The escape velocity of the Earth is 11.2 km/sec, corresponding to option [D]. Escape velocity is the minimum speed required for an object to overcome the gravitational pull of a celestial body and venture into space without falling back. For Earth, this velocity is approximately 11.2 km/sec at the sRead more
The escape velocity of the Earth is 11.2 km/sec, corresponding to option [D]. Escape velocity is the minimum speed required for an object to overcome the gravitational pull of a celestial body and venture into space without falling back. For Earth, this velocity is approximately 11.2 km/sec at the surface. Objects traveling at or above this speed can break free from Earth’s gravitational field and continue moving away into space indefinitely, assuming no other forces act upon them. The concept of escape velocity is crucial for space exploration, satellite launches, and understanding the dynamics of celestial bodies. It represents the boundary between orbits where objects remain in Earth’s gravitational influence and those where they can escape into interplanetary or interstellar space.
Conservation of energy, denoted by option [D], states that energy can neither be created nor destroyed; it can only change forms or be transferred from one object to another. This principle, based on the first law of thermodynamics, asserts that the total energy of an isolated system remains constanRead more
Conservation of energy, denoted by option [D], states that energy can neither be created nor destroyed; it can only change forms or be transferred from one object to another. This principle, based on the first law of thermodynamics, asserts that the total energy of an isolated system remains constant over time, regardless of any internal changes. While energy transformations occur within the system, the total energy content remains constant. This fundamental concept underpins many scientific principles and practical applications, from understanding the behavior of physical systems to engineering design and environmental studies. Conservation of energy provides a powerful framework for analyzing and predicting the behavior of complex systems, ensuring that energy is accounted for and properly managed in various contexts, from mechanical systems to chemical reactions to celestial phenomena.
The universal law of gravitation was propounded by Newton, denoted by option [A]. Sir Isaac Newton formulated this law in his seminal work "Philosophiæ Naturalis Principia Mathematica," published in 1687. This law describes the gravitational force between two objects, based on their masses and the dRead more
The universal law of gravitation was propounded by Newton, denoted by option [A]. Sir Isaac Newton formulated this law in his seminal work “Philosophiæ Naturalis Principia Mathematica,” published in 1687. This law describes the gravitational force between two objects, based on their masses and the distance between them. It is a cornerstone of classical mechanics and astrophysics, providing insights into celestial mechanics, planetary orbits, and the dynamics of objects in space. Newton’s law of gravitation states that every mass attracts every other mass with a force proportional to the product of their masses and inversely proportional to the square of the distance between their centers. This law revolutionized our understanding of the universe, laying the groundwork for further advancements in physics and astronomy.
Capillarity is not the only reason for the movement of water from the roots of the plant towards its foliage, as described by option [D]. While capillarity aids in water uptake by plants, other processes such as transpiration and root pressure also contribute significantly to the movement of water wRead more
Capillarity is not the only reason for the movement of water from the roots of the plant towards its foliage, as described by option [D]. While capillarity aids in water uptake by plants, other processes such as transpiration and root pressure also contribute significantly to the movement of water within the plant. Transpiration, the loss of water vapor from leaves, creates a negative pressure gradient that pulls water up from the roots. Root pressure, generated by osmotic processes in the roots, also helps push water upwards. Together, these mechanisms facilitate the movement of water through the plant’s vascular system, ensuring hydration and nutrient transport to all parts of the plant. Therefore, while capillarity plays a role in water absorption and movement, it is not the sole reason for water transport from the roots to the foliage in plants.
The reason a liquid rises to a higher height than water in a capillary tube is that the surface tension of the liquid is higher than that of water, corresponding to option [D]. This higher surface tension causes the liquid to be drawn up the capillary tube to a greater extent, overcoming gravitationRead more
The reason a liquid rises to a higher height than water in a capillary tube is that the surface tension of the liquid is higher than that of water, corresponding to option [D]. This higher surface tension causes the liquid to be drawn up the capillary tube to a greater extent, overcoming gravitational forces. It’s this stronger cohesive force within the liquid that enables it to climb higher against gravity within the narrow confines of the capillary tube. This phenomenon is governed by the principles of capillary action, where the surface tension of the liquid interacts with the tube’s surface to produce a rise or fall in the liquid level. Therefore, liquids with higher surface tension exhibit greater capillary rise, leading to the observation of a liquid rising to a higher height than water in a capillary tube when the liquid’s surface tension surpasses that of water.
