The water remains cold in the pitcher due to the process of evaporation. As water evaporates from the surface of the pitcher, it absorbs heat energy from the surroundings, including the remaining water, cooling it down.
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The synchronizing satellite rotates around the Earth in a West to East direction. This rotation synchronizes with the Earth’s rotation, facilitating stable positioning relative to a point on the Earth’s surface. This alignment is essential for functions such as communication ...
The function of the ball bearing in the wheel is to convert static friction into kinetic friction. This conversion allows for smoother rotation by reducing resistance between moving parts. Ball bearings facilitate efficient motion and are crucial components in various ...
The water level remains the same when the ice cube melts. This is because a floating object displaces an amount of water equal to its own weight. Since water expands when it freezes, the volume of the melted ice cube ...
In a state of weightlessness, the shape of a candle flame will be spherical. Without the influence of gravity, convection currents do not form, causing the flame to become spherical as it is no longer pulled upwards. This phenomenon is ...
The liquid rises to a higher height than water in a capillary tube because the surface tension of the liquid is higher than that of water. This stronger surface tension pulls the liquid upward, resulting in a greater capillary rise ...
The movement of water from the roots of the plant towards its foliage is not solely due to capillarity. While capillarity contributes to water uptake by plants, other processes like transpiration and root pressure also play significant roles in the ...
The universal law of gravitation was propounded by Newton. Newton formulated this law in his work “Philosophiæ Naturalis Principia Mathematica” published in 1687. It describes the gravitational force between two objects and is a fundamental principle in classical mechanics and ...
Conservation of energy means 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 ...
The escape velocity of the Earth is 11.2 km/sec. Escape velocity is the minimum speed an object needs to escape the gravitational pull of a celestial body. For Earth, this velocity is approximately 11.2 km/sec, enabling objects to overcome Earth’s ...