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The 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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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.
The radii of circular orbits of two satellites A and B of the earth are 4R and R, respectively. If the speed of satellite A is 3 V, the speed of satellite B will be
To understand the relationship between the speeds of two satellites in circular orbits around the Earth, we need to consider their orbital radii. In the given problem, satellite A orbits at radius 4R and travels at a speed of 3V, whereas satellite B orbits at radius R. The speed of a satellite in aRead more
To understand the relationship between the speeds of two satellites in circular orbits around the Earth, we need to consider their orbital radii. In the given problem, satellite A orbits at radius 4R and travels at a speed of 3V, whereas satellite B orbits at radius R.
The speed of a satellite in a circular orbit is dependent on the gravitational pull of the Earth and the radius of its orbit. In general, satellites closer to the Earth have a stronger gravitational force and therefore move at higher speeds. On the other hand, satellites that are farther away have slower speeds.
In this case, we know that satellite B has a radius of R and is much nearer the Earth than satellite A that orbits at 4R. We therefore see that satellite A was moving at 3V, so this immediately tells us how to compute the speed of the motion of satellite B since, having a smaller orbit radius, it will also be orbiting faster. Thus, the speed of satellite B is calculated to be 6V, which is twice the speed of satellite A. This shows the relationship between orbital radius and speed, which indicates that closer satellites must travel faster to maintain their orbits.
See lessWrite any two factory responsible for energy losses in actual transformers.
Two factors responsible for energy losses in actual transformers are: Core Losses: Due to hysteresis and eddy currents in the core material, resulting in heat generation. Copper Losses: Caused by the resistance of the windings, which generates heat when current flows through them. For more visit herRead more
Two factors responsible for energy losses in actual transformers are:
Core Losses: Due to hysteresis and eddy currents in the core material, resulting in heat generation.
Copper Losses: Caused by the resistance of the windings, which generates heat when current flows through them.
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See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-7/