What are five atomic models that have been proposed over time ?

Answers

Answer 1
Air, water , atomic acid , and pocket rocket

Related Questions


8) Find the X and Y component of 10degree vector that has 5N.

Answers

Answer:

Fx  = 4.92 [N]

Fy = 0.868 [N]

Explanation:

Let's take the 10 degrees as a measure from the horizontal component to the vector.

Thus taking the components in the X & y axes respectively:

Fx = 5*cos(10) = 4.92 [N]

Fy = 5*sin(10) = 0.868 [N]

Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 250 amps?

Answers

Answer:

V= I x R =250 x 0.0198 = 4.95 Volts

Explanation:

The voltage across the resistor is 4.95 Volts.

How do you calculate the voltage?

Given that the resistance is 0.0198 ohms and the current flowing through the silver is 250 amps.

The voltage V across the resistor is the product of the current I flowing through the resistors and resistance R.

[tex]V = IR[/tex]

Substituting the values, we get the voltage.

[tex]V = 250 \times 0.0198[/tex]

[tex]V = 4.95 \;\rm V[/tex]

Hence we can conclude that the voltage across the resistor is 4.95 Volts.

To know more about the voltage, follow the link given below.

https://brainly.com/question/238298.

Please help me out with my physics

Answers

It’s A. Hope this helps

A driver in a 500 kg car going 20 m/s sees a large box in the middle of the road 100 meters away. How much net force is required to get the car to stop without hitting the box?

WILL GIVE BRAINLY AND 50 POINTS

Answers

Answer:

620

Explanation:

Answer:

100

correct me if I am wrong

What are the Differences between ancient and modern astronomy?

Answers

Answer:

ancient astronomy is back in the 1600s and is really old and modern astronomy is present and astronomy today

Time period and technology are the main differences between ancient and modern astronomy.

The main differences between ancient and modern astronomy is the era in which they were created and developed. The ancient astronomy developed by Greeks and technology for study is very old. The first documented records of systematic astronomical observations occurs in Assyro-Babylonians around 1000 BCE.

While on the other hand, modern astronomy refers to the astronomy that is developed in this modern period and use advance technology. Modern astronomy includes many elements of the motions as well as characteristics of moving bodies so we can conclude that time period and technology are the main differences between ancient and modern astronomy.

Learn more: https://brainly.com/question/18659457

What are 3 parts of daltons atomic theory ?

Answers

1) all matter is made of atoms , atoms are indivisible and indestructible 2) compounds are formed by a combination of two or more different kinds of atoms 3) a chemical reaction is an arrangement of atoms

THIS ONE IS URGENT!!!

Examine the drawing of a molecule. Each ring represents an atom of nitrogen (N). What's the chemical formula of this
substance?

Answers

Hi :)

The chemical formula for nitrogen gas is N2.

Nitrogen gas is one of the diatomic elements, in which one molecule consists of two atoms of the same element bonded by one or more covalent bonds.

Answer:

The chemical formula for nitrogen gas is N2.

Explanation:

I just did this question and this was the correct answer!

I need help with this problem

Answers

I also need help with this problem!!


If m=120kg and a=15m/s2, what is the force

Answers

Answer:

F= 1800N

Explanation:

the equation for force is F= ma

so plug in the numbers: F= (120)(15)

solve this to get F= 1800N

tip: don't forget to add the units when writing your answer :)

Which of the following statments does not represent the relationship between culture and one's moral reasoning?
A.
Cultures generally differ in what behaviors are considered appropriate.
B.
One's thought and beliefs are generally independent of cultural influences.
C.
Many cultures value an individual's rights and well-being when establishing moral standards.
D.
Many cultures consider situational influences when judging one's behavior as right or wrong.

Answers

B. One’s thought and beliefs are generally independent of cultural influences

The only option that does not represent the relationship between culture and one's moral reasoning is one's thought and beliefs are generally independent of cultural influences.

What is culture?

Culture can be defined as the people's way of life. It is an umbrella term which encompasses the social behavior and norms found in human societies.


What is moral reasoning?

Moral reasoning is the process by which people apply their thought or make judgment in analyzing issues and making decisions.

Thus, the only option that does not represent the relationship between culture and one's moral reasoning is one's thought and beliefs are generally independent of cultural influences.

Learn more about culture here: https://brainly.com/question/25010777

At a drag race, a jet car travels 1/4 mile in 5.2 seconds. What is the final speed of the
car and its acceleration?