The escape velocity of the Earth is
The escape velocity of the Earth is 11.2 km/sec, corresponding to option [D]. Escape velocity is the minimum speed required for an object to overcome the gravitational pull of a celestial body and venture into space without falling back. For Earth, this velocity is approximately 11.2 km/sec at the sRead more
The escape velocity of the Earth is 11.2 km/sec, corresponding to option [D]. Escape velocity is the minimum speed required for an object to overcome the gravitational pull of a celestial body and venture into space without falling back. For Earth, this velocity is approximately 11.2 km/sec at the surface. Objects traveling at or above this speed can break free from Earth’s gravitational field and continue moving away into space indefinitely, assuming no other forces act upon them. The concept of escape velocity is crucial for space exploration, satellite launches, and understanding the dynamics of celestial bodies. It represents the boundary between orbits where objects remain in Earth’s gravitational influence and those where they can escape into interplanetary or interstellar space.
See lessConservation of energy means that
Conservation of energy, denoted by option [D], states that energy can neither be created nor destroyed; it can only change forms or be transferred from one object to another. This principle, based on the first law of thermodynamics, asserts that the total energy of an isolated system remains constanRead more
Conservation of energy, denoted by option [D], states that energy can neither be created nor destroyed; it can only change forms or be transferred from one object to another. This principle, based on the first law of thermodynamics, asserts that the total energy of an isolated system remains constant over time, regardless of any internal changes. While energy transformations occur within the system, the total energy content remains constant. This fundamental concept underpins many scientific principles and practical applications, from understanding the behavior of physical systems to engineering design and environmental studies. Conservation of energy provides a powerful framework for analyzing and predicting the behavior of complex systems, ensuring that energy is accounted for and properly managed in various contexts, from mechanical systems to chemical reactions to celestial phenomena.
See lessWho propounded the universal law of gravitation?
The universal law of gravitation was propounded by Newton, denoted by option [A]. Sir Isaac Newton formulated this law in his seminal work "Philosophiæ Naturalis Principia Mathematica," published in 1687. This law describes the gravitational force between two objects, based on their masses and the dRead more
The universal law of gravitation was propounded by Newton, denoted by option [A]. Sir Isaac Newton formulated this law in his seminal work “Philosophiæ Naturalis Principia Mathematica,” published in 1687. This law describes the gravitational force between two objects, based on their masses and the distance between them. It is a cornerstone of classical mechanics and astrophysics, providing insights into celestial mechanics, planetary orbits, and the dynamics of objects in space. Newton’s law of gravitation states that every mass attracts every other mass with a force proportional to the product of their masses and inversely proportional to the square of the distance between their centers. This law revolutionized our understanding of the universe, laying the groundwork for further advancements in physics and astronomy.
See lessCapillarity is not the only reason for which one of the following?
Capillarity is not the only reason for the movement of water from the roots of the plant towards its foliage, as described by option [D]. While capillarity aids in water uptake by plants, other processes such as transpiration and root pressure also contribute significantly to the movement of water wRead more
Capillarity is not the only reason for the movement of water from the roots of the plant towards its foliage, as described by option [D]. While capillarity aids in water uptake by plants, other processes such as transpiration and root pressure also contribute significantly to the movement of water within the plant. Transpiration, the loss of water vapor from leaves, creates a negative pressure gradient that pulls water up from the roots. Root pressure, generated by osmotic processes in the roots, also helps push water upwards. Together, these mechanisms facilitate the movement of water through the plant’s vascular system, ensuring hydration and nutrient transport to all parts of the plant. Therefore, while capillarity plays a role in water absorption and movement, it is not the sole reason for water transport from the roots to the foliage in plants.
See lessA liquid rises to a higher height than water in a capillary tube, the reason for this is
The reason a liquid rises to a higher height than water in a capillary tube is that the surface tension of the liquid is higher than that of water, corresponding to option [D]. This higher surface tension causes the liquid to be drawn up the capillary tube to a greater extent, overcoming gravitationRead more
The reason a liquid rises to a higher height than water in a capillary tube is that the surface tension of the liquid is higher than that of water, corresponding to option [D]. This higher surface tension causes the liquid to be drawn up the capillary tube to a greater extent, overcoming gravitational forces. It’s this stronger cohesive force within the liquid that enables it to climb higher against gravity within the narrow confines of the capillary tube. This phenomenon is governed by the principles of capillary action, where the surface tension of the liquid interacts with the tube’s surface to produce a rise or fall in the liquid level. Therefore, liquids with higher surface tension exhibit greater capillary rise, leading to the observation of a liquid rising to a higher height than water in a capillary tube when the liquid’s surface tension surpasses that of water.
See less