Let the time for the 1st tractor alone be A, and the time for the 2nd tractor alone be B. Then in 1 day, the 1st tractor does 1/A, and the 2nd does 1/B. Together, both complete 2/3 of the field in 4 days:
(1/A + 1/B)(4 days) = 2/3
1/A + 1/B = 1/6
If the 1st tractor can finish in 5 days less than the 2nd:
A = B - 5
Substituting:
1/(B - 5) + 1/B = 1/6
(2B - 5)/B(B - 5) = 1/6
6(2B - 5) = B(B - 5)
12B - 30 = B^2 - 5B
B^2 - 17B - 30 = 0
(B - 15)(B - 2) = 0
B = 15 (B = 2 is extraneous since A would then be -3)
A = B - 5 = 10
Therefore, the 1st tractor would take 10 days, and the 2nd would take 15.
The answer is false because kinetic energy contains motion!
Answer:
The effect of the angle between force and displacement on work.
Explanation:
When the angle between the force and displacement = zero , The work done is maximum when the direction of force is the same as the direction of displacement , such as a person pulling an object through a certain distance .
Hope that this helps you and have a great day :)
Answer:
C. difference between the highest and lowest frequencies that can be accommodated on a single channel.
Explanation:
Bandwidth is the range of the band of frequencies. It is the amount of the data which can be transmitted over a wide range of frequency in the fixed time.
Bandwidth is difference between highest and lowest frequencies in the continuous band of the frequencies which can be accommodated on the single channel. It is measured in hertz.
<u>Correct answer - C. difference between the highest and lowest frequencies that can be accommodated on a single channel.</u>
Answer:
D
Explanation:
because it is the only one that has something to do with heat keyword would be boiling