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Organize a team-building activity for handball.
Split players into two teams and define a play area. The goal is to complete 10 consecutive passes without interception. Opposing players try to disrupt the sequence by intercepting the ball. If successful, possession switches. Encourage players to move continuously, find open spaces, and communicatRead more
Split players into two teams and define a play area. The goal is to complete 10 consecutive passes without interception. Opposing players try to disrupt the sequence by intercepting the ball. If successful, possession switches. Encourage players to move continuously, find open spaces, and communicate effectively. This activity improves teamwork, passing accuracy, and decision-making under pressure, making it a valuable exercise for strengthening on-field coordination and strategy.
See lessAcceleration due to gravity
The acceleration due to gravity varies from the poles to the equator, mainly due to two factors: Earth's rotation and its shape. Earth is not a perfect sphere; it is an oblate spheroid, meaning it is slightly flattened at the poles and bulging at the equator. Consequently, the distance from the centRead more
The acceleration due to gravity varies from the poles to the equator, mainly due to two factors: Earth’s rotation and its shape. Earth is not a perfect sphere; it is an oblate spheroid, meaning it is slightly flattened at the poles and bulging at the equator. Consequently, the distance from the center of the Earth to the surface is greater at the equator than at the poles.
The force of gravity is strongest at the poles where the Earth’s rotation is least effective. This is because the gravitational force varies directly with the mass of the Earth and inversely with the square of the distance from the center of the Earth. Conversely, at the equator, the centrifugal force created by the Earth’s rotation opposes the force of gravity, thus reducing the effective acceleration due to gravity. This centrifugal force is greatest at the equator because the linear speed due to rotation is the highest at the equator.
Because of this, the acceleration due to gravity decreases from about 9.83 m/s² at the poles to about 9.78 m/s² at the equator. This variation is important in many applications such as navigation, satellite positioning, and understanding the behavior of objects in different gravitational fields.
See lessThe mass of moon is 1% mass of earth. The ratio of gravitational pull of earth on moon and that of moon on earth will be
The gravitational interaction between two bodies, such as the Earth and the Moon, is described by Newton's law of universal gravitation. According to this principle, every mass exerts a gravitational force on every other mass, and this force is proportional to the product of their masses and inverseRead more
The gravitational interaction between two bodies, such as the Earth and the Moon, is described by Newton’s law of universal gravitation. According to this principle, every mass exerts a gravitational force on every other mass, and this force is proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
In the case of the Earth and the Moon, even though the Moon has only about 1% of the Earth’s mass, the gravitational pull that the Earth exerts on the Moon and the gravitational pull that the Moon exerts on the Earth are equal in magnitude. This equality is a direct consequence of Newton’s third law of motion, which states that for every action, there is an equal and opposite reaction. Therefore, the gravitational force that the Earth exerts on the Moon is matched by the gravitational force that the Moon exerts on the Earth, leading to a ratio of 1:1.
This relationship holds true regardless of the difference in masses. While the forces are equal, their effects are different due to the significant difference in mass. The Earth, being much more massive, has a stronger gravitational influence, resulting in the Moon’s orbit around it. However, the underlying principle remains that the gravitational forces between the two bodies are equal.
See lessWhy is the use of a.c. voltatage preferred over d.c. voltage? give two reasons
The use of alternating current (A.C.) voltage is preferred over direct current (D.C.) voltage for two main reasons: Easy Voltage Transformation: A.C. voltage can easily be stepped up or stepped down using transformers, making it efficient for long-distance transmission. Simpler Generation and DistriRead more
The use of alternating current (A.C.) voltage is preferred over direct current (D.C.) voltage for two main reasons:
Easy Voltage Transformation: A.C. voltage can easily be stepped up or stepped down using transformers, making it efficient for long-distance transmission.
Simpler Generation and Distribution: A.C. generators are simpler and cheaper to design and maintain compared to D.C. generators, and A.C. can be easily converted to various forms of energy for different applications.
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See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-7/
Mention the two characteristic properties of the material suitable for making core of a transformer.
Two characteristic properties of materials suitable for making the core of a transformer are: High Magnetic Permeability: The material should have high magnetic permeability to efficiently conduct magnetic flux and reduce energy losses. Low Hysteresis Loss: The material should exhibit low hysteresisRead more
Two characteristic properties of materials suitable for making the core of a transformer are:
High Magnetic Permeability: The material should have high magnetic permeability to efficiently conduct magnetic flux and reduce energy losses.
See lessLow Hysteresis Loss: The material should exhibit low hysteresis loss, meaning minimal energy is wasted when the magnetic field alternates, ensuring efficient operation of the transformer.