Engineering Answers

for the function v = 12 sin 40, calcualte the

For the water shooting out of the pipe and nozzle under the conditions shown

in figure below, find the height, h about the nozzle to which the water jet will

shoot. Assume negligible head loss.

nozzle

diameter=0.1m

point A

dia=0.2m

PA=55kPa

Find the centroid of the solid generated if the region bounded by y = 2- x^2, x=0, and y=0 is revolved about the y-axis.

Find the area between the curves y^2 - y + x = 0 and y^2 = x + 3.

3.9. A hunter desires to go to a point northeast but because of a canyon

he goes ½ mile due east and then turns left and travels ¾ mile in a straight

direction in degrees did he travel in going the ¾ mile?

3-7. A stream has parallel banks and ie 1000 ft across. A boat has traveled

500 it in a straight line making 30° with the bank. At this instant find the distance the boat has gone parallel to the bank and the shortest distance to

the opposite bank.

3-5. A vector is 4 in. long and has a direction-sense of 60°.

(a) Resolve

the vector into horizontal and vertical components,

(b) Find the components

of this vector on lines making 15° and 75° with the horizontal. (c) Find the

components of this vector along and perpendicular to a line making 30° with

the horizontal,

3-3.

Given five vectors whose lengths and direction-senses are as follows:

Ac, is 1.5 in. long and 90°; Aa, is 1.25 in, long and 315°; Aay is 2 in. long and

0°; AQ, is 1.25 in. long and 225°; Ad, is 1.5 in. long and 45°. Find the vector

sum of the first four, and subtract Ad, from this resultant vector.