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What should be the orientation of a magnetic dipole in a uniform field so that its potential energy is minimum (or the dipole is in stable equilibrium)?
The potential energy of a magnetic dipole in a uniform magnetic field is minimum (stable equilibrium) when the dipole aligns parallel to the field, with its magnetic moment (m) pointing in the same direction as the field (B). For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-1Read more
The potential energy of a magnetic dipole in a uniform magnetic field is minimum (stable equilibrium) when the dipole aligns parallel to the field, with its magnetic moment (m) pointing in the same direction as the field (B).
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See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-5/
If the earth loses its gravity, then for a body
If the Earth were to lose its gravity, then a body near the Earth's surface would face drastic and immediate consequences. Gravity is the force that pulls objects toward the center of the Earth, keeping them grounded. Without this force, a body would no longer experience weight and would enter a staRead more
If the Earth were to lose its gravity, then a body near the Earth’s surface would face drastic and immediate consequences. Gravity is the force that pulls objects toward the center of the Earth, keeping them grounded. Without this force, a body would no longer experience weight and would enter a state of free fall.
In this scenario, everything ranging from individuals, houses, and other moving vehicles would start levitating in space and going off the Earth’s crust. This would be caused by a complete absence of gravity force. There is no pull to keep anchored any objects on the earth surface. Anything in motion will continue flowing without being halted by forces like gravity because it never acted in a pulling direction during the previous instance.
Moreover, it would have devastating consequences on the Earth’s atmosphere because gravity holds it there, and without it, air would dissipate into space, and people as well as other living things cannot breathe. Loss of gravity will affect the structural integrity of buildings and other structures leading to possible catastrophic failure.
In a nutshell, if Earth lost its gravity, all bodies would float into space, and life on this earth would be altered so much that it would never be the same, rendering the environment uninhabitable.
See lessIf the mass of earth is 80 times of that of moon and its diameter is double that of moon and g on earth is 9.8 m / sec², then the value of g on moon is
The acceleration due to gravity is denoted by g , which on Earth comes out to be about 9.8 m/s². It indicates the strength of the pulling force that the Earth exerted upon the objects resting on it due to mass and radius. It pulls all these objects towards the center due to gravitational force, wherRead more
The acceleration due to gravity is denoted by g , which on Earth comes out to be about 9.8 m/s². It indicates the strength of the pulling force that the Earth exerted upon the objects resting on it due to mass and radius. It pulls all these objects towards the center due to gravitational force, where this gravitational force is said to provide weight to them.
When we think of the Moon, the gravitational acceleration is much lower than that of Earth. This is what is called g’ . The Moon’s mass is approximately 1/80th that of Earth, and its radius is about half that of Earth. Thus, the gravitational force felt on the Moon is much weaker.
From calculations of gravitational acceleration on the Moon, it was determined that this acceleration is around 0.49 m/s². This smaller gravitational pull impacts the behavior of objects on the Moon’s surface greatly. For instance, if a person weighed 100 kg on Earth, then he or she would weigh about 6.1 kg on the Moon. This is because the movements are easier, and it is possible to jump higher because the gravitational force is less. This difference in gravity serves to play a crucial role in many scientific and engineering applications pertinent to lunar exploration and habitation.
For earth,
g = GM/R² = 9.8 ms⁻²
For moon,
See lessg’ = (G(M/80))/(R/2)² = 1 GM/20 R²
= 1/20 x 9.8 = 0.49 ms⁻²
Explain why the reactance offered by a capacitor decreases with increasing frequency of an alternating voltage.
The reactance offered by a capacitor decreases with increasing frequency because reactance (XC) is inversely proportional to the frequency of the alternating voltage, as given by the formula XC = 1/2πfC, where f is the frequency and C is the capacitance. As the frequency increases, the rate of changRead more
The reactance offered by a capacitor decreases with increasing frequency because reactance (XC) is inversely proportional to the frequency of the alternating voltage, as given by the formula XC = 1/2πfC, where f is the frequency and C is the capacitance. As the frequency increases, the rate of change of voltage across the capacitor becomes faster, allowing it to charge and discharge more rapidly, reducing the opposition to current flow.
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See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-7/
What are the key techniques for maintaining balance while performing a pole dive?
Maintaining balance during a pole dive requires planting the lead foot firmly near the pole and keeping the body low to the ground. The free arm should be used for stability and control, while the torso generates momentum for the dive. Controlled movements and focused attention on the target help prRead more
Maintaining balance during a pole dive requires planting the lead foot firmly near the pole and keeping the body low to the ground. The free arm should be used for stability and control, while the torso generates momentum for the dive. Controlled movements and focused attention on the target help prevent slips or loss of balance. Practicing these techniques consistently refines the skill, making players more confident and effective during pole dives in matches.
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