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friction, force that resists the sliding or rolling of one solid object over another. Examples of friction in our daily life Driving of a a vehicle on a surface. Applying brakes to stop a moving vehicle. Skating. Walking on the road.

Tire treads provide your tires the ability to grip the road safely enhancing proper traction. Helps your vehicle to be able to accelerate smoothly and as well to be able to brake more quickly.

A body sliding down a plane inclined at 30o to the horizontal, Has coefficient of friction = tan 30º or \(\frac{1}{\sqrt3}\)

The viscosity of a material is affected by temperature, pressure, nature of fluid, velocity gradient

elastic potential energy[Ee] = \(\frac{1}{2} ke^2\).

Examples of scalar quantities are mass, energy, distance, charge, volume, time, speed, and the magnitude of physical vectors in general.

Internal energy is affected by factors such as pressure, volume, and temperature. All of the variables in this list are state functions. Mass, volume, pressure, temperature, density, and entropy are all examples of state functions.

The model, called the kinetic theory of gases, assumes that the molecules are very small relative to the distance between molecules. The molecules are in constant, random motion and frequently collide with each other and with the walls of any container.

pressure = p, depth/height = h, density = d, gravity = g p = hdg \(\frac{p}{dg} = h\) \(\frac{9100}{10 * 2000} = h\) 0.455m

The graph of pressure (P) against the reciprocal of the volume (I/V) is a straight line passing through the origin.

The height of the mercury column serves as an indicator of atmospheric pressure. At sea level and at a temperature of 0^\circ Celsius (C), the height of the mercury column is approximately 30 inches, or 76 centimeters. This represents a pressure of approximately 14.7 psia. The 30-inch column is used as a reference standard.

A sea breeze describes a wind that blows from the ocean inland towards land. This breeze occurs most often in the spring and summer months because of the greater temperature differences between the ocean and nearby land, particularly in the afternoon when the land is at maximum heating from the sun.

quantity of heat = mass * Specific latent heat → 20 * 336 quantity of heat = 6720j or 6.72 x 10\(^{3}\)J

The vapor pressure of any substance increases non-linearly with temperature, often described by the Clausius–Clapeyron relation. As the temperature of a liquid or solid increases its vapor pressure also increases. Conversely, vapor pressure decreases as the temperature decreases. i.e. vapor pressure is directly proportional to temperature

A person would weigh six times less on the moon than they do on Earth. OR A person would weigh six times more on the earth than they do on moon. \(\frac{1}{6} of x\) = 6.0N on the moon x = 6 * 6 = 36