Anyone get this can you please help me, can you also please do it step by step

A match is being is an example of multiple energy transformations

Answer:

19.32g/cm³

Explanation:

Answer: incandescent light bulbs emit generally continuous thermal spectra. CFLs and LEDs emit the light in the broad bands near specific wavelengths.

Explanation:

Incandescent light bulbs emit generally continuous thermal spectra. CFLs and LEDs emit the light in the broad bands near specific wavelengths.

Incandescent light bulbs emit generally continuous thermal spectra. CFLs and LEDs emit the emission line spectra with specific wavelengths.

Incandescent light bulbs emit absorption spectra similar to the spectra of stars. CFLs and LEDs emit the emission line spectra with specific wavelengths.

Answer:

The volume of water displaced by the raft is 0.233 m³

Explanation:

The question relates to Archimedes' principle which states that the buoyant force experienced by an object immersed in a fluid is equal to the weight of (the force of gravity on) the displaced fluid

The given parameters are;

The combined mass of the person and the raft, m = 233 kg

The liquid on which the raft is located = Water

The density of water, \(\rho _{water}\) = 1000 kg/m³

Weight = Mass, m × g

Where;

m = The mass of the object

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

Given that the raft is on the surface of the water (floating), the buoyant force is equal to the combined weight of the person and the raft = 233 kg

The combined weight of the person and the raft, \(W_{combined}\) = 233 kg × 9.8 m/s² = 2,283.4 N

Therefore;

The buoyant force = 2,283.4 N = The weight of the water displaced

The mass of the water displaced, \(m_{water}\), = 2,283.4 N/(9.8 m/s²) = 233 kg

Density = Mass/Volume

The volume of water displaced by the raft = The mass of the water displaced/(The density of the water) = 233 kg/(1,000 kg/m³) = 0.233 m³.

Answer:

the volume displaced by the raft = 0.233 m3

Explanation:

correct for Acellus

Answer:

applied force

Explanation:

any force where you push or pull is always applied force.

The energy stored in the magnetic field of the solenoid is 1.9 × 10^-4 J, to two significant figures.

The energy stored in a magnetic field can be calculated using the equation:

E = (1/2) L I^2

where E is the energy, L is the inductance of the solenoid, and I is the current flowing through it. In this case, we are given the magnetic field inside the solenoid, but we need to find the current and inductance.

The inductance of a solenoid can be calculated using the equation:

L = (μ₀ N^2 A)/l

where L is the inductance, μ₀ is the permeability of free space (4π × 10^-7 T m/A), N is the number of turns in the solenoid, A is the cross-sectional area, and l is the length of the solenoid. In this case, N = 1 (since there is only one coil), A = πr^2 = π(0.01 m)^2 = 3.14 × 10^-4 m^2, and l = 0.34 m. Therefore:

L = (4π × 10^-7 T m/A)(1^2)(3.14 × 10^-4 m^2)/(0.34 m) = 3.7 × 10^-4 H

Now we can use the equation for energy:

E = (1/2) L I^2

to find the current. Rearranging the equation gives:

I = √(2E/L)

Substituting the values we know:

0.75 T = μ₀NI/l

I = √(2E/L) = √(2(0.75 T)(3.7 × 10^-4 H)/(4π × 10^-7 T m/A)) = 1.6 A

Finally, we can calculate the energy:

E = (1/2) L I^2 = (1/2)(3.7 × 10^-4 H)(1.6 A)^2 = 1.9 × 10^-4 J

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Answer:

i dont think so but it could depend on he size of the rock and how far it was dropped

Explanation:

Since the slowest instruction in the SCA executes in 12.5 ns, the maximum system clock frequency is 80 MHz

To answer the question, we need to know what frequency is.

Frequency is the number of oscillations per second of a wave.

It is given by f = 1/T where T = period of wave

Now, given that the slowest instruction in the SCA executes in t = 12.5 ns, we need to calculate maximum system clock frequency, f.

So, f = 1/t

= 1/12.5 ns

= 1/(12.5 × 10⁻⁹ s)

= 1/12.5 × 10⁹ Hz

= 0.08 × 10⁹ Hz

= 80 × 10⁻³ × 10⁹ Hz

= 80 × 10⁶ Hz

= 80 MHz

So, the maximum system clock frequency is 80 MHz

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a) The magnitude of the net magnetic force that acts on the particle is 2.18 x 10-6 N.
b) The angle that the net force makes with respect to the x axis is 63.8°.

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field.Magnetic Field is the region around a magnetic material or a moving electric charge within which the force of magnetism acts. A pictorial representation of the magnetic field which describes how a magnetic force is distributed within and around a magnetic material.

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If 100% electric vehicle penetration is achieved in the U.S., oil refineries might still exist for the production of products such as diesel and jet fuel. In the event that 100% electric vehicle penetration is achieved in the United States, oil refineries might still exist and produce some products that are necessary for society.

