Skating on ice shows that on increasing the pressure, the melting point of ice decreases. The pressure applied by the skater’s weight lowers the melting point of the ice, causing it to briefly melt and form a thin layer of ...
Tiwari Academy Discussion Latest Questions
The wall below the dam is made thick because the pressure of the fluid increases with increasing depth. This thick wall is necessary to withstand the increased pressure exerted by the water against it as the depth increases.
Approximately 1/10 part of an iceberg floating in the sea remains above the surface of the sea. This is due to the difference in densities between ice and seawater, where the density of ice is about 90% that of seawater, ...
The reason for the floating of clouds in the atmosphere is density. Clouds consist of tiny water droplets or ice crystals that are less dense than the surrounding air. This lower density causes the clouds to float or remain suspended ...
A swimmer finds it easier to swim in seawater than in a river because the density of seawater is higher than that of ordinary water. The higher density provides more buoyant force, which helps the swimmer to float and swim ...
The density of water is maximum at 4 °C. At this temperature, water molecules are packed closely together due to hydrogen bonding, resulting in the highest density. Both higher and lower temperatures cause the density of water to decrease.
When a solid body is immersed in water, its weight decreases. This loss is equal to the weight of displaced water. According to Archimedes’ principle, the buoyant force acting on the body is equal to the weight of the displaced ...
An iron nail floats in mercury, whereas it sinks in water because the density of iron is more than that of water and less than that of mercury. Iron’s density is between that of water and mercury, allowing it to ...
When a ship sailing in a river reaches the sea, the level of the ship will fall slightly. This occurs because the density of seawater is higher than river water, causing a slight decrease in buoyant force and consequently a ...
It is easier to roll a wooden cylindrical barrel instead of pulling it because the friction force of rolling state is much less than the friction force of sliding state. Rolling reduces friction compared to sliding, making it easier to ...