at higher temperatures to objects at lower temperatures.
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