Answer:
For the first situation, we first need to find the mass of the second train car.
In order to do that, we apply the conservation of the amount of movement:
and we have as a result:
m2 = 289.6875
For the second situation, also we will apply the conservation of the amount of movement:
and we have as a result:
V = 2.64 (it is moving to the right)
Answer:
Exercise helps people lose weight and lower the risk of some diseases. Exercising regularly lowers a person's risk of developing some diseases, including obesity, type 2 diabetes, and high blood pressure. Exercise also can help keep your body at a healthy weight. Exercise can help a person age well.
The correct option is: (c) They remain in Phase
Two waves <span>are </span>coherent if the following three conditions are met:
1) They<span> have </span><span>the same frequency.
2) They have the same waveform.
3) They remain in phase.
Hence the correct option is C.</span>
Answer:
180m to the east
Explanation:
Displacement is the distance traveled in a specific direction. It is a vector quantity with both magnitude and direction. Therefore, the start and finish position is very paramount.
point A runs 150m east,
70m west
100m east
150m
--------------------------------------------------------→
70m
←---------------------
100m
-----------------------------------→
The displacement of the athlete = 150 - 80 + 100 = 180m to the east
A. Chemical energy is formed when chemical bonds are broken.
