Answer:
A scientific hypothesis must be tetable so it can become a scientific theory.
Explanation: I think
Answer:
A wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.
First, we must recall that distance is the total length traveled by an object in which the direction of the motion does not matter. Meanwhile, displacement is the distance of the object from its starting point which means the directions matters for displacement.
Now, speed is distance over time while velocity is displacement over time. Since we're talking about the same object's motion, the total time traveled is (120 + 90) = 210 seconds.
Now, the total distance traveled by the object is (400 + 250) = 650 m. Meanwhile the total displacement traveled by the object is 400 m, East + 250 m, West = 150 m, East.
Now, to find the speed and velocity, we just divide the values of distance and displacement, respectively, over time. Thus, we have
speed = 650 m / 210s ≈ 3.095 m/s
velocity = 150 m, East /210 s ≈ 0.714 m/s, East
Now, rounding the values up to 2 significant digits, we have
a) speed = 3.1 m/s
b) velocity = 0.71 m/s, East
Hello,
Here is your answer:
The proper answer to this question is that you find the velocity by "you have to divide the distance by time of the object".
If you need anymore help feel free to ask me!
Hope this helps!
All are correct except
Aerobic respiration is only done by animal cells but anaerobic is done by plant and animal cells.
Hope this helps!
