According to the octet rule, an atom with two electron shells is most stable when it contains eightA. isotopes.
B. electrons.
C. neutrons.
D. protons.

Answers

Answer 1

Answer:

According to the octet rule, an atom with two electron shells is most stable when it contains eight electrons. The answer is letter B. All atoms wanted to attain a stable energy level equal to that of the noble gases. A noble gas is where all valence electrons in the valence shell is completely filled.

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a boy on a bicycle is resting at the top of a hill then he rides his bicycle down the hill describe how the boy potential and kineti energy differ at the top middle and bottom of the him

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Answer:

Explanation:

As the boy is riding from top to bottom of the hill his Potential energy gradually decreasing and simultaneously converting into the Kinetic energy.

At the top, his Potential Energy is maximum and kinetic energy is minimum i.e. zero

In the middle of the hill, he possesses both Potential and kinetic energy with equal magnitude.

At the bottom whole Potential energy is converted into Kinetic energy.

Thus Potential Energy is maximum at the top while Kinetic energy is maximum at the bottom.

The center of gravity is defined as: a. The part of the skeleton composed of the bones of the vertebral column, ribs, and skull b. A plane the passes through the midpoint of the body c. State of an object as a result of forces pushing on it d. Imaginary point through which the resultant force of gravity acts on an object

Answers

Answer:

the corect answer it b and c

Explanation:

b. the density of lines shows the strength of the force.

c. the arrows on the lines of force show which way a posative object will move.

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The radius of Venus is 3760.4 miles. What is the approximate surface area of Venus, to the nearest whole number?

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The answer would be 177696122.85099155 (this is without rounding off to the nearest whole number). If rounded off to the nearest whole number, then the answer is 177,696, 123 miles. I got to this answer through solving for the surface area of a sphere (since Venus is one) using the radius.

The potential difference across wire is 75V and its electric resistance is 30Ω. Find out the electric current through the wire.

Answers

Answer:

current = 2.5A

Explanation:

We can use Ohm's law which states that V∝R so V=IR when the temperature is constant where V is the voltage (potential difference), I is the current and R is the resistance.

75= 30I

I= 75/30= 2.5A

Recognize the relationship between stiffness of the medium and the speed of a wave.

Answers

The relationship between the stiffness of a medium and the speed of the wave is directly proportional. Because molecules are closer in a stiff medium, an increase of stiffness in a medium would also result to an increase in which a wave travels.

I need help I can't solve it and I'm struggling badly. Justin weighs 185 lb. and decides to climb a staircase that has a vertical distance of 12 m. He climbs the stairs in 12.7 seconds. Calculate his work: