Write a paragraph about atoms. Tell what atoms are, size of atoms, what particles make up
atoms and how atoms are arranged

Answer:

this statement is true because I looked it up

Answer:

Current = 2 amps

Explanation:

Remark

The voltage of the circuit is 24 volts.

The Resistance Series circuit is

Givens

E = 24 volts

R = 12 ohms

Formula

E = I * R where

Solution

24 volts = 12 * I         Divide by 12

24/12 = I

I = 2 amperes.

Answer:

D 71.75

Explanation:

divide 2,009 miles by 28 hours

During a tennis volley, the force pair involved is the action-reaction forces.

When playing tennis and returning a volley, the force pair involved is the action and reaction forces. In the process of hitting the ball, the tennis racket exerts a force on the ball, which is the action force.

The ball, in turn, exerts an equal and opposite force on the racket, which is the reaction force.Both the racket and the ball experience the force of impact during the volley.

The force applied by the racket causes the ball to move forward, while the equal and opposite force applied by the ball pushes the racket back.

These two forces are referred to as action-reaction forces or force pairs. A force pair refers to a pair of forces that are equal in magnitude but opposite in direction.

These forces always act on different objects and occur simultaneously. In this scenario, the action force was exerted by the tennis racket while the reaction force was exerted by the ball.

Therefore, during a tennis volley, the force pair involved is the action-reaction forces.

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Explanation:

6 examples

radio wave

infrared ray

visible light ray

ultraviolet ray

microwave

gamma ray

3 which are useful

infrared ray

radio waves

gamma ray

Utilizing energy considerations, the kinetic energy is: Ek = 3/5KA².

In physics, an object's kinetic energy is the energy it has as a result of its motion. It is defined as the amount of work required to accelerate a body of a given mass from rest to a certain velocity. The body retains its kinetic energy after gaining it during acceleration until its speed changes.

Kinetic Energy has the following characteristics:

The computation of the above result is given as follows;

The total energy is given by the expression:

E = E\(_{k}\) + E\(_{p}\)

So, the energy is conserved, the total energy expression is:

E=1/2 KA²

Meanwhile, the potential energy is:

E\(_{p}\) = 1/2K(A/2)²

The Kinetic Energy is:

E\(_{k}\) = E - E\(_{p}\)

Thus,

E\(_{k}\) = 1/2(KA)² - 1/2K(A/2)²

= 3/8KA²

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Full Question;

To learn to apply the law of conservation of energy to the analysis of harmonic oscillators. Systems in simple harmonic motion, or harmonic oscillators, obey the law of conservation of energy just like all other systems do. Using energy considerations, one can analyze many aspects of motion of the oscillator. Such an analysis can be simplified if one assumes that mechanical energy is not dissipated. In other words, E=K+U=constant, where E is the total mechanical energy of the system, K is the kinetic energy, and U is the potential energy

The feature that is true of both solar and wind power is (b) Both power sources produce no greenhouse gas emissions during normal operation.

This makes them a more environmentally friendly alternative to traditional fossil fuels, which emit carbon dioxide (CO2) and other harmful gases during combustion.

However, the other options are not completely accurate. Solar and wind power can be intermittent, but this does not necessarily mean that they require a backup energy source. Energy storage technologies, such as batteries or pumped hydro storage, can be used to store excess energy generated during times of high production and release it during times of low production.

Furthermore, while solar and wind power currently supply a small fraction of global energy demand, it is important to note that their usage is increasing rapidly. In fact, renewable energy sources, including solar and wind power, are projected to be the fastest-growing energy source over the next few decades.

In conclusion, solar and wind power's most significant shared feature is their ability to operate without producing greenhouse gas emissions. While they do have other characteristics that are sometimes associated with them, these features are not always completely accurate and may not apply in every circumstance.

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The speed of the moving train is approximately 33.5 m/s.

The beat frequency is given by the difference in frequency between the two horns, which is equal to the Doppler shift in frequency due to the motion of the moving train. Using the formula for the Doppler effect, we can solve for the speed of the train:

\(f_b = f_s\dfrac{(v + v_o)}{(v + v_s)}\)

where \(f_b\) is the beat frequency, \(f_s\) is the horn frequency, v is the speed of sound, \(v_o\) is the observer's speed, and \(v_s\) is the speed of the source.

