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3 years ago

Carbon has 4 valence electrons. Hydrogen has 1 valence

Physics

1 answer:

geniusboy [140]3 years ago

7 0

Answer:

4 hydrogen atoms can form chemical bond with 1 carbon atom.

Explanation:

CH4. methane

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Help please! This question is driving me crazy

Varvara68 [4.7K]

Answer:

-10.8°, or 10.8° below the +x axis

Explanation:

The x component of the resultant vector is:

x = 3.14 cos(30.0°) + 2.71 cos(-60.0°)

x = 4.07

The y component of the resultant vector is:

y = 3.14 sin(30.0°) + 2.71 sin(-60.0°)

y = -0.777

Therefore, the angle between the resultant vector and the +x axis is:

θ = atan(y / x)

θ = atan(-0.777 / 4.07)

θ = -10.8°

The angle is -10.8°, or 10.8° below the +x axis.

3 0

3 years ago

The distance between two consecutive nodesof a standing wave is 20.9cm.Thehandgen-erating the pulses moves up and down throughac

irina1246 [14]

Answer:

Velocity, v = 0.239 m/s

Explanation:

Given that,

The distance between two consecutive nodes of a standing wave is 20.9 cm = 0.209 m

The hand generating the pulses moves up and down through a complete cycle 2.57 times every 4.47 s.

For a standing wave, the distance between two consecutive nodes is equal to half of the wavelength.

$\dfrac{\lambda}{2}=0.209\ m\\\\\lambda=0.418\ m$

Frequency is number of cycles per unit time.

$f=\dfrac{2.57}{4.47}\\\\f=0.574\ Hz$

Now we can find the velocity of the wave.

Velocity = frequency × wavelength

v = 0.574 × 0.418

v = 0.239 m/s

So, the velocity of the wave is 0.239 m/s.

4 0

2 years ago

Suppose light from a 632.8 nm helium-neon laser shines through a diffraction grating ruled at 520 lines/mm. How many bright line

Leya [2.2K]

Answer:

1 bright fringe every 33 cm.

Explanation:

The formula to calculate the position of the m-th order brigh line (constructive interference) produced by diffraction of light through a diffraction grating is:

$y=\frac{m\lambda D}{d}$

where

m is the order of the maximum

$\lambda$ is the wavelength of the light

D is the distance of the screen

d is the separation between two adjacent slit

Here we have:

$\lambda=632.8 nm = 632.8\cdot 10^{-9} m$ is the wavelength of the light

D = 1 m is the distance of the screen (not given in the problem, so we assume it to be 1 meter)

$n=520 lines/mm$ is the number of lines per mm, so the spacing between two lines is

$d=\frac{1}{n}=\frac{1}{520}=1.92\cdot 10^{-3} mm = 1.92\cdot 10^{-6} m$

Therefore, substituting m = 1, we find:

$y=\frac{(632.8\cdot 10^{-9})(1)}{1.92\cdot 10^{-6}}=0.330 m$

So, on the distant screen, there is 1 bright fringe every 33 cm.

6 0

3 years ago

A solenoid that is 133 cm long has a radius of 2.99 cm and a winding of 1740 turns; it carries a current of 3.91 A. Calculate th

erica [24]

Answer:

The value is $B = 0.0643 \ T$

Explanation:

From the question we are told that

The length of the solenoid is $L = 133 \ cm = 1.33 \ m$

The radius is $r = 2.99 \ cm = 0.0299 \ m$

The number of turns is $N = 1740 \ turns$

The current it carries is $I = 3.91 \ A$

Generally the magnitude of the magnetic field is mathematically represented as

$B = \frac{\mu_o * N * I}{L}$

Here $\mu_o$ is the permeability of free space with value $\mu_o = 4\pi *10^{-7} \ N/A^2$

=> $B = \frac{ 4\pi * 10^{-7} * 1740 * 3.91}{0.133}$

=> $B = 0.0643 \ T$

5 0

3 years ago

It is the year 802,315 and due to the sun growing, Earth is starting to get too hot for life to survive. Oceans are beginning to

Paha777 [63]

Answer:

Explanation:

We will die soon anyway we all die

4 0

3 years ago