A _____ is a model of an atom in which each dot represents a valence electron

Physics

1 answer:

Rainbow [258]2 years ago

6 0

Answer:

electron dot diagram is the answer to your question.

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B h combining g two hydrogen atoms ans one oxygen atom for a molecule of water is made from

vivado [14]

The correct answer to this question is this one:

By definition, if a molecule is composed of two hydrogen atoms and one oxygen atom, that molecule is a water.<span> In fact, the structure of water is written as H20, which signifies that two hydrogen (H) atoms and one oxygen (O) atom make up the molecule.</span>

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3 years ago

What is the purpose of a rear view mirror in a car?

Nat2105 [25]

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3 years ago

Quizlet The Cajun Cliffhanger at Great AMerica is a ride in which occupants line the perimeter of a cylinder and spin in a circl

Dmitrij [34]

Answer:

Centripetal Force is the force that keeps the object's rotation in a circular path and it's always directed towards the center of rotation. Mathematically, it is given as,

$F_{c} = \frac{mv^{2} }{r}$

From this equation it can be concluded that the centripetal force is proportional to the product of mass and the square of velocity. It is inversely proportional to the object's distance from the center.

Now in the above mentioned case, when the cylinder begins spinning very rapidly and it's speed becomes double. Then by applying the above equation we conclude that " the force will be increased four times if the speed is doubled as it is proportional to square of speed."

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2 years ago

There is strong evidence that Europa, a satellite of Jupiter, has a liquid ocean beneath its icy surface. Many scientists think

liubo4ka [24]

Answer:

4.44586579653 rpm

Explanation:

G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²

M = Mass of Europa = $4.8\times 10^{22}\ kg$

R = Radius of Europa = $\dfrac{3138000}{2}\ m$

r = Radius of arm = 6 m

$\omega$ = Angular velocity

Acceleration due to gravity is given by

$a=\dfrac{GM}{R^2}\\\Rightarrow a=\dfrac{6.67\times 10^{-11}\times 4.8\times 10^{22}}{\left(\dfrac{3138000}{2}\right)^2}\\\Rightarrow a=1.30053242374\ m/s^2$