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The current through starter motor of the car is 210 A. If battery keeps 12 V across motor, what electric energy is delivered to starter in given time 10.0 s?
Two cars arrive at the railway crossing between 7:00 and 7:30 according to the uniform distribution. Crossing is closed between 7:20 and 7:25. Find probability that total waiting time is at least fo
If she sells business, funds will be invested at 8% compounded quarterly. (i) Determine future value if she holds onto business. (ii) What price must she insist on now if she sells business?
Assume sunlight shining vertical on water loses its intensity by the factor of half at 10 ft below water surface. At what depth will intensity be decreased by the factor 1/16 (essentially dark)?
Derive the equation which determines rate of change of concentration in time. Find how long worker should pour in salt to reach desired concentration.
The given table illustrates fast food items which are high in salt. Sketch the box and whisker plot for the data. Label three quartiles.
It is common in educational research when testing novel methods, to give the pretest before teaching new methods and the posttest after instruction.
The television producer wishes to sample viewer preferences of 4 age groups: teenagers from 13 to 18 years old: under 13 years old. Find number of people under 18 years old will be sampled?
The girl running at the constant speed of 1.4m/s in the straight line throw the ball directly upward at 4.7 m/s. How far she will travel before ball drops back into the hand?
Marylin drove the car from amarillo to dallas at the average rate of 55 miles per hour and returned over icy roads averaging only thirty miles per hour.
At most how long can train remain at each station if average speed for trip, comprising stops, is to be at least 36km/hr?
The consultant traveled eight hours to attend the meeting. Return trip took only seven hours as speed was three miles per hour faster. Determine consultant's speed each way?
The boat has the speed of 15 mph in still water. It travels downstream from Greentown, in three-fifths of an hour. Determine rate of current.
They pass each other in thirty minutes, and Brittani, headed for point B, arrives there in another twenty minutes. Find time that after brittani arrives at point B will Lea arrive at Point A?
Height (h) of bucket after t seconds is given by following formula: h=-16t^2+64. How long it will take for bucket to hit ground?
One number is six more than another number. Sum of numbers is one more than three times their difference. Determine the numbers?
Friend drove her home in the car traveling at 25 mi/hr. Lois took 1.5 hr longer to go to the friend's than to return home. How many hours it took Lois to ride to friend's house?
At 3:10P.M. skydiver jumps from the airplane at the altitude of 15,000 feet. At 3:10:26 at the altitude of 4200, skydiver opens parachute. Determine skydiver's average speed during 26-second free-fa
The passenger train's speed is 60 mi/h, and the freight train's speed is 40 mi/h. Passenger train travels same distance in 1.5 h less time than freight train. How long each train takes to make trip?
Local train heading for Westford at 60km/h and express train heading for Eastford at 80km/h pass each other at Centerville during heading in opposite directions along the straight roadbed.
Fifteen minutes later, Sandy left the home and walked at 8 km/h toward Sue's house. If Sue lives five km from Sandy, at what tme they met?
Write the equation for the problem which associates time and distance, where t= time Tory traveled on state highways.
Create the 90 % confidence interval with margin of error for proportion of all adults who are smokers? What must be minimum sample size to keep Margin of error under 1%?
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., State the importance of pastoral and forest products in the medieval economy