3 years ago

To measure the wavelength of any longitudnal wave, one should measure distance

1 answer:

6 0

I think it’s either A or B

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slamgirl [31]

Answer:

1.) Micrometres screw gauge

2.) Tape rule.

Explanation:

Given that the diameter and the length of a thin wire, approximately 1m in length, are measured as accurately as possible.

what are the best instruments to use ?

To measure the diameter of a thin wire, the best instrument to use is known as micrometres screw gauge.

And to measure the length of a thin wire up to 1 m, the measuring device can be tape rule or long metre rule.

5 0

2 years ago

rodikova [14]

4 water has a low heat capacity and a high vaporization temperate and coasts have low temps

3 0

3 years ago

Andru [333]

The answer is :78 I think

8 0

2 years ago

VARVARA [1.3K]

Answer:

$\theta=40^0$

Explanation:

The magnitude of the magnetic force is

$F_m=evB\sin\theta$

To find the angle, we make $\sin\theta$ subject of the formula

$\implies \sin\theta=\frac{F_m}{evB}=\frac{7.20\times 10^{-13}}{1.6\times 10^{-19}\times 3.90\times 10^6\times 1.80}$

$\implies \sin\theta=0.641025641$

$\therefore \theta=\sin^{-1}=39.8683^0\\\implies \theta\approxeq 40^0$

8 0

3 years ago

arsen [322]

Answer: Heat energy is transferred from warmer objects to cooler objects.

Explanation:

5 0

2 years ago