Water is flowing from a major broken water main at the intersection of two streets. the resulting puddle of water is circular and the radius r of the puddle is given by the equation r = 6t feet, where t represents time in seconds elapsed since the the main broke. (a) when the main broke, a runner was located 7 miles from the intersection. the runner continues toward the intersection at the constant speed of 16 feet per second. when will the runner's feet get wet? 28 min (b) suppose, instead, that when the main broke, the runner was 7 miles east, and 5000 feet north of the intersection. the runner runs due west at 16 feet per second. when will the runner's feet get wet? (round your answer to one decimal place.) 29.0 min grade this hide answer try again

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

1134567 a jet with mass m = 1.1 ă— 105 kg jet accelerates down the runway for takeoff at 2 m/s2. 1) what is the net horizontal force on the airplane as it accelerates for takeoff? 2.2*10^5 n your submissions: 2.2*10^5 computed value: 220000submitted: saturday, january 26 at 2: 41 pm feedback: correct! 2) what is the net vertical force on the airplane as it accelerates for takeoff? 0 n your submissions: 0 computed value: 0submitted: saturday, january 26 at 2: 41 pm feedback: correct! 3) once off the ground, the plane climbs upward for 20 seconds. during this time, the vertical speed increases from zero to 21 m/s, while the horizontal speed increases from 80 m/s to 95 m/s. what is the net horizontal force on the airplane as it climbs upward? n 4) what is the net vertical force on the airplane as it climbs upward? n 5) after reaching cruising altitude, the plane levels off, keeping the horizontal speed constant, but smoothly reducing the vertical speed to zero, in 13 seconds. what is the net horizontal force on the airplane as it levels off? n 6) what is the net vertical force on the airplane as it levels off?

An object is 10 cm from the mirror, its height is 1 cm and the focal length is 5 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1 -1 +10 -10