We know that \(f_s\) = 410 Hz and \(f_b\) = 35 Hz. The speed of sound in air at standard temperature and pressure is approximately 343 m/s. Since the observer is stationary, \(v_o\) = 0.

Solving for \(v_s\), we get:

\(v_s = \dfrac{(f_s + f_b)}{f_s - 1} \times v\)

\(v_s\) = ((410 Hz + 35 Hz) / 410 Hz - 1) * 343 m/s

\(v_s\) = 33.5 m/s

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Explanation:

Plastics with a density less than or equal to 1.025 g/mL will float in seawater, while plastics with a density greater than 1.025 g/mL will sink.

Here are some examples of plastic densities:

Polyethylene terephthalate (PET) has a density of approximately 1.38 g/mL, so it will sink in seawater.

Polypropylene (PP) has a density of approximately 0.9 g/mL, so it will float in seawater.

High-density polyethylene (HDPE) has a density of approximately 0.95 g/mL, so it will float in seawater.

Polystyrene (PS) has a density of approximately 1.05 g/mL, so it will sink in seawater.

Based on the above examples, we can see that plastics such as polypropylene and high-density polyethylene will definitely float in seawater, while others such as polyethylene terephthalate and polystyrene will definitely sink. Other types of plastics with densities close to 1.025 g/mL may float or sink depending on their exact density and the conditions of the water, such as temperature and salinity.

This equation relates the speed of the bullet (v) to the masses of the bullet (m) and the wood block (m₂), as well as the height (h) through which the system swings.

To determine the speed of the bullet (v), we can use the principle of conservation of mechanical energy in the system.

Initially, the system has only gravitational potential energy, which is converted into a combination of gravitational potential energy and kinetic energy after the collision. Assuming no energy is lost to other factors like friction or air resistance, we can equate the initial and final energies.

The initial energy is purely potential energy: m₂gh, where m₂ is the mass of the wood block, g is the acceleration due to gravity, and h is the height the system swings through.

The final energy is a combination of potential and kinetic energy: (m + m₂)gh + (1/2)(m + m₂)v², where m is the mass of the bullet and v is its velocity.

Equating the initial and final energies, we can solve for v:

m₂gh = (m + m₂)gh + (1/2)(m + m₂)v².

Simplifying the equation, we find:

v² = 2gh(m₂ - m) / (m + m₂).

Taking the square root of both sides, we get the expression for the speed of the bullet:

v = √[2gh(m₂ - m) / (m + m₂)].

This equation relates the speed of the bullet (v) to the masses of the bullet (m) and the wood block (m₂), as well as the height (h) through which the system swings.

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Answer:

8 v

Explanation:

power = watts = v i

                 36   = v (4.5)

                   v = 8 v

Answer:

background

Explanation:

Answer:

In this activity, you will complete a virtual experiment to identify the unknown compounds. Use the interactive on the assessment page to collect your data.

Pre-lab Questions:

1. What are the properties of ionic compounds?  They form Crystals

2. What are the properties of covalent compounds?

3. Which type of compound is salt? They are usually Gasses

4. Which type of compound is sugar? disaccharides

Hypothesis

Record your hypothesis as an “if, then” statement for the rate of dissolving the compounds:

If I apply heat the compounds Should dissolve faster

Variables

List the independent, dependent, controlled variables of the experiment.

The independent variables of Ionic compounds are Usually liquid or gasses at room temperature.

Materials

(Note: this is a virtual lab, no materials are needed. The items listed here are the types of items that could be used in a similar investigation.)

• a hot plate

• a thermometer

• a scale

• a measuring spoon

• water

• beakers

Procedure

Remember this is a virtual lab. You do not need to actually perform these steps, but follow along and collect the data!

1. Measure out 100 mL of water into three beakers and label them A, B, and C. Beaker C will be the control.

√

2. Then measure 50 grams of unknown compound A into beaker A and stir for one minute. Measure the amount of undissolved solute and record this in Table 1.

