A 8 kg object is pushed with a force of 17.9 N to the west and 22.1 N to the south. What is the acceleration acting on the object?

​

The total number of significant digits in the given number is five. If the books are measured in packets of 10, the number of significant digits reduces to two.

The given data is: Total number of books in the library = 57,000. We are to determine how many significant digits are there in the result? For this, let us define what are significant digits: Digits that are used to communicate meaning or accuracy of measurements are known as significant digits. In other words, the digits that carry meaning contributing to its measurement uncertainty are called significant digits. It is used to determine the accuracy of the results. In this question, the total number of books in the library is given as 57,000. As there are five non-zero digits in the given number, there are five significant digits in the result. Will the result change if the books are measured in the packet of 10? If the number of books is measured in the packet of 10, then there will be a change in the number of significant digits. When we express 57,000 in the packet of 10, we get: 57,000 = 5.7 × 10^4. Now, there are only two significant digits in the result (5 and 7), and hence the result changes.

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First, let's calculate the power used by the motor with the formula below:

Now, let's multiply the power by the time to find the energy consumed:

It produces oceanic crust,

It is false that the density of air in a typical classroom is closer to 1.2 kg/m3 at room temperature and atmospheric pressure.

The density of air in a typical classroom can vary depending on factors such as temperature, humidity, and altitude. However, a commonly cited value for the density of dry air at sea level and standard temperature and pressure (STP) conditions (i.e., 0 degrees Celsius and 1 atm pressure) is approximately 1.2 kg/m3. At room temperature (~20-25 degrees Celsius), the density of air in a classroom would be slightly less than this value due to thermal expansion, but it would still be much greater than 0.08 kg/m3.

Density is a measure of how much mass is present in a given volume. Since air is composed of molecules that have mass, it does have a nonzero density. The value of air density can be important in various scientific and engineering applications, such as in the design of ventilation systems or the analysis of fluid flow.

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Answer:

The difference in distance from the speakers is 5.2 - 3.5 = 1.7 m

The listener would be 1/2 wavelength out of phase with the speakers

1/2 y = 1.7 m    where y is the wavelength

y = 3.4 m       the required wavelength

f = v / y = 340 m/s / 3.4 m = 100 / sec     lowest frequency  

Answer:

100.8

Explanation:

Trust :)

Answer:

hydrochlorine +12÷B to the power of 4 -× y reapeated zminus 2 to the power of 9

Answer:

Explanation:

a ) The motion is one dimensional , so motion is along x - axis , starting from origin ( 0 , 0 )

b ) Initial velocity is 18.5 m /s when boat is situated at origin . When he displaces by 250 m along x axis and his position is ( 250 , 0 ) along x axis , his velocity becomes 36 m /s . Both his velocity and acceleration is along x - axis.

c ) Initial velocity vi = 18.5 m /s

final velocity vf = 36 m/s

Displacement x  = 250 m

Acceleration a = ?

Most appropriate formula is given below .

vf² = vi² + 2 a x

2ax = vf² - vi²

x =  ( vf² - vi² ) / 2 a

d )

Putting the given values

36² - 18.5² / 2 x 250

= 1296 - 342.25 / 500

= 1.9 m /s².

f ) Time interval t = ?

Required formula

vf = vi + at

t = (vf - vi ) / a

Putting the values

t = (30 - 18.5) / 1.9

= 6.05 second .

Answer:

5) A 200n

F net=0n

6) B 50n

F net=0n

7) C 200n

F net= 900n, up

8) D 80n

F net=60n,left

9) E 300n

F net=60n,left

10)???

11) G 20n

F net=30n,Right

__________________________________

All the answers is hard

correct me if i'm wrong

Answer:

(a) 0 (b) \(F=1.67\times 10^9\ N\)

Explanation:

Given that,

Mass of a supertanker, \(m=1.7\times 10^8\ kg\)

The engine of a generate a forward thrust of, \(F=7.4\times 10^5\ N\)

(a) As the supertanker is moving with a constant velocity. We need to find the magnitude of the resistive force exerted on the tanker by the water. It is given by :

F = ma, a is the acceleration

For constant velocity, a = 0

So, F = 0

(b) The magnitude of the upward buoyant force exerted on the tanker by the water is equal to the weight of the ship.

F = mg

\(F=1.7\times 10^8\times 9.8\\\\F=1.67\times 10^9\ N\)

Hence, this is the required solution.

After three half-lives, 1/8 (or 0.125) of the parent isotope remains. Thus, 0.125 times the parent atoms. The daughter isotope would be equivalent to the remaining parent isotope, 0.125 times the original number of parent atoms.

After three half-lives, the parent isotope has exponentially decayed, forming the daughter isotope. Each half-life reduces the parent isotope by half and increases the daughter isotope. Three half-lives have passed, reducing the parent isotope to 1/8 of its initial level. The rock sample would have 1/8 of the parent isotope.

The daughter isotope would have accumulated during decay. After three half-lives, the daughter isotope would have reached 3/8 of the parent isotope as each half-life creates one-half of it. After three half-lives, the rock sample would have 1/8 of the parent isotope and 3/8 of the daughter.

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Answer:

..

Explanation:

Coordinate adjectives are adjectives that describe the same noun equally. They should be separated with commas. In this sentence, both red and round are describing the ball. The correct answer is, "The red, round ball is Adley's favorite toy to play with."

To find the electric potential energy of a 4.0-μC charge at a point with an electric potential of 20 V, you can use the following formula:

Electric Potential Energy (EPE) = Charge (Q) × Electric Potential (V)

In this case, Q = 4.0 μC and V = 20 V.

Remember to convert the charge