## Solutions of the Cambridge Problems, from 1800 to 1820, Volume 2 |

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### Common terms and phrases

abscissa according altitude angle axis base body centre of gravity chord circle co-ordinates common cone constant corresponding curve cylinder denote descending described determine diameter difference direction distance draw earth easily ellipse equal equation evidently expressed extremity feet fluid focus force given gives greatest Hence horizon hour inclination intersection joining known latitude length locus mean measured motion moving orbit origin parabola parallel passing plane position pressure problem projection Prove putting quantity question radius ratio respectively shew sides solid space sphere star straight line substituting supposing surface tangent triangle velocity vertex vertical volume weight whole

### Popular passages

Page 655 - ... 8 days. But on the evening of the sixth day, 100 men were killed in a sally, and afterwards the mortality increased to 10 daily. Supposing the stock of provisions unconsumed at the end of the sixth day to support 6 men for 61 days ; it is required to find how long it would support the garrison, and the number of men alive when the provisions were exhausted.

Page 652 - ... line and the extremities of the base have the same ratio which the other sides of the triangle have to one...

Page 658 - A ship, with a crew of 175 men, set sail with a supply of water sufficient to last to the end of the voyage ; but in 30 days the scurvy made its appearance, and carried off three men every day ; and at the same time a storm arose which protracted the voyage three weeks. They were, however, just enabled to arrive in port without any diminution in each man's daily allowance of water. Required the time of the passage, and the number of men alive when the vessel reached the harbor.

Page 695 - From the same demonstration it likewise follows that the arc which a body, uniformly revolving in a circle by means of a given centripetal force, describes in any time is a mean proportional between the diameter of the circle and the space which the same body falling by the same given force would descend through in the same given time.

Page 651 - In any right-angled triangle, the square which is described upon the side subtending the right angle, is equal to the squares described upon the sides which contain the right angle.

Page 653 - If a straight line stand at right angles to each of two straight lines at the point of their intersection, it shall also be at right angles to the plane which passes through them, that is, to the plane in which they are.

Page 650 - If a straight line be divided into two equal, and also into two unequal parts ; the squares on the two unequal parts are together double of the square on half the line, and of the square on the line between the points of section.

Page 693 - Upon comparing the observations with each other, it was discovered that in both the fore-mentioned stars, the apparent difference of declination from the maxima was always nearly proportional to the versed sine of the sun's distance from the equinoctial points. This was an inducement to think that the cause, whatever it was, had some relation to the sun's situation with respect to those points.

Page 713 - This is the same as saying that when a ray of light passes out of one medium into another, the...

Page 687 - Having given the radius of an arc of any colour in the secondary rainbow, find the ratio of the sine of incidence to the sine of refraction when rays of that colour pass out of air into water.