3. Then measure 50 grams of unknown compound B into beaker B and stir for one minute. Measure the amount of undissolved solute and record this in Table 1.

4. Next, we will test the boiling point of each solution. Place each beaker onto a hot plate.

5. When the solution boils, use a thermometer to record the temperature. Record the boiling point for each solution in Table 2.

Data Table 1

Record the amount of solute left after one minute of stirring.

Beaker Amount of Solute at Start (g) Amount of Solute at End (g)

Solution with Compound A 50 0 g

Solution with Compound B 50 15 g

Plain water in Beaker C 0 (control group) 0

Data Table 2

Record the the boiling point for each solution.

Beaker Temperature at Start (ºC) Temperature at Boiling Point (ºC)

Solution with Compound A 23 102.8

Solution with Compound B 23 108.7

Plain water in Beaker C 23 100

Analysis and Conclusion

1. Which compound dissolved more easily?

Compound A

2. Which compound had the lower boiling point?

Control C

3. Are the answers to 1 and 2 the same compound? What does this tell you about the strength of the bonds in this compound?

4. Which compound is the sugar?

5. Which compound is the salt?

Explanation:

Answer: B

Explanation:

The main advantage of the scientific method is that it is a systematic and objective way to acquire knowledge. The scientific method is a process for acquiring knowledge that has been used to great success in understanding the physical world. Astrology, on the other hand, is based on subjective interpretations of the positions of the stars and planets.

The scientific method is a process for acquiring knowledge that has been used to great success in understanding the physical world. It is based on the following steps:

1. **Observation:** The scientist observes a phenomenon and asks questions about it.

2. **Hypothesis:** The scientist proposes a hypothesis, or a possible explanation for the phenomenon.

3. **Experimentation:** The scientist designs experiments to test the hypothesis.

4. **Data analysis:** The scientist collects data from the experiments and analyzes it.

5. **Conclusion:** The scientist draws a conclusion about the hypothesis based on the data analysis.

The scientific method is an iterative process, meaning that the scientist may go back and forth between the different steps as needed.

Astrology, on the other hand, is a system of divination that attempts to predict future events by interpreting the positions of the stars and planets. Astrology is not based on the scientific method, and there is no evidence that it is a reliable way to predict the future.

The main advantage of the scientific method is that it is a systematic and objective way to acquire knowledge. The steps of the scientific method are designed to minimize bias and to ensure that the results of the experiments are repeatable. This makes the scientific method a reliable way to learn about the physical world.

Astrology, on the other hand, is based on subjective interpretations of the positions of the stars and planets. There is no scientific evidence to support the claims of astrology, and the results of astrological predictions are not repeatable.

In conclusion, the scientific method is a more reliable way to understand the physical world than astrology. The scientific method is based on a systematic and objective approach to acquiring knowledge, while astrology is based on subjective interpretations of the positions of the stars and planets.

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        According to the parallelogram rule, if two vectors are placed with the same initial point and then completed into a parallelogram, the directed diagonal that begins at the same position as the vectors equals the sum of the two individual vectors.

      A quadrilateral with opposite sides that are parallel and equal is known as a parallelogram. The interior opposite angles of it are equal. Additionally, the transverse angles on the same side must add up to 180 degrees or be complementary to one another.

      A unique variety of quadrilateral in which the opposing sides are parallel   and equal is known as a parallelogram. The length of each side added together makes up a parallelogram's perimeter, which may be computed using the following formula: Perimeter is equal to 2(a + b), where a and b are the parallelogram's two sides.

      In a parallelogram, the opposing sides are parallel to one another and have equal measurements. In a parallelogram, the opposing angles are equal. A parallelogram's internal angles add up to 360 degrees. A parallelogram's subsequent angles must be supplementary (180°).

     There are several related theorems, such as opposite sides are congruent, opposite angles are congruent, a parallelogram's diagonals bisect one another, and rectangles are parallelograms with congruent diagonals.

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An electrically charged object can be used to attract any object with an opposite charge.

This is due to the fundamental principle that opposites attract and repel in physics.

