Answer:
70.5 mph
Explanation:
A passenger jet travels from Los Angeles to Bombay, India, in 22h.
The return flight takes 17 h.
The difference in flight times is caused by winds over the Pacific Ocean that
blow primarily from west to east.
If the jet's average speed in still air is 550 mi/h what is the average speed
of the wind during the round trip flight? Round to the nearest mile per hour.
Is your answer reasonable?
:
Let w = speed of the wind
:
Write a distance equation (dist is the same both ways
17(550+w) = 22(550-w)
9350 + 17w = 12100 - 22w
17w + 22w = 12100 - 9350
39w = 2750
W = 2750/39
w = 70.5 mph seems very reasonable
:
Confirming if the solution by finding the distances using these value
17(550+70.5) = 10549 mi
22(550-70.5) = 10549 mi; confirms our solution of w = 70.5 mph
The FIRST statement on the list is the definition of momentum, so that's the one that must be true.
Answer:
I would say the net force acting on the car is in the opposite direction of the car's motion is correct
Answer:
hey want you to separate the energy’s and put them in the categories they go in like why are They different what is chemically different about them? Etc.why do they act differently.. do they act the same in some ways? Think about that
Explanation:
Considering their pKa, we can affirm that PH₃ is a stronger acid than NH₃.
We want to compare the strength of different acids. To do so, we need to compare their pKa.
<h3>What is the pKa?</h3>
The pKa is the negative base 10 logarithm of the acid dissociation constant, Ka.
The lower the pKa, the stronger the acid.
Which comparison is correct?
- HF is a stronger acid than HCI. FALSE. The pKa of HF is 3.1. and the pKa of HCl is 6.0.
- H₂S is a stronger acid than HCI. FALSE. The pKa₁ of H₂S is 7.04. and the pKa of HCl is 6.0.
- PH₃ is a stronger acid than NH₃. TRUE. The pKa of PH₃ is -5.5 and the pKa of NH₃ is 9.9.
- NH₃ is a stronger acid than HF. FALSE. The pKa of NH₃ is 9.9 and the pKa of HF is 3.1.
Considering their pKa, we can affirm that PH₃ is a stronger acid than NH₃.
Learn more about pKa here: brainly.com/question/13608171
