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3 years ago

X-ray waves are low energy waves. True or False

Physics

1 answer:

Marat540 [252]3 years ago

7 0

Depends on your personal frame of reference.

Compared to gamma rays -- True

Compared to radio waves -- False

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2. How could you tell if the powder was salt, sugar, flour, or baking soda

m_a_m_a [10]

By looking at each ones texture. and maybe even color

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3 years ago

If a m = 74.7 kg m=74.7 kg person were traveling at v = 0.800 c v=0.800c , where c c is the speed of light, what would be the ra

igomit [66]

Answer:

$\frac{E}{E_c} =3.125$

Explanation:

The kinetic energy of a rigid body that travels at a speed v is given by the expression:

$E_c=\frac{1}{2} mv^2$

The equivalence between mass and energy established by the theory of relativity is given by:

$E=mc^2$

This formula states that the equivalent energy $E$ can be calculated as the mass $m$ multiplied by the speed of light $c$ squared.

Where $c$ is approximately $3\times 10^{8} m/s$

Hence:

$E_c=\frac{1}{2} (74.7)*(0.8*3\times 10^{8} )^2=2.15136\times 10^{18} J$

$E=(74.7)*(3\times 10^{8} )^2 =6.723\times 10^{18} J$

Therefore, the ratio of the person's relativistic kinetic energy to the person's classical kinetic energy is:

$\frac{E}{E_c} =\frac{6.723\times 10^{18}}{2.15136\times 10^{18}} =3.125$

4 0

3 years ago

if the instantaneous current in the circuit is giveen by I=3 sin theta amperes, the rms value of the current will be

Kisachek [45]

Answer:

$I_{rms}=2.12\ A$

Explanation:

Given that,

The instantaneous current in the circuit is giveen by :

$I=3\sin\theta\ A$

We need to find the rms value of the current.

The general equation of current is given by :

$I=I_o\sin\theta$

It means, $I_o=3\ A$

We know that,

$I_{rms}=\dfrac{I_o}{\sqrt2}\\\\=\dfrac{3}{\sqrt2}\\\\=2.12\ A$

So, the rms value of current is 2.12 A.

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3 years ago

The organization of former British colonies that includes Canada, India, Pakistan, and other countries is called the __________.

Troyanec [42]

B. League of Nations failed and was not a member of A. United nations which was established after its failure. So, The organization of former British colonies that includes Canada, India, Pakistan, and other countries is called the C. Commonwealth of Nations.

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3 years ago

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Students in Ms. Bailey's class were studying speed. Four students rolled balls across the floor a distance of 30 cm. Their times

Mumz [18]

Answer: C

Explanation: Ball 2 - Ball 1 - Ball 4 - Ball 3

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3 years ago

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