Electric charge is a fundamental property of matter that gives rise to electromagnetic interactions. An electric charge, whether positive or negative, produces an electric field that surrounds it. This field exerts a force on any other charge in its vicinity that is either attracted to or repelled from it. Electric charge is a fundamental property of matter that produces a variety of electric phenomena. When the charge is concentrated in a localized region of space, the object is electrically charged. When there is a net accumulation of charge in an object, it becomes electrically charged. An electrically charged object produces an electric field in its vicinity, which exerts a force on other charged objects. An electrically charged object can be used to attract objects with an opposite charge or repel objects with the same charge.

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Answer:

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. ... For instance, chemical energy is converted to kinetic energy when a stick of dynamite explodes.

Explanation:

Explanation:

70N-40N=30N

a)The electric field is zero at x = 0.77 m and x = 5.61 m. The electric field due to a point charge is given by the equation:

E = k * (q / r^2)

a) To find the value(s) of x where the electric field is zero, we need to consider the contributions from both charges. The electric field due to a point charge is given by the equation:

E = k * (q / r^2)

where E is the electric field, k is the Coulomb's constant (9 x 10^9 N·m²/C²), q is the charge, and r is the distance from the charge.

At any point on the x-axis, the total electric field E_total is the vector sum of the electric fields due to each charge.

For the electric field to be zero, the magnitudes of the electric fields due to each charge must be equal. Therefore, we have:

k * (3.47x10^(-6) C) / x^2 = k * (4.26x10^(-6) C) / (3 - x)^2

Simplifying and solving for x, we get:

3.47x10^(-6) / x^2 = 4.26x10^(-6) / (3 - x)^2

Cross-multiplying and rearranging terms, we have:

(3 - x)^2 * 3.47x10^(-6) = x^2 * 4.26x10^(-6)

Expanding and simplifying further, we obtain a quadratic equation:

0 = 4.26x10^(-6) * x^2 - (3 - x)^2 * 3.47x10^(-6)

Solving this quadratic equation, we find two solutions for x:

x ≈ 0.77 m

x ≈ 5.61 m

Therefore, the electric field is zero at x = 0.77 m and x = 5.61 m.

b) Direct answer: There is no finite value of x where the electric potential is zero.

The electric potential at a point due to a point charge is given by the equation:

V = k * (q / r)

where V is the electric potential, k is the Coulomb's constant (9 x 10^9 N·m²/C²), q is the charge, and r is the distance from the charge.

To find the value(s) of x where the electric potential is zero, we need to set up the equation:

k * (3.47x10^(-6) C) / x = k * (4.26x10^(-6) C) / (3 - x)

Simplifying and solving for x, we have:

3.47x10^(-6) / x = 4.26x10^(-6) / (3 - x)

Cross-multiplying and rearranging terms, we obtain:

(3 - x) * 3.47x10^(-6) = x * 4.26x10^(-6)

Expanding and simplifying further, we have:

0 = 4.26x10^(-6) * x - 3.47x10^(-6) * (3 - x)

Simplifying this equation, we get:

0 = 0.79x10^(-6) * x + 3.47x10^(-6)

This equation does not have a finite value of x that satisfies it. Therefore, there is no finite value of x where the electric potential is zero.

a) The electric field is zero at x = 0.77 m and x = 5.

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Answer:

0.16239316239316239316239

Explanation:

ang haba nang solve ko dito hehe

The magnitude of the linear impulse experienced by the passenger during this time is 421.2 kg·m/s and the average force experienced by the passenger is approximately 5.44 × 10^2 N.

(a) To calculate the magnitude of the linear impulse experienced by the passenger, we can use the equation:

Impulse = mass × change in velocity

Given:
Mass of the passenger (m) = 70.2 kg
Change in velocity (Δv) = 6.00 m/s - 0 m/s = 6.00 m/s

Substituting the values into the equation, we get:

Impulse = 70.2 kg × 6.00 m/s = 421.2 kg·m/s

Therefore, the magnitude of the linear impulse experienced by the passenger during this time is 421.2 kg·m/s.

