In terms of Kelvin value, the normal temperature of the human body is approximately 310.15 Kelvin (K). This is derived by adding 273.15 to the Celsius value of normal body temperature, which is approximately 37°C. Therefore, the normal body temperature ...
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The temperature at which the readings are the same on Celsius and Fahrenheit thermometers is -40°C. At this temperature, -40°C is equivalent to -40°F. This point is where the two temperature scales intersect, making it the only temperature where the ...
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.
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.
Absorption of ink by blotting paper involves capillary reaction phenomenon. Capillary action occurs due to the adhesive and cohesive forces between the liquid molecules and the fibers of the paper, causing the ink to be drawn upward. This phenomenon is ...
Action and reaction have the same magnitude and opposite directions. According to Newton’s third law of motion, for every action, there is an equal and opposite reaction. This principle applies to interactions between two objects, where the forces exerted on ...
The ball should be thrown at a 45° angle from the horizontal to cover the maximum horizontal distance. At this angle, the horizontal and vertical components of the initial velocity are equal, maximizing the projectile’s range.
Angstrom measures wavelength. It is a unit of length used to express the sizes of atoms, molecules, and the wavelengths of light and other electromagnetic radiation.
Before Newton, Varahamihir, an ancient Indian astronomer and mathematician, proposed that all objects gravitate towards the Earth. He lived during the 6th century CE and contributed significantly to the fields of astronomy and mathematics.
On heating an object, the speed of its molecules will increase. Heating adds thermal energy to the molecules, causing them to move faster and collide more frequently. This increase in molecular motion results in a rise in temperature and expansion ...