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3 years ago

Atoms form chemical bonds to satisfy the blank rule and become blank

Physics

1 answer:

Masja [62]3 years ago

5 0

Answer:

Atoms form chemical bonds to satisfy the Octet rule and become Stable element.

Explanation:

Every atom desires to achieve total eight valence electron in their outermost shell to become stable. This rule is known as octet rule.
During the chemical reaction process, every element goes through the process of receiving or donating the element to complete the octet rule to become stable.

The electronic configuration of element having eight electrons in its valence shell is the noble gases.

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a bullet is fired upwards with the initial velocity of 250m/s. determine the time taken to reach the maximum height

Mnenie [13.5K]

The final velocity is 0 and the acceleration is gravity. Vf=Vi+at because gravity opposes the motion it will be -g
0=250-gt
gt=250 ....g=10
t=25sec

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3 years ago

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In your own words describe the motion of convection currents?

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Boojho saw a cracker burst at night at a distance from his house. He heard

Dominik [7]

Answer:

The primary reason of seeing the cracker burst and hearing the sound later is because the speed of sound and light. Speed of light is in the vicinity of 3*10^8m,/ sec while the speed of sound is at a distance of 332m/sec. It is similar to lightning that strikes before the sound.

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3 years ago

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A pitcher throws a 0.15 kg baseball so that it crosses home plate horizontally with a speed of 10 m/s. It is hit straight back a

Maru [420]

Answer:

-5.1 kg m/s

Explanation:

Impulse is the change in momentum.

Change in momentum= final momentum - initial momentum=m $v_{2}$ +m $v_{1}$

Plugging in the values= -0.15*24 - (0.15*10) (The motion towards the pitcher is negative as the initial motion is considered to be positive)

Impulse=-5.1 kg m/s (-ve means that it is the impulse towards the pitcher)

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3 years ago

In the desert air, sound travels at 358 meters per second (m/s). In the polar air, sound travels at 330 meters per

Sati [7]

Answer:

The correct option is;

C. The temperature of the air affects the speed of sound

Explanation:

The information given are;

The speed with which sound travels in the desert air = 358 m/s

The speed with which sound travels in the polar air = 330 m/s

The major difference between the desert air and the polar air is that the temperature of the desert air is hotter than the temperature of the air in the polar region. Therefore the speed of sound is affected by the air temperature.

The equation that gives the relationship of the speed of sound in air, $v_{air}$ , to temperature is presented as follows;

$v_{air} = 331\frac{m}{s} \times \sqrt{\dfrac{T_K}{273 K} } = 331\frac{m}{s} \times \sqrt{1 + \dfrac{T_{^{\circ}C}}{273 ^{\circ} C} }$

Which shows that the speed of sound in air, $v_{air}$ , rises as the temperature of the air rises.

Where;

$T_{^{\circ}C}$ = The temperature of the air in degrees Celsius

$T_K$ = The temperature of the air in degrees Kelvin.

7 0

4 years ago

Atoms form chemical bonds to satisfy the blank rule and become blank​

Atoms form chemical bonds to satisfy the blank rule and become blank