Despite the increased use of electric vehicles, these refineries might still exist as they will still have to produce diesel, jet fuel, and other products that might not be replaceable by electric vehicles.

For instance, planes and ships might still be reliant on the use of fossil fuels. Hence, oil refineries will still be required to produce the fuel used by these vehicles. Additionally, the production of lubricants and other petroleum-based products might still be necessary.

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The horizontal component of force P is 216.5 N and the vertical component is 125 N.

Since we are given the magnitudes of the forces P and Q and the angles they make with the horizontal axis, we can use trigonometry to find their horizontal and vertical components.

Let's first focus on force P, which has a magnitude of 250 N and makes an angle of 30 degrees with the horizontal axis. We can break this force down into its horizontal and vertical components using the following equations:

Horizontal = P * cos(theta)

Vertical = P * sin(theta)

where P is the magnitude of force P and theta is the angle it makes with the horizontal axis.

Substituting the given values, we get:

Horizontal = 250 N * cos(30 degrees) = 216.5 N

Vertical = 250 N * sin(30 degrees) = 125 N

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The angular acceleration of the crank arm is 0.96 rad/s^2

What is angular acceleration?
In physics, angular acceleration is the rate at which angular velocity changes over time. Naturally, there are two types of angular acceleration, referred to as spin angular acceleration as well as orbital angular acceleration, just as there are two types of angular velocity, notably spin angular velocity as well as orbital angular velocity. As opposed to orbital angular acceleration, which is the angular acceleration of the a point particle about a fixed origin, spin angular acceleration describes the angular acceleration of the a rigid body as to its centre of rotation. The unit of measurement for angular acceleration is the angle per unit time squared, and it is typically denoted by the symbol alpha (). When the angular speed changes from increasing counterclockwise to decreasing clockwise in two dimensions, the pseudoscalar known as angular acceleration is assumed to have a positive sign.

The angular acceleration of the crank arm is:
a = (88rpm - 60rpm) / 15s = 0.96 rad/s^2

The angular velocity of the crank arm after 15 seconds is:
ω = 60rpm + (0.96rad/s^2) * 15s = 113.4 rpm

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(a) The initial temperature is 373.95 K.

(b) The final temperature is 546.15 K.

(c) The total internal energy change of the fluid during this process is 515.4 kJ.

(d) The process can be represented as an isochoric heating process on the P-v diagram and as an isobaric expansion process on the T-v diagram.

(a) To find the initial temperature, we can use the saturated steam tables. At a pressure of 200 kPa, the corresponding saturation temperature is 373.95 K.

(b) Since the volume doubles, the process is an isochoric (constant volume) heating process. Using the ideal gas law, we can determine the final temperature. The initial and final volumes are related by the equation V_final = 2V_initial. Since the mass remains constant, the specific volume (v) is inversely proportional to the density (ρ). Therefore, ρ_final = ρ_initial/2. Using the ideal gas law, we can calculate the final temperature to be 546.15 K.

(c) The total internal energy change can be calculated using the equation ΔU = mC_vΔT, where m is the mass of the fluid and C_v is the specific heat at constant volume. Given the mass as 0.5 kg, the specific heat of water at constant volume, and the temperature change, we can find that the total internal energy change is 515.4 kJ.

(d) On the P-v diagram, the process is represented as a vertical line at 200 kPa, indicating constant pressure. On the T-v diagram, the process is shown as an upward-sloping line, indicating an isobaric expansion process. The initial state is represented as a point on the left, and the final state is represented as a point on the right. The path between the initial and final states is a straight line connecting these two points.

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Answer:

Velocity

Explanation:

Answer:

a moderate base

Explanation:

Milk of magnesia is popularly known as magnesium hydroxide. Magnesium hydroxide Mg(OH)₂ is used as an anti-acid in toothpaste and medically as a mild laxative.

Its pH values range between 10- 11 on the pH scale.

A solution with pH value of 7 is neutral(i.e. neither acidic nor basic.

A pH value which is less than 7 is acidic while a pH value greater than 7 is basic.

For a pH value between 12 -14 on the pH scale is said to be a strong base.

Since Milk of magnesia Mg(OH)₂ pH values ranges between 10- 11 on the pH scale, it is known to be moderately basic.

The crew aboard a small sailboat should be briefed to follow specific instructions when their boat is being towed.

When a small sailboat is being towed, the crew should adhere to the following instructions:

Secure all loose items: The crew should secure any loose items on the boat to prevent them from shifting or falling overboard during the towing process. This includes stowing equipment, sails, and personal belongings in appropriate storage spaces.

Maintain communication: The crew should establish clear communication with the towing vessel to ensure a smooth towing operation. They should follow the instructions given by the towing crew and relay any concerns or issues promptly.

