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3 years ago

13

Because the moon rotates once for each revolution around Earth,

2 answers:

irina [24]3 years ago

7 0

Good Morning, how are you?

Your answer is C. The moon orbits and rotates the same, so we NEVER see the far side of the moon from earth :)

Have a great day :)

Mnenie [13.5K]3 years ago

7 0

Answer:

C. The moon orbits and rotates the same, so we NEVER see the far side of the moon from earth

Explanation:

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An electron moves along the z-axis with vz=4.1Ã107m/s. As it passes the origin, what are the strength and direction of the magne

Artist 52 [7]

Answer:

a

The value of magnetic field is $B_a=6.56*10^{-19} T$

In the direction of the positive x - axis

b

The value of magnetic field is $B_a=6.56*10^{-19} T$

In the direction of the positive z - axis

Explanation:

From the question we are told that

The velocity of the electron is $v_z = 4.1*10^{7}m/s$

Considering the first position

The equation for the magnetic field is

$\= B = \frac{\mu_0}{ 4 \pi} \frac{q \=v * \= r}{r^2}$

Now $r = \sqrt{i^2 + j^2 + k^2}$

substituting values

$r = \sqrt{1^2 +0^2 +0^2}$

$= 1$

$\= r = \frac{\r r}{r}$

$\r r = 1 i + 0j + 0k$

Therefore $\= r = \frac{1i + 0j + 0k}{1}$

$= i$

So Substituting $4 \pi *10^ {-7}$ for $\mu_o$ , $1.602 *10^{-19}$ for q

$\= B_a = \frac{4\pi *10^{-7}}{4 \pi} \frac{1.602 *10^{-19} * 4.1*10^{7} * i}{1^2}$

$\= B_a=6.56*10^{-19} T (i)$

Considering the second position

Here

$r = \sqrt{0^2 + 0^2 + 2^2}$

$=2$

$\= r = \frac{\r r}{r}$

$\r r = 0 i + 0j + 2k$

$\= r = \frac{0i + 0j + 2k}{2}$

$= k$

So Substituting $4 \pi *10^ {-7}$ for $\mu_o$ , $1.602 *10^{-19}$ for q

$\= B_a = \frac{4\pi *10^{-7}}{4 \pi} \frac{1.602 *10^{-19} * 4.1*10^{7} * k}{1^2}$

$\= B_a=6.56*10^{-19} T (k)$

6 0

3 years ago

What is the original source of energy for gasoline?

rodikova [14]

Answer:

The original source of energy for gasoline is the SUN.

5 0

3 years ago

Nostrana [21]

Answer:

True

no water ever leaves the planet

4 0

3 years ago

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A spring of spring constant k=8.25N/m is displaced from equilibrium by a distance of 0.150m. What is the stored energy in the fo

inysia [295]

Answer:

0.0928J

Explanation:

the pulling force of spring F=-kx

where x is the displacement from equilibrium position.

energy stored:

$\int\limits^x_0 {-F} \, dx \\=\int\limits^x_0 {kx} \, dx \\\\=\frac{kx^{2} }{2}$

*** Its fine if you know nothing about calculus. Just apply the equation

$U=\frac{kx^{2} }{2}$

where U is the potential energy of the spring***

put x=0.150, $U=\frac{8.25}{2}$ × $0.150^{2}$ = 0.0928J (corr. to 3 sig. fig.)

4 0

3 years ago

Which color in the visible spectrum has the highest frequency?<br> The Visible Light Spectrum

spayn [35]

Answer:

It Is violet

Explanation:

It has the shortest wavelengths and the shorter the wavelengths the higher the frequency.

8 0

3 years ago

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