Oil spreads on the surface of water because the surface tension of oil is less than that of water. This causes oil molecules to spread out more easily, forming a thin layer on the water’s surface. This phenomenon occurs due ...
Tiwari Academy Discussion Latest Questions
If the diameter of the capillary is doubled, the height of the water surface rising in it remains the same. This is because the height to which a liquid rises in a capillary tube is inversely proportional to the diameter ...
Astronauts cannot stand straight in space because there is no gravity. In the absence of gravitational pull, there is no force to hold them upright. Instead, they experience microgravity, causing them to float and requiring them to use restraints or ...
When soap is dissolved in water, the surface tension decreases. Soap molecules contain both hydrophilic and hydrophobic parts. The hydrophobic tails disrupt the cohesive forces between water molecules at the surface, reducing surface tension.
Since the car maintains a constant velocity, there’s no additional force acting on the ball while it’s airborne. Therefore, the ball travels vertically upward after being thrown and then falls straight back down relative to the car’s frame of reference. ...
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 ...
Pascal is the unit of pressure. Named after the French mathematician and physicist Blaise Pascal, it measures force applied perpendicular to an object’s surface per unit area. Pascal is commonly used in various fields, including physics, engineering, and meteorology, to ...
1 kg/cm² pressure is equivalent to 10.0 bar. Bar is a unit of pressure equal to 100,000 pascals, and 1 kg/cm² is equivalent to 10,000 pascals. Therefore, 1 kg/cm² pressure is equal to 10.0 bar.
Cusec measures the flow of water. It quantifies the volume of water passing a specific point in a watercourse per unit of time. Cusec, short for cubic feet per second, is commonly used in hydrology, agriculture, engineering, and environmental monitoring ...
A geostationary satellite moves continuously in its orbit due to the gravity applied by the Earth on the satellite. Gravity keeps the satellite in orbit, and the centrifugal force generated by its motion balances this gravitational pull, allowing the satellite ...