Answers

Answer:

1609.3

Explanation:

An electric current of 0.75 A passes through a circuit that has a resistance of 175 12. According to Ohm's law, what is the voltage of the circuit? O A. 176 V O B. 0.004 V O C. 233 V O D. 131 V​

Answers

Answer:

15.34 i think

Explanation:

What are the two parts of an atom?

the nucleus and the proton cloud
the neutron and the electron cloud
the neutron and the proton cloud
the nucleus and the electron cloudWhen an atom that has no charge loses two electrons, it becomes a

positive ion.
negative ion.
positive isotope.
negative isotope.

Answers

Answer:

The two main components of an atom are the nucleus and the cloud of electrons

postive ion

Explanation:

your welcome !!

postive ion explation - When an atom that has no charge loses two electrons, it becomes a positive ion. negative ion. positive isotope. negative isotope When an atom that has no charge loses two electrons, it becomes a positive ion.

All atoms want to be like which group of atoms?

Answers

I believe it is the noble gasses

A ball is released from the top of a 2-meter long ramp and rolls down with a uniform acceleration of 3 m/s^2.
a. How fast is the ball moving when it reaches the bottom of the ramp?
b. How long does it take to roll down the ramp?

Answers

Answer:

a. 3.46 m/s

b. 1.15 s

Explanation:

Given:

Δx = 2 m

v₀ = 0 m/s

a = 3 m/s²

a. Find v

v² = v₀² + 2aΔx

v² = (0 m/s)² + 2 (3 m/s²) (2 m)

v = 3.46 m/s

b. Find t

Δx = v₀ t + ½ at²

2 m = (0 m/s) t + ½ (3 m/s²) t²

t = 1.15 s

Answer:

a. 3.46 m/s

b. 1.15 s

Explanation:

NEED HELP ASAP PLS (with work)
A punt is kicked at an angle of 60 with a speed of 40 m/s, and lands at the same
height from which it was kicked.

How far away will the ball land?

What is the maximum height reached by the ball?

What is the hang time? Total

Answers

Answer:

1) The ball will land approximately 141.4 m away from where it was kicked

2) The maximum height reached is approximately 61.22 m

3) The total hang time is approximately 7.07 seconds

Explanation:

First we list out the known parameters

The direction in which the punt is kicked, θ = 60°

The speed with which the punk is kicked, v₀ = 40 m/s

1) The distance away (the range, R) the ball will land is given by the equation;

[tex]R = \dfrac{v_0^2 \times sin(2\cdot \theta)}{g}[/tex]

Where;

g =  The acceleration due to gravity = 9.8 m/s²

Substituting the values, gives;

[tex]R = \dfrac{40^2 \times sin(2\times60^{\circ })}{9.8} \approx 141.4 \ m[/tex]

The distance away the ball will land ≈ 141.4 m

2) The maximum height is given m=by the following equation for vertical motion;

(v₀ × sin(θ))² = 2 × g × [tex]h_{max}[/tex]

Obtained from the equation of motion, v² = u² - 2×g×h where at maximum height;

v = 0 at maximum height, the ball stops upward motion

h = Height of motion = [tex]h_{max}[/tex] at maximum height

v, and u are the vertical component of the velocity, v₀

Substituting the values in the equation for the maximum height, gives;

(40 × sin(60))² = 2 × 9.8 × [tex]h_{max}[/tex]

(40 × (√3)/2)² = 1200 = 19.6 × [tex]h_{max}[/tex]

1200 = 19.6 × [tex]h_{max}[/tex]

[tex]h_{max}[/tex] = 1200/19.6 ≈ 61.22 m

The maximum height reached ≈ 61.22 m

3) The time to maximum height is given by the following equation of motion;

[tex]v_y[/tex] = v₀ × sin(θ) - g × t

[tex]v_y[/tex] = 0 at maximum height

We therefore have;

v₀ × sin(θ) = g × t

t =  v₀ × sin(θ)/g = 40 × sin(60°)/9.8 = (40 ×(√3)/2)/9.8 = 3.535 seconds

Given that the motion of the ball is symmetrical about the maximum height, we have;

The time from ground level to maximum height = The time from the maximum height back to the ground level

The total time hang time = The time from ground level to maximum height + The time from the maximum height back to the ground level

The total time hang time ≈ 3.535 + 3.535 ≈ 7.07 seconds.

The total time hang time ≈ 7.07 seconds.

HEY CAN ANYONE PLS ANSWER DIS!!!!

Answers

Answer:

A)  distillation.

