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Vesnalui [34]
3 years ago
10

What medical technique uses sound wave pulses and their reflections to map structures and organs inside the body?

Physics
2 answers:
garri49 [273]3 years ago
7 0

The correct answer is “C” ultrasound. Hope this helps!

melomori [17]3 years ago
7 0

Hi the ultrasound is the answer it is used in many medical procedures to diagnose conditions. Hope this helps. :)

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According to Lenz's law, the induced current in a circuit always flows to oppose the external magnetic field through the circuit
Makovka662 [10]

Answer:

True.

Explanation:

According to Lenz's law, the induced current in a circuit always flows to oppose the external magnetic field through the circuit. This statement is true.

The Faraday's law of induction is given by :

\epsilon=-\dfrac{d\phi}{dt}

Here, negative sign shows that the direction of induced emf is such that opposes the changing current that is its cause.

Hence, the statement is true.

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please explain!! 15. You want to calculate the displacement of an object thrown over a bridge. Using -10 m/s2 for acceleration d
qwelly [4]

I will be making the assumption that you aren't actually really throwing the object over a bridge but rather dropping it as no initial velocity is actually given, which is required to do this problem. This will mean that initial velocity will be zero in this case.

First off, let's state all of the information we are given (the five kinematic quantities)

v₁ = 0 m/s

v₂ = cannot be determined

Δd = ?

Δt = 8 seconds

a (g) = 10 m/s² [down]

Now analyzing what we have, we can determine that we have 3 given quantities, 1 we must solve for, and 1 that cannot be found given our current information.

The five kinematic equations are useful because they all contain four kinematic quantities, and with different combinations too. In this case, we have three (v₁, Δt, a) and have to solve for Δd. The kinematic equation that fits with this would be:

Δd = v₁Δt + 0.5(a)(t)²

We can plug in our given values now.

Δd = 0 m/s(8 s) + 0.5(10 m/s²)(8 s)²

Δd = 0.5(10 m/s²)(8 s)²

Δd = <u>3</u>20 m

Therefore, the total displacement of the object would have to be 300m. (Due to significant digit rules)

7 0
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