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\(\frac{10.5-0}{30-0}\) = \(\frac{c-0}{100-0}\) \(\frac{10.5}{30}\) = \(\frac{c}{100}\) cross multiply: 10.5 * 100 = 30c 35.0 ºC = c

Radiation is energy that comes from a source and travels through space and may be able to penetrate various materials. Light, radio, and microwaves are good examples

When water is heated, the density rises and falls steadily, remember the anomalous expansion of water.

volumetric expansion (γ) = 3x Linear expansion

Specific latent heat of fusion of a substance is the quantity of heat required to convert the unit mass of the substance from the solid to the liquid state without change in temperature.

Acceleration[a] = \(\frac{[forward - resistive]force}{mass}\) a = \(\frac{1240-800}{1220}\) → \(\frac{440-800}{1220}\) a = 0.36m/s\(^2\), v = 4m/s, s = ? Second equation of motion: s is distance u is initial velocity v is final velocity a is acceleration v\(^2\) = u\(^2\) + 2as 4\(^2\) = 0\(^2\) + 2 * 0.36 * s 16 = 0.72s 22.2m = s

Joule as the unit of work done or energy used. Force = mass \times acceleration Work = Force \times Distance Work = mass x acceleration x distance Joule = kg \times \(\frac{m}{s^2}\) \times m → kg m\(^2\) s\(^{-2}\)

where force = f, mass = m, acceleration = a, velocity = v, time = t Force = m * a → m * \(\frac{\Deltav}{t}\) Power = f * v P = m * \(\frac{v}{t}\) * v = m * \(\frac{v^2}{t}\) p = \(\frac{1600 * 25^2}{20}\) p = 50,000 or 50 KW

VR = 5:1 or 5 Load = 20kg or 200N MA = \(\frac{200}{E}\) Efficiency% = \(\frac{MA}{VR} * 100\) 100% = \(\frac{200}{5E} * 100\) 5E = 200 E = 40

Examples of first class levers are pliers, scissors, a crow bar, a claw hammer, a see-saw and a weighing balance. A wheelbarrow, a bottle opener, and an oar are examples of second class levers

Mathematically; S = vt + \(\frac{1}{2}\) at\(^2\) : S ∝ t\(^2\)

v = ?, u = 0, a = 10, s = 30 V² = U²+2as V² = 0 + 2 * 10 * 30 V² = 0 + 600 V = \sqrt600 V = 24.5m/s

S = ut + \(\frac{1}{2}\)at\(^2\) 40 = 0 x 10 + \(\frac{1}{2}\)a x 10\(^2\) 50a = 40 a = \(\frac{40}{50}\) = 0.8m/s\(^2\)

A body is in neutral equilibrium when, upon receiving a slight displacement, it tends to come to rest in its new position, e.g., a ball rolling on a horizontal surface, or a cone resting on its curved surface. Ball R: Positioned in a trough between two crests. If displaced slightly, it will move to a new position and remain there, showing it is in neutral equilibrium

Hooke's Law states that the extension of a spring is proportional to the load that is applied to it. A variety of materials obey this law as long as the load does not exceed the material's elastic limit. Archimede's Principle states that a body immersed in a fluid experiences an upthrust equal to the weight of the fluid displaced, and this is fundamental to the equilibrium of a body floating in still water. When a body floats in a liquid, the weight of the liquid displaced by its immersed part is equal to the total weight of the body. This is the law of floatation. The Principle of Moments states that when a body is balanced, the total clockwise moment about a point equals the total anticlockwise moment about the same point.