PHYSICS MIDDLE SCHOOL

How should Sal correct his diagram?He should add five more dots so that the atom obeys the octet rule.

He should add ten more dots so that all thirteen electrons are shown.

He should add a single dot below the symbol.

He should add one dot below and one dot to the left of the symbol.

Answers

Answer 1
Answer:

Since Sal drew the electron dot diagram of an aluminum atom, Sal should;

C. He should add a single dot below the symbol.
Answer 2
Answer:

Answer: it's c

Explanation:

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Which of the following answers describe how to calculate the acceleration of an object? A. Divide the change in the objects velocity by the time it takes to make that change.
B. Divide the time the object travels by the distance it travels.
C. Calculate the distance the object travels and divide that by the time it takes to get there.
D. Calculate the velocity of an object and divide that by the time the object is in motion.

Answers

A. Divide the change in the objects velocity by the time it takes to make that change.

Explanation:

Acceleration is a vector quantity whose magnitude is given by the following equation:

a=(\Delta v)/(\Delta t)

where

\Delta v is the change in velocity of the object

\Delta t is the time it took to make the change in velocity

Therefore, we see that this equation corresponds to choice A.
I think it's A I hope this is right but I just studied this so I think this is the right answer

Are any minerals flammable

Answers

yes minerals are flammable. I almost caught my shirt on fire onetime
Yes some products are flammable for example : nail polish remover 
Wooden furniture and kids toys 
Hope I helped!!

a spider is crawling on a wall. first it crawls 1 meter up, then 1 meter to the left , and then 1 meter down. what is its total displacement?

Answers


Displacement means the straight distance from the start point to the
end point, no matter what route was followed along the way.

The spider ends up 1 meter to the left of where he started, so his
displacement for the trip is 1 meter.

If he returns to the place where he started, then his displacement
will be zero.

What would happen if the gravity on earth decreases by a small about? ​

Answers

If the gravity decreases on the earth, we will be weightless and pressure will be less exerting on us and we will be able fly

a loss of gravity on earth would  stop pulling down the air,water and earth's atmosphere

ther would be a sudden and significant loss of air pressure

the lack of any forceful gravitational pull would turn humans

Without gravity, humans and other objects would become weightless.

Adam pushes a 47 kg boat across a frozen lake. The coefficient of kinetic friction between the boat and the ice is 0.13 and the boat acceleration at 0.6 m/s^2. Calculate the magnitude of Adams force in the boat.

Answers

Answer:

The magnitude of Adams' force is 88 N

Explanation:

According to Newton's law ∑ forces in direction of motion is equal to

mass multiplied by the acceleration

There are two forces here the friction force and Adams' force

Adams' force is in direction of motion

Friction force is opposite to direction of motion

→ Friction force = μ R,

where μ is the coefficient of friction and R is the normal reaction force

of the boat

→ R = mg

where m is the mass of the boat and g is the acceleration of gravity

→ m = 47 kg , g = 9.8 m/s²

→ R = mg

Substitute the values in the rule

→ R = 47 × 9.8 = 460.6 N

→ Friction force = μ R

→ μ = 0.13 , R = 460.0 N

Substitute the values in the rule

→ Friction force = 0.13 × 460.0 = 59.878 N

→ ∑ Forces in direction of motion = mass × acceleration

→ F - Friction force = mass × acceleration

→ Friction force = 59.878 N , m = 47 kg , a = 0.6 m/s²

Substitute the values in the rule

→ F - 59.878 = 47 × 0.6

→ F - 59.878 = 28.2

Add 59.878 to both sides

→ F = 88.078 N ≅ 88 N

The magnitude of Adams' force is 88 N

The weather patterns seen on Earth are influenced greatly by the

Answers

Answer:

cycling of water in and out of the atmosphere.

Explanation:
the answer is the moon and the earths gravitational force. 
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