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likoan [24]
3 years ago
5

Which waves are used in medicine?

Physics
1 answer:
Reika [66]3 years ago
4 0

Answer:

C

Explanation:

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A source charge of 5.0 µC generates an electric field of 3.93 × 105 at the location of a test charge. How far is the test charge
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Answer:

B. )  0.34 m

I definitely guessed and got the right answer so :))

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Q:1 write down the differences between mass and weight ?​
Evgesh-ka [11]

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mass is the amount of "matter" in an object. weight is the force exerted on an object by gravity

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3 years ago
A 2 kg object being pulled across the floor with a speed of 10 m/sec is suddenly
zvonat [6]

Answer:

The frictional force producing this deceleration would have a magnitude of 4\; \rm N.

Explanation:

The velocity of this object changed by \Delta v = (-10\; \rm m\cdot s^{-1}) in \Delta t = 5\; \rm s. The acceleration of this object would be:

\begin{aligned}a &= \frac{\Delta v}{\Delta t} \\ &= \frac{-10\; \rm m\cdot s^{-1}}{5\; \rm s} = -2\; \rm m\cdot s^{-2}\end{aligned}.

Let m denote the mass of this object. By Newton's Second Law of Motion, the net force on this object would be:

\begin{aligned}F &= m \, a \\ &= 2\; \rm kg \times (-2\; \rm m\cdot s^{-2}) \\ &= -4\; \rm N\end{aligned}.

(1\; {\rm kg \cdot m \cdot s^{-2} = 1\; {\rm N}.)

If the floor is level, friction would be the only unbalanced force on this object. Thus, the magnitude of the frictional force on this object would also be 4\; {\rm N}, same as the magnitude of the net force on this object.

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What is the outcome of a star that runs out of hydrogen
givi [52]
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Nevertheless, if the star is bigger, this helium will be also consumed and the nucleus transformed in Carbon, then in Oxigen, and so on. Being the last transformation Iron until the star delivers all its energy.

Note this process will depend on how massive the star is.

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Why does the fed rarely change the reserve requirement
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It can be disruptive to the whole banking system.

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