Stay alert and ready to assist: While being towed, the crew should remain vigilant and ready to assist if needed. They should be prepared to help with maneuvers, follow the towing vessel's directions, and be mindful of potential hazards in the water.

By following these guidelines, the crew of a small sailboat can contribute to a safe and successful towing operation, minimizing risks and ensuring a smooth journey.

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The velocity of the car after acceleration is 80m/s.

To calculate the velocity of the car after acceleration, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the velocity of the car after acceleration is 80m/s.

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Answer:

About 59.83 kg

Explanation:

The formula for kinetic energy is \(KE = \frac{1}{2}mV^2\), where KE = Kinetic Energy in Joules (J), m = mass in kilograms (kg), and V = Velocity in meters per second (m/s).

In this problem, we are given the Kinetic Energy amount as 193 Joules and the Velocity as 2.54 m/s. Let's plug it into our equation

Now, let's solve this equation.

Step 1: Simplify both sides of the equation.

Step 2: Divide both sides by 3.2258.

Answer:

often Positive and negative charges balance each other which gives an overall neutral charge. if they are unbalanced then it will result in static electricity.

The current through the 2Ω resistor is 9.5A

The terminal voltage is 10.8 V

a) The voltage V across 8 Ω resistor is V = I*R = 8*0.5 = 4V

the current through 16Ω resistor is then I = V/R = 4/16 = 0.25 A

the current through 20Ω resistor is then I = current through 8Ω resistor + current through 16Ω resistor = 0.75 A

voltage across 20Ω is V = I*R = 0.75*20 = 15 V

the source voltage is Vs = V8 + V20 = 4+15 = 19 V

therefore the current through 2Ω resistor is

I = V/R = 19/2 = 9.5 A

b) The terminal voltage is

Vterminal = VR = I*R = 0.450*24 = 10.8 V

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The water will eventually become colored as a result of the molecules' random movement. The diffusion process will be accelerated by agitation.

Extreme motor activity or interior restlessness, sometimes known as agitation, can be a sign of an illness or be a normal physiological response to a circumstance. The most common reasons for agitation are being in a new environment, using or withdrawing from drugs, having alcohol in your system, and general medical issues.

It can start as a result of events, words, deeds, or in some situations, for unknown reasons. Although feeling irritated occasionally is common (for example, in reaction to stress from work or school), it can occasionally be an indication of an underlying medical condition.

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The bullet takes 0.0025 seconds to pass through the wooden plank of 5 cm thickness when it is traveling horizontally with an initial speed of 30 m/s and a final speed of 10 m/s.

The time taken by the bullet to pass through the wooden plank can be determined using the equation of motion for constant acceleration.

Given:
Initial speed (u) = 30 m/s

Final speed (v) = 10 m/s

Distance (s) = 5 cm = 0.05 m

To find the time taken (t), we need to calculate the acceleration (a) first. We can use the equation:

v² = u² + 2as

Rearranging the equation, we have:

a = (v² - u²) / (2s)

Substituting the given values:

a = (10² - 30²) / (2 * 0.05)

Simplifying the expression:

a = (-800) / (0.1)

a = -8000 m/s²

The negative sign indicates that the acceleration is in the opposite direction of the initial velocity.

Next, we can use the equation of motion:

v = u + at

Substituting the values:

10 = 30 + (-8000) * t

Simplifying the equation:

-8000t = -20

Dividing by -8000:

t = 20 / 8000
t = 0.0025 s

Therefore, the time taken by the bullet to pass through the wooden plank of 5 cm thickness is 0.0025 seconds.


To find the time taken by the bullet to pass through the wooden plank, we need to calculate the acceleration first using the equation of motion.

By rearranging the equation and substituting the given values, we can find the acceleration.

Then, using the equation of motion again, we can solve for time.

The negative sign in the acceleration indicates that it is in the opposite direction of the initial velocity.

The resulting time is 0.0025 seconds.

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Answer:

A) 0.25 Hz

B) 6 m

C) 1.5 m/s

Explanation:

The number of waves that pass a certain spot every 20 seconds = 5 waves

The distance between the crest = 6 m

A) The frequency of the wave, f = The number of cycles per second = 5/20 = 0.25 per second = 0.25 Hz

B) The wavelength of the wave, λ = The distance between crests = 6 m

C) The velocity of the wave, v = f × λ = 0.25/s × 6 m = 1.5 m/s.

Answer:

C’est exact!! Excellent travail!

Explanation:

Answer:

A chemical change occurred, so even if Cash heats it, the white solid will remain

Explanation:

There are two types of changes that occur in Chemistry viz; physical change and chemical change. Physical changes are those changes do not involve any change in the chemical composition of the substances involved while a chemical change involves a change in chemical composition.

