The force of Earth’s gravity acting on a body of mass 1 kg is calculated using the formula F = m x g, where g is the acceleration due to gravity (9.8 m/s²). Therefore, the force is 1 kg x ...
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On removing butter from milk, the density of milk increases. This is because butter is less dense than milk. When butter is removed, the remaining liquid is denser than the original mixture.
Shock absorbers are usually made of steel because its elasticity is high. High elasticity allows steel to absorb and dissipate energy efficiently, making it ideal for withstanding the repeated stress and strain experienced in shock absorption.
There is no atmosphere on the Moon because its escape velocity is less than the root mean square velocity of atoms. This means that gas molecules on the Moon can easily escape into space due to insufficient gravitational pull, resulting ...
One Horse Power (H.P) is equal to 746 watts. This conversion factor is used to measure the power output of engines and motors.
A runner runs for some distance before taking a long jump because running increases the inertia of his body, helping him cover more distance during the jump. This momentum gained from running aids in achieving greater distance in the jump.
Both stones reach the ground together. In the absence of air resistance, all objects fall at the same rate regardless of mass, as stated by the principle of universal gravitation. Therefore, the larger stone does not reach the ground before ...
Mercury has the lowest density among the listed liquids. With a density of approximately 13.6 g/cm³, mercury is denser than water, salty water, and petrol.
Bernoulli’s theorem is based on energy conservation. It states that in a flowing fluid, an increase in the fluid’s speed occurs simultaneously with a decrease in pressure or potential energy. This principle is fundamental in fluid dynamics and is used ...
An iron needle floats on the surface of water due to surface tension. Surface tension is the cohesive force between water molecules at the surface, which creates an upward force capable of supporting lightweight objects like the needle.