(b) To find the average force experienced by the passenger, we can use the equation:

Average force = Impulse ÷ time

Given:
Impulse (I) = 421.2 kg·m/s
Time (t) = 0.774 s

Substituting the values into the equation, we get:

Average force = 421.2 kg·m/s ÷ 0.774 s = 544.0 N (rounded to three significant figures)

Therefore, the average force experienced by the passenger is approximately 5.44 × 10^2 N.

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The energy of a photon that has a frequency of 223 MHz is 9.32 × 10^−22 J.:Energy is the ability to do work.

Every photon has an energy E that is directly proportional to its frequency f. E is equal to hf, where h is Planck's constant (6.63 × 10^−34 J s), and f is the frequency of the photon.

The formula for calculating the energy of a photon is:E = hfwhere:E = Energy of the photonh = Planck’s constant (6.626 × 10^-34 J.s)f = frequency of the photon

The frequency of a photon is 223 MHz or 223 × 10^6 Hz. Convert MHz to Hz by multiplying the value by 10^6.223 MHz × 10^6 = 223 × 10^6 HzE = hf = (6.626 × 10^-34 J.s) × (223 × 10^6 Hz)E = 1.478 × 10^-26 J

Summary: A photon that has a frequency of 223 MHz has an energy of 1.478 × 10^-26 J.

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The magnitude of the related average acceleration will increase if the same change in velocity occurs in less time.

The rate at which a body's distance changes in relation to time is referred to as its velocity. The SI unit is meter per second ( m/s).

Acceleration is the rate at which speed and direction of velocity vary over time. When something moves faster or slower, it is considered to be accelerating. Motion on a circle accelerates even while the speed is constant because the direction is always changing.

Acceleration can be defined as the time rate of change in velocity

a = Δv / t

Now as t is in the denominator.

The smaller value of time will result in greater acceleration values with constant velocity change.

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Answer:

Cabinets are made to open one at a time so that there's not much of space taken up when all the drawers are open. Hope this helps.

________b_____ 7 km east

|

| 2km north.

|a

|

°

pythagorean theorem : ✓a² + b² = c²

c² = a² + b² = 4 + 49 = 53

c = ✓53 km

displacement = c = ✓53 km

distance = 10 + 3 + 2 = 15 km

The Complete Question:

How do I get one solution of 7x + 69 = 1 ?

Value of x in 7x + 69 = 1 is ( - 9.71 ).

Since the degree of variable is 1, the equation will have only one solution.

The degree of variable is defined at the value of power of the variable.

Using Algebra Equation,

= 7x + 69 = 1

= 7x = 1 - 69

= 7x = ( - 68)

= x = ( - 68) / 7

= x = ( - 9.71 )

Thus, the value of x in 7x + 69 = 1 is ( - 9.71 ) and this is the only solution to single degree algebraic equation.

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Answer:

The car took 3 hours to travel 180 miles

Explanation:

Constant Speed Motion

An object travels at constant speed if the ratio of the distance traveled by the time taken is constant.

Expressed in a simple equation, we have:

\(\displaystyle v=\frac{d}{t}\)

Where  

v = Speed of the object

d = Distance traveled

t = Time taken to travel d.

From the equation above, we can solve for t:

\(\displaystyle t=\frac{d}{v}\)

The car travels at v=60 mi/h for a distance of d=180 miles. The time taken is:

\(\displaystyle t=\frac{180\ mi}{60\ mi/h}\)

t = 3 hours

The car took 3 hours to travel 180 miles

Given that a sprinter starting from rest on a straight, level track is able to achieve a speed of 12 m/s in 6.0 s. We are supposed to find the sprinter's average acceleration in m/s^2 (meters per second squared).

Average acceleration is defined as the rate at which an object changes its velocity. It is equal to the change in velocity divided by the time taken. Average acceleration = Change in velocity ÷ Time taken

Here, the change in velocity is equal to the final velocity minus the initial velocity. The initial velocity is zero because the sprinter started from rest.

Final velocity, v = 12 m/s

Time taken, t = 6.0 s

Change in velocity = Final velocity - Initial velocity

= v - u = 12 - 0 = 12 m/s

Average acceleration = Change in velocity ÷ Time taken

= 12 ÷ 6= 2 m/s^2

Therefore, the sprinter's average acceleration is 2 m/s^2 (meters per second squared).

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