Physics PP1 Notes • Dec 3rd 2022 • 1088
When an inflated balloon is left out in the sun, it increases in volume without extra air being pumped in. If the balloon is taken out of the sun and placed in a cold room, the volume reduces without any air escaping. Out in the sun, the temperature of air in the balloon rises and the gas expands leading to an increase in volume. In the cold room, the temperature of the air in the balloon reduces and consequently the air contracts hence volume reduces. This implies that when temperature of air (gas) increases, the volume of the gas increases and vice versa. For this to happen, the pressure and mass of the gas must be kept constant. Hence;...read more.
Past Papers • Dec 2nd 2022 • 651
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Physics PP1 Notes • Dec 2nd 2022 • 904
Circular motion refers to motion along a curved path e.g., a roundabout. Suppose an object moving along a circular path of radius r covers a distance s represented by the arclength AB (a section of the circumference of a circular path of a circle is referred to as arclength), sweeping an angle about the center O....read more.
Physics PP1 Notes • Nov 30th 2022 • 2384
Objects float if they are less dense than, or of equal density with, the fluids (liquids and gases) they occupy. For example, while steel is denser than water, a steel ship can be made to float by introducing air-filled chambers which reduce the density of the ship relative to that of water. Floating bodies usually have part (or all) of their bodies in the liquid and as a result experience an upward force called upthrust (or buoyant force). Consider for instance an object of mass m, cross-sectional area A and height h fully submerged in a liquid of density ρ....read more.
Physics PP1 Notes • Nov 27th 2022 • 918
Pressure refers to the force a body exerts perpendicularly per unit surface area i.e....read more.
Past Papers • Nov 27th 2022 • 388
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Past Papers • Nov 27th 2022 • 515
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Past Papers • Nov 27th 2022 • 1623
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Past Papers • Nov 27th 2022 • 367
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Past Papers • Nov 25th 2022 • 421
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Past Papers • Nov 16th 2022 • 1500
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Physics PP1 Notes • Nov 9th 2022 • 1234
When an object moves along a line, it is said to undergo linear motion. If it moves along a circular path or a bend, it is said to undergo circular or rotational motion. If the object moves to-and-fro about a mean position, it is said to undergo vibratory or oscillatory motion. ...read more.
