Answer:
1/Re=1/R1 +1/R2= 2x1/R1=2/R1=2/R2=2/50=1/25
1/Re=1/25, so the answer is Re= 25
the answer is A. 25.0
Answer:
A object in rest is an object that is not moving or a object that is not moving. A object in motion is a object that is in motion or moving.
Answer is D.
Speed:
Use relative speed to simplify the situation. Since the trains are moving in opposite directions, you can add the speeds and pretend the first train is stationary (moving at 0m/s) and the second train is moving at 50m/s.
Distance:
The front of the second train needs to travel 120m to get from the front to the back of the first train. When the front of the second train is at the back of the first train, the back of the second train is still 10m in front of the first train. The back therefore has to travel 130m to clear the first train. The total distance over which the trains are overlapping in this scenario is therefore 120 + 130 = 250m.
You have speed and you have distance so now just calculate time:
v = d / t
50 = 250 / t
t = 5s
<span>The amplitude because that controls the height of the wave. Correct answer: Amplitude.</span>
In order to start an essay, you would have to write an introduction, say something that will catch the audiences eyes. Ask a question, have a scenario, add some interesting things. Like a fun fact! Don’t forget to state your prompt in your introduction and you will get finish in no time. Good luck!
Best,
OneBrainlyOne :)