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3 years ago

The electrons between atoms in metallic bonds

Physics

2 answers:

katovenus [111]3 years ago

8 0

The answer is (B)

Hope this helps :)

Irina18 [472]3 years ago

6 0

The answer is : B. allow for bonding metals to be stable. Metals, nonmetals all bond to be stable. Metallic bonding is the force of attraction between valence electrons and the metal ions.The electrons and the positive ions in the metal have a strong attractive force between them.

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A girl has a weight of 450 N and her feet have a total area of 0.0300 m2. Calculate the pressure her feet put on the ground.

GenaCL600 [577]

Answer:

15000N/m²

Explanation:

Given parameters:

Weight = 450N

Total area = 0.03m²

Unknown:

Pressure under her feet = ?

Solution:

Pressure is the force per unit area on a body.

Pressure = $\frac{Force }{Area}$

Weight is a type of force;

Pressure = $\frac{450}{0.03}$ = 15000N/m²

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3 years ago

Choose the true statements about electric fields and forces. (Choose 3)

aleksley [76]

Answer:

The three best answers are:

Electric fields can be positive or negative (depending on source)

Electric fields can attrace or repel objets (assuming the object is charged)

Electric forces are strongest near the charged object E ∝ 1 / R^2

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2 years ago

If Ms. Ramirez drops a watermelon from the top of the second-floor fire escape outside her room, and it takes 1.5 seconds to hit

mamaluj [8]

The velocity of the watermelon as it hits the ground is 14.715 m/s.

Given the data in the question;

Since the Watermelon was dropped from rest,

Initial velocity of the Watermelon; $u = 0m/s$

Time taken for the Watermelon to hit the ground; $t = 1.5s$

We know that, Acceleration due to gravity; $g = 9.81 m/s^2$

Now, we determine the velocity of the watermelon as it hits the ground which is the final velocity.

From the First Equation of Motion:

$v = u + at$

Now, under gravity, acceleration ''a" will Acceleration due to gravity; $g = 9.81m/s^2$ , "v" is the final velocity, "u" is the initial velocity and "t" is the time taken.