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Arlecino [84]
3 years ago
14

Bernice draws an oxygen atom. She draws a small circle for the nucleus. Inside of the circle, she draws plus signs for protons a

nd dots for neutrons. Around the nucleus she uses minus signs to represent electrons. Which statements are true about her drawing? Select all that apply.
A
There are eight protons in the nucleus.

B
There are sixteen protons in the nucleus.

C
There are eight neutrons in the nucleus.

D
There are sixteen neutrons in the nucleus.

E
There are sixteen electrons in her drawing.

F
There are fourteen electrons in her drawing.
Physics
1 answer:
Lelu [443]3 years ago
5 0

Answer

It should be A and C

Explanation:

because oxygen is number 8 in the periodic table of elements and has a atomic weight of 15.999 you use those numbers to figure out what is true between those.

The 8 for oxygen goes for the number of electrons and proton and to find neutrons u round the 15.999 up which now make it 16 and subtract it by the 8 now you have 8 protons, 8 neutrons, and 8 electrons

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If the action force is 100N what will be the reaction force​
erik [133]

Answer:

HONORS PHYSICS

Introduction

Matter & Energy

Math Review

Kinematics

Defining Motion

Graphing Motion

Kinematic Equations

Free Fall

Projectile Motion

Relative Velocity

Dynamics

Newton's 1st Law

Free Body Diagrams

Newton's 2nd Law

Static Equilibrium

Newton's 3rd Law

Friction

Ramps and Inclines

Atwood Machines

Momentum

Impulse & Momentum

Conservation Laws

Types of Collisions

Center of Mass

UCM & Gravity

Uniform Circular Motion

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Kepler's Laws

Rotational Motion

Rotational Kinematics

Torque

Angular Momentum

Rotational KE

Work, Energy & Power

Work

Hooke's Law

Power

Energy

Conservation of Energy

Fluid Mechanics

Density

Pressure

Buoyancy

Pascal's Principle

Fluid Continuity

Bernoulli's Principle

Thermal Physics

Temperature

Thermal Expansion

Heat

Phase Changes

Ideal Gas Law

Thermodynamics

Electrostatics

Electric Charges

Coulomb's Law

Electric Fields

Potential Difference

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Current Electricity

Electric Current

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Electric Meters

Circuit Analysis

Magnetism

Magnetic Fields

The Compass

Electromagnetism

Microelectronics

Silicon

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Wave Characteristics

Wave Equation

Sound

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Doppler Effect

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Reflection

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Diffraction

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Wave-Particle Duality

Models of the Atom

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Silly Beagle

Newtons's 3rd Law of Motion

Newton’s 3rd Law of Motion, commonly referred to as the Law of Action and Reaction, describes the phenomena by which all forces come in pairs. If Object 1 exerts a force on Object 2, then Object 2 must exert a force back on Object 1. Moreover, the force of Object 1 on Object 2 is equal in magnitude, or size, but opposite in direction to the force of Object 2 on Object 1. Written mathematically:

Newton's 3rd Law Equation

This has many implications, some of which aren’t immediately obvious. For example, if you punch the wall with your fist with a force of 100N, the wall imparts a force back on your fist of 100N (which is why it hurts!). Or try this. Push on the corner of your desk with your palm for a few seconds. Now look at your palm... see the indentation? That’s because the corner of the desk pushed back on your palm.

running tiger

Although this law surrounds your actions everyday, often times you may not even realize its effects. To run forward, a cat pushes with its legs backward on the ground, and the ground pushes the cat forward. How do you swim? If you want to swim forwards, which way do you push on the water? Backwards, that’s right. As you push backwards on the water, the reactionary force, the water pushing you, propels you forward. How do you jump up in the air? You push down on the ground, and it’s the reactionary force of the ground pushing on you that accelerates you skyward!

As you can see, then, forces always come in pairs. These pairs are known as action-reaction pairs. What are the action-reaction force pairs for a girl kicking a soccer ball? The girl’s foot applies a force on the ball, and the ball applies an equal and opposite force on the girl’s foot.

How does a rocket ship maneuver in space? The rocket propels hot expanding gas particles outward, so the gas particles in return push the rocket forward. Newton’s 3rd Law even applies to gravity. The Earth exerts a gravitational force on you (downward). You, therefore, must apply a gravitational force upward on the Earth!

5 0
3 years ago
Two rocket ships named Alpha and Beta are at rest in space. Alpha fires its engines, and accelerates because of the thrust (or f
maria [59]

Answer:

Explanation:

Given

Beta rocket has twice the mass of Alpha engine

suppose alpha has a mass of m so beta has 2 m mass

Thrust force on alpha is F

thrust force on beta is 2 F

Acceleration of alpha   a_{alpha}=\frac{F}{m}

Acceleration of beat   a_{beta}=\frac{2F}{2m}=\frac{F}{m}

Therefore acceleration of alpha and beta is same

4 0
3 years ago
A student claims that gravitational fields exist between objects that are not in contact with each other. She creates a diagram
VashaNatasha [74]

Answer:

Option B. The distance between the objects in Figure A is shorter than the distance between the objects in Figure B.

Explanation:

The force of attraction between two masses is given by the following equation:

F = GM₁M₂ / r²

Where:

F => is the force of attraction

M₁ and M₂ => are the masses of the two objects

G => is the gravitational constant.

r => is the distance between the two objects

From the above formula,

The force of attraction (F) is directly proportional to the product of the two masses and inversely proportional to the square of their apart.

This implies that:

1. An increase in the masses of the object will bring about an increase in the force of attraction and a decrease in the masses will leads to a decrease in the force of attraction.

2. An increase in the distance between the two masses will leads to a decrease in the force of attraction and a decrease in the distance between the two masses will lead to an increase in the force of attraction.

Considering the options given in the question above, option B gives the correct answer to the question.

8 0
3 years ago
A supertanker filled with oil has a total mass of 6.1 x108 kg. If the dimensions of the ship are those of a rectangular box 300
IrinaVladis [17]

Answer:

The bottom of the sea is 25 m below sea level.

Explanation:

Given data

Mass = 6.1 × 10^{8} \ kg

\rho_{sea} = 1020\  \frac{kg}{m^{3} }

We know that Buoyant force on the tank is equal to gravity force of the tank.

F_B = F_g

(\rho_{Fluid}) (g) (V_{disp}) = m g

(\rho_{Fluid})  (V_{disp}) = m

1020 × V_{disp} = 6.1 × 10^{8}

V_{disp} = 598039.21 m^{3}

We know that

V_{disp} = W × L × H

598039.21 = 300 × 80 × H

H = 25 m

Therefore the bottom of the sea is 25 m below sea level.

7 0
4 years ago
Five race cars speed toward the finish line at the Jasper County Speedway. The table lists each car’s speed in meters/second. If
nekit [7.7K]
We have: v = d/t
From the expression, we conclude speed is indirectly proportional to speed.
So, the car which will take longer time must have the smallest speed. Among all the options Car C has the smallest speed. So, it would be your answer.

In short, Your Answer would be Option C) Car C will take longer time than any other.

Hope this helps!
6 0
3 years ago
Read 2 more answers
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