Explanation:

Benzene boils at 81∘C while chloroform at about 61∘C. The separation can be done by distillation.

please mark me brainliest! hope this helps, god bless :)

if a runner is moving 2.88m/s directly north and accelerating at .350 m/s^2 at an angle of -52.0. At the point in the motion where she is running directly east what is the displacement

Answers

Answer:

19.1 m, 52.0°

Explanation:

Given:

v₀ₓ = 0 m/s

v₀ᵧ = 2.88 m/s

vᵧ = 0 m/s

aₓ = 0.350 m/s² cos(-52.0°) ≈ 0.215 m/s²

aᵧ = 0.350 m/s² sin(-52.0°) ≈ -0.276 m/s²

Find: Δx and Δy

First, find time.

vᵧ = aᵧt + v₀ᵧ

0 m/s = (-0.276 m/s²) t + 2.88 m/s

t = 10.4 s

Now find the displacement components Δx and Δy.

Δx = v₀ₓ t + ½ aₓ t²

Δx = (0 m/s) (10.4 s) + ½ (0.215 m/s²) (10.4 s)²

Δx = 11.7 m

Δy = v₀ᵧ t + ½ aᵧ t²

Δy = (2.88 m/s) (10.4 s) + ½ (-0.276 m/s²) (10.4 s)²

Δy = 15.0 m

The magnitude of the displacement is:

d² = Δx² + Δy²

d² = (11.7 m)² + (15.0 m)²

d = 19.1 m

The direction of the displacement is:

θ = atan(Δy / Δx)

θ = atan(15.0 m / 11.7 m)

θ = 52.0°

What do you guys like about school

Answers

Answer:

umm.....the teachers and friends

The drama, and friends.

What is the density of a 15 g object that has a volume of 6 cm??

Answers

Answer:

2.5 g/cm³

Explanation:

To find density, divide the mass by the volume. In this case, 15 grams divided by 6 cm³ equals 2500 kg/m³, or simplified, 2.5 g/cm³. Hope it helps! To type ³, turn on Num Lock and then press Alt+0179. Have a good day!

whats an astral projection

Answers

Answer:Esotericism

Explanation:

it’s something that’s in intentional out of body experience

Answer:

Astral projection is a term used in esotericism to describe an intentional out-of-body experience that assumes the existence of a soul or consciousness called an "astral body" that is separate from the physical body and capable of travelling outside it throughout the universe.

Explanation:

An alien spaceship is 300 m above the ground and moving at a constant velocity of 250 m/s upwards. How high above the ground is the ship after 3 seconds?

Answers

Answer: 1050 m

Explanation: 300 + 250x3 = 1050.

4. Cliff divers at Acapulco jump into the sea from a cliff 36.0m high. At the level of the sea, a rock sticks out a horizontal distance of 6.00m. With what minimum horizontal velocity must the cliff divers leave the top of the cliff if they are to miss the rock?​

Answers

Answer: 5.5

Explanation: its simply different from the others

If there are 60 min in 1hr, and in 1min there are 60 sec; Solve the following problem using dimensional analysis.: 3,800 hrs. to seconds(sec)

Answers

13680000 should be the number of seconds

how would the surface tension of water be increased​

Answers

Answer:

the presence of impurities on the surface of a substance directly affects the surface tension of a liquid

Explanation:

the surface tension of water will increase when highly soluble impurities are added

An inclined plane is 10.0 m long and 2.5 m high. What is the mechanical advantage?

Answers

Answer:

MA = 4

Explanation:

In order to solve this problem, we must use the definition of the ideal mechanical advantage, which tells us that it is equal to the relationship of the inclined distance over the height with respect to the level of the ground

MA = L / h

where:

MA = mechanical advantage

L = Length of the inclined plane = 10 [m]

h = elevation = 2.5 [m]

MA = 10/2.5

MA = 4

PLEASE HELP AND HURRRRY
A package is dropped from a plane flying at a constant speed. Neglecting air resistance, when the package hits the ground the horizontal location of the plane will....
A. Be behind the package
B. Depend on speed of package
C. Be directly over the package
D. Be in front of the package

Answers

Answer:

A. Be behind the package

Which statements describe vectors? Check all that apply.

Vectors have magnitude only.
Vectors have direction only.
Vectors have both magnitude and direction.
Vectors are drawn using a curved line.
Vectors are drawn using an arrow.

Answers

Answer: #3 and #5

Explanation:

What is a datum? A.) kinetic energy B.) reference point C.) potential energy D.) force

Answers

Answer:

C. Potenial energy

Explanation:

What layer of atmosphere does planes fly?

Answers

Answer: stratosphere

The stratosphere is the second to last layer of atmosphere to the Earth. It is about 40,000 feet above, and this is the range where planes fly. So, the answer is stratosphere.

Hope this helps!

Answer:

stratosphere

Explanation:

Planes fly in the stratosphere of the atmosphere.

The answer to the question is stratosphere.

Okay? Thank you so much for 25 points.

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