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jonny [76]
3 years ago
12

A pulse of ultrasound is sent into the womb. It travels at a speed of 1500m/s in soft tissue and is reflected off the skull of t

he foetus. The reflected pulse is detected 0.0001s later. At what depth is the skull?​
Physics
1 answer:
erma4kov [3.2K]3 years ago
8 0
D=vt use this equation to get the depth of the skull
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The final displacement from the origin is <u>1.6</u> km to the <u>NE</u>

Explanation:

The directions in which the delivery truck travels are;

1) 2.8 km North = 2.8·\hat j, in vector form

2) 1.0 km East = 1.0·\hat i, in vector form

3) 1.6 km South = -1.6·\hat j, in vector form

Therefore, to find the final displacement, Δx, of the delivery truck, we add the individual displacements as follows;

Final displacement, Δd = 2.8·\hat j + 1.0·\hat i +(-1.6·\hat j) = 1.2·\hat j + 1.0·\hat i

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Therefore, the resultant displacement of the delivery truck is approximately 1.6 km, NE from the origin.

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