Why Do Substances Expand on Heating? At a basic level, most substances expand when they are heated due to the increase in the energy of their particles, be they atoms, molecules, or ions. Substances expand when heated due to an increase in the kinetic energy of their constituent particles (atoms, molecules, or ions). As heat …
Introduction to Work, Energy, and Power- Every day, whether we realize it or not, we encounter the principles of work, energy, and power. When we push a door open, lift a heavy box, or even charge our mobile phones, we’re stepping into the world of work, energy, and power. Work: Think of work as the …
Ques: Write the formula for work done on a body when the body moves at an angle to the direction of force. Give the meaning of each symbol used. Sol.: When a body moves at an angle to the direction of force, the formula for work done can be derived using the dot product of …
When it comes to the geometric construction of images formed by a concave lens, there are a few key steps to follow. Let’s explore the process in detail: Start with the Lens Draw a vertical line to represent the principal axis of the concave lens. Then, draw the shape of the lens, which is thicker …
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Like solids, liquids also expand when heated and contract when cooled due to thermal expansion. However, unlike solids, liquids do not have a definite shape and can take the shape of the container they are in. When a liquid is heated, the kinetic energy of its molecules increases and they begin to move more rapidly. …
Escape velocity is the minimum speed that an object must attain in order to escape the gravitational pull of a planet, moon, or other celestial body. It is the speed at which the object’s kinetic energy is equal to its gravitational potential energy, allowing it to break free from the gravitational field and continue moving …
When solids are heated, they expand in all directions. The two types of expansion that occur in solids are Linear expansion and Superficial (or areal) expansion. Linear expansion Linear expansion refers to the increase in the length of a solid when heated. This can be expressed mathematically using the equation: ΔL = αLΔT where ΔL …
Faraday’s experiment, also known as Faraday’s induction experiment, was a series of experiments performed by the British scientist Michael Faraday in 1831. The experiments demonstrated the relationship between a changing magnetic field and an induced electric current. Faraday discovered that if a magnet is moved near a closed loop of wire, an electric current is …
Ques: Does Earth act as a huge bar magnet? Sol: When a freely suspended magnetic needle comes to rest approximately aligned with the geographical north-south axis at a specific location on Earth, it provides evidence that the Earth functions as a giant magnetic bar. This alignment suggests that the Earth possesses magnetic poles in close …
Difference between Elastic waves and Electromagnetic waves Elastic waves and electromagnetic waves are two different types of waves that propagate through different mediums and exhibit different properties. Here are some key differences between them: Nature of propagation: Elastic waves are mechanical waves that require a medium (solid, liquid, or gas) to travel through. They propagate …
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