Answer:
the answer to the question is calcium
Answer:
If a vertical line extending down from an object's CG extends outside its area of support, the object will topple
Explanation:
We can understand better this situation using a diagram with the forces acting on it.
In the attached image we can see that when the gravity center is bouncing outside from the area of the pedestal, the object will be out of balance and will fall.
Answer:
Ft = 3650 N
Explanation:
The car exerts a force on the truck and truck has a friction force, using Newton's second law we can find the net force is the difference between the two
Ft = F-fr
Ft = 4420-770
Ft = 3650 N
Directed from the car to a truck
. The system acceleration is
Ft = (m₁ + m₂) a
a = Ft / (m₁ + m₂)
a = 3650 / (1300 +2160)
a = 1.05 m / s²
Answer:
<u>because of the doppler effect</u>
Explanation:
<em>Remember</em>, the doppler effect refers to the changes in sound (frequency of sound) observed by a person who is in a position relative to the wave source.
In this example, we notice as the train comes closer to the boy, the sound becomes louder also increasing the pitch slightly, the doppler effect sets in when the train passes the boy because the boy notices a decrease in the pitch of the moving train.
We learn from the change in the observed sound of the train that the frequency of the sound is determined by the distance of the observer from the wave source.
In other words, the closer the source of the sound to the observer; the faster it travels to the observer, however, the farther it is; the lesser it is; the greater the sound heard.