Chapter 2, Problem 89P

A projectile is aimed to hit a mark in a horizontal plane, but falls short by 20m, when the angle of projection is 20°. However, when projected at 45°, it overshoots by 40m. Determine the angle of projection required to hit the target precisely? Also find the actual distance of the target. ANS: X = a =

If the direction cosines for the satellite antenna shown are to be cosex = 0.286, cosey= 0.429, and cos0₂= 0.857, determine the values of angles 8h and ev. X The value of eh is The value of vis Z Oh y °. (Round the final answer to one decimal place.) °. (Round the final answer to the nearest whole number.)

The measured distance on the ground between two points is 6.85 km. If the corresponding distance between the same points on the map is 13.70 m, the scale of the map is O 1:50000 O 1:500000 O 1:5000 O 1:50 O 1:500

Find T1 and T2

Find the magnitude of the third leg of the journey. Find the direction of the third leg of the journey (East of North)

15-1. A 100-ft grid is located over an area that measures 800 ft in the north-south direction and 800 ft in the east-west direction. The southwesterly corner is designated A-1 and the southeasterly corner is designated I-1. The northwesterly corner is designated A-9 and the northeasterly corner is designated I-9. Elevations are obtained at the grid points using a total station instrument, rounded off to the nearest foot. These are tabulated as follows: 375 372 366 360 354 350 340 322 302 312 365 364 8 372 372 370 368 362 361 339 7 366 365 365 366. 362 361 347 319 359 328 328 6. 363 353 350 360 362 350 347 361 340 335 343 352 350 338 334 4 360 344 329 328 337 339 325 321 321 3 360 343 320 317 318 318 313 312 312 308 302 303 323 326 2 358 343 316 310 303 291 340 B 1 353 318 310 303 297 292 A C D F G H Plot a grid to a scale of 1 in. = 200 ft and draw in 10-ft contour lines.

Solve for the indicated value, and graph the situation showing the solution point. The formula for measuring sound intensity in decibels D is defined by the equation D = 10 log (1) using the common (base 10) logarithm where I is the intensity of the sound in watts per square meter and Io = 10-12 is the lowest level of sound that the average person can hear. How many decibels are emitted from a jet plane with a sound intensity of 8.7. 102 watts per square meter? Round your answer to three decimal places. The jet plane emits Number decibels at 8.7. 102 watts per square meter. Select the correct graph of the situation showing the solution point. 200 D 150 100- 50 400 800 1200 1600 2000 400 800 1200 1600 2000 O O 0 200D 150- 100 50 0 200- Subr

Differentiate 5 sinx cos x A. 5((cos x)² + (sin x)²) В. 5 cos x sin x C. 5((cos x)? - (sin x)²) D. -5 cos x sin x

5. According to the given 2 views, try to make the front full sectional view (7') and the left-side half sectional view A-A (8'). (only 2 required views) A-A | A