In a chemical change, there are characteristics signs such as formation of gaseous bubbles, solid precipitates etc. as the information in this question depicts. According to this question, Cash mixes two clear liquids together which results in the formation of bubbles and a white solid that settles at the bottom. Hence, THIS REPRESENTS A CHEMICAL CHANGE

Most chemical changes are usually irreversible i.e. they don't return to their original form. Hence, even if Cash heats it, the white solid will remain.

Answer:

A chemical change occurred, so even if Cash heats it, the white solid will remain

The time it takes the ball to stay in the air is 2.33 seconds.

Time of flight is the total time taken to complete the projectile motion.

To calculate how long it takes the ball to stay in the air, we use the formula of time of flight below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the time of flight is 2.33 seconds.

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Raw sewage contains microorganisms that can harm ecological systems as well as make people and animals ill. In addition to bacteria and viruses, raw sewage frequently include germs that are harmful to human health. Additionally, there are additional substances in raw sewage that are just poisonous to fish, shellfish, mammals, and other aquatic life. Consequently, sewage pollution that enters a body of water sets off a negative cascade.

The definition of diversity is the quality of including or consisting of several constituents .The development of workplace diversity models since the 1960s has given rise to a strong commercial rationale for diversity. The initial paradigm for diversity in the United States was based on affirmative action and the equal opportunity employment goals put in place by the Civil Rights Act of 1964. The principle of equal employment opportunity was predicated on the notion that anybody who was intellectually or physically prepared for a particular profession might work toward (and perhaps achieve) getting the stated position without experiencing identity-based discrimination. This compliance-based strategy gave birth to the notion that the only reason a person who was different from the majority group was employed into a corporation was for show.

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Answer:

i) E1 = -13.6/1² = -13.6eV

E2 = -13.6/2² = -3.4 eV

E3 = -13.6/3² = -1.51 eV

E4 = -13.6/4² = -0.85 eV

E5 = -13.6/5² = -0.544 eV

E6 = -13.6/6² = -0.377 eV

E∞ = 0

ii) Lyman series obtained when there is electron transition from n = 2,3,4,5,6... to n1=1

Baler series obtained when there is a transition from n = 3,4,5,6.. to n1 = 2

iii) E ( ionisation) = E∞ - E1 = 0 - (- 13.6) = 13.6 eV

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Electrostatics is the study of electric charges at rest. When there is no current, it refers to stationary charges. Electrostatic phenomena are due to the presence of one or more electric charges, the distribution of charges in a system, and their interactions. There are two types of charged particles: positive and negative.

Electrostatics occurs when two oppositely charged particles (such as electrons and protons) are separated by a distance. The combination of charged spheres and separation distance that produces an electrostatic is two oppositely charged spheres separated by a distance. Electrostatics is based on the law of attraction and repulsion between two opposite charges and like charges, respectively.

According to Coulomb's law, the force between two charges is proportional to their magnitudes and inversely proportional to the square of the distance between them.

The electrostatic force between two charges can be calculated using the following equation: F = kq1q2/r2, where F is the electrostatic force between two chargesq1 and q2 are the magnitudes of the charges, r is the distance between the charges, k is Coulomb's constant (9 x 109 Nm2/C2).

The combination of charged spheres and separation distance that produces an electrostatic is two oppositely charged spheres separated by a distance.

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The maximum frequency affected by the blackout is approximately 7.943 MHz, and the location of the blackout is Laurel, Maryland, which is located at approximately 39.09°N, 76.85°W.

HF radio blackouts are a phenomenon that impacts High Frequency (HF) radio waves by causing them to become inaudible or distorted. The severity of an HF radio blackout is determined by a number of factors, including the frequency of the radio waves, the time of day, and the solar zenith angle.

Let us calculate the maximum frequency affected by the blackout: According to the model, the frequency of the radio wave is inversely proportional to the power of 1.24. So we can write:f∝(P)-1.24, Where f is the frequency of the radio wave, and P is the power of the blackout. So if a blackout occurs at 15 MHz, then we can find the power of the blackout:P=15^(1.24)P=26.98

So the power of the blackout is approximately 26.98.Next, we need to calculate the maximum frequency affected by the blackout. We can do this by using the formula: f∝(P)-1.24, where f is the frequency of the radio wave, and P is the power of the blackout. So if the power of the blackout is 26.98, then we can find the frequency of the radio wave:f=26.98^(-1/1.24)f=7.943MHz

So the maximum frequency affected by the blackout is approximately 7.943 MHz. Now let us find the location of the blackout: According to the question, the blackout occurred at 10 AM Eastern Daylight Time over Laurel, Maryland on September 10th. So the location of the blackout is Laurel, Maryland, which is located at approximately 39.09°N, 76.85°W.

Therefore, the maximum frequency affected by the blackout is approximately 7.943 MHz, and the location of the blackout is Laurel, Maryland, which is located at approximately 39.09°N, 76.85°W.

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