Answer:
its the sound that a heart produces when beating, this can help doctors detect abnormalities
Answer:
no
Explanation:
they cannot because they contain the same amount of liquid
The diameter of the sphere is 2cm.
<h3>How to calculate the diameter?</h3>
From the diagram, the first sphere on the ruler is at 4cn and the last sphere is at 12cm.
Therefore, the length will be:
= 12 - 4.
= 8cm
The diameter of one sphere will be:
= Length / 4
= 8/4
= 2
Therefore, the diameter of the sphere is 2cm.
Note that the second question wasn't found online.
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Answer:51.44 units
Explanation:
Given
x component of vector is ![-27.3\hat{i}](https://tex.z-dn.net/?f=-27.3%5Chat%7Bi%7D)
y component of vector is ![43.6\hat{j}](https://tex.z-dn.net/?f=43.6%5Chat%7Bj%7D)
so position vector is
![r=-27.3\hat{i}+43.6\hat{j}](https://tex.z-dn.net/?f=r%3D-27.3%5Chat%7Bi%7D%2B43.6%5Chat%7Bj%7D)
Magnitude of vector is
![|r|=\sqrt{27.3^2+43.6^2}](https://tex.z-dn.net/?f=%7Cr%7C%3D%5Csqrt%7B27.3%5E2%2B43.6%5E2%7D)
![|r|=\sqrt{2646.25}](https://tex.z-dn.net/?f=%7Cr%7C%3D%5Csqrt%7B2646.25%7D)
|r|=51.44 units
Direction
![tan\theta =\frac{43.6}{-27.3}=-1.597](https://tex.z-dn.net/?f=tan%5Ctheta%20%3D%5Cfrac%7B43.6%7D%7B-27.3%7D%3D-1.597)
vector is in 2nd quadrant thus
![180-\theta =57.94](https://tex.z-dn.net/?f=180-%5Ctheta%20%3D57.94)
![\theta =122.06^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%20%3D122.06%5E%7B%5Ccirc%7D)
Answer:
More force
Explanation:
Object A has more mass than object B
For object A to accelerate at the same rate as object B, it will need more force.
According to Newton's second law of motion "the net force on a body is the product of its mass and acceleration".
Net force = mass x acceleration
Now, if a body has more mass and needs to accelerate at the same rate as another one with a lower mass, the force on it must be increased.