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Why is the classical (Rutherford) model for an atom, of electron orbiting around the nucleus, not able to explain the atomic structure?
The classical Rutherford model fails because orbiting electrons, according to electromagnetic theory, should continuously emit radiation, lose energy, and spiral into the nucleus. This instability cannot explain atomic stability or discrete spectral lines observed in atomic emission, contradicting eRead more
The classical Rutherford model fails because orbiting electrons, according to electromagnetic theory, should continuously emit radiation, lose energy, and spiral into the nucleus. This instability cannot explain atomic stability or discrete spectral lines observed in atomic emission, contradicting experimental results.
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Explain the purpose and benefits of sectional breathing.
Sectional breathing is a Prānāyāma technique that consciously directs breath to specific lung sections: abdominal, thoracic, and clavicular. This practice enhances respiratory awareness, improves lung efficiency, and ensures optimal oxygenation of the blood. By encouraging deep, mindful breathing, iRead more
Sectional breathing is a Prānāyāma technique that consciously directs breath to specific lung sections: abdominal, thoracic, and clavicular. This practice enhances respiratory awareness, improves lung efficiency, and ensures optimal oxygenation of the blood. By encouraging deep, mindful breathing, it reduces anxiety, calms the mind, and supports overall lung health. Regular practice fosters better control over breathing patterns, contributing to emotional balance and improved physical vitality.
See lessWhich one of the following is not a unit of Young’s modulus?
Young's modulus is defined as stress divided by strain, where: Stress = Force / Area (unit: Nm⁻² or Pascal) Strain is dimensionless, so Young's modulus has the same unit as stress, i.e., Nm⁻², Pascal (Pa), or derived units like megapascals (MPa). Now, let's analyze the options: - Nm⁻¹: This represenRead more
Young’s modulus is defined as stress divided by strain, where:
Stress = Force / Area (unit: Nm⁻² or Pascal)
Strain is dimensionless, so Young’s modulus has the same unit as stress, i.e., Nm⁻², Pascal (Pa), or derived units like megapascals (MPa).
Now, let’s analyze the options:
See less– Nm⁻¹: This represents force per unit length, not a valid unit for Young’s modulus.
– Nm⁻²: Correct unit of Young’s modulus.
– dyne cm⁻²: A valid unit (CGS system).
– mega pascal: A legitimate unit (1 MPa = 10⁶ Pa).
What is the modulus of elasticity for a perfectly rigid body?
A perfectly rigid body has an infinite modulus of elasticity as it does not undergo deformation. This question related to Chapter 8 physics Class 11th NCERT. From the Chapter 8. Mechanical Properties of Solids. Give answer according to your understanding. For more please visit here: https://www.tiwaRead more
A perfectly rigid body has an infinite modulus of elasticity as it does not undergo deformation. This question related to Chapter 8 physics Class 11th NCERT. From the Chapter 8. Mechanical Properties of Solids. Give answer according to your understanding.
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The term liquid crystal refers to a state that is intermediate between
Liquid crystals are substances that exhibit properties intermediate between those of crystalline solids and amorphous liquids. They possess an ordered structure like solids but also flow like liquids.
Liquid crystals are substances that exhibit properties intermediate between those of crystalline solids and amorphous liquids. They possess an ordered structure like solids but also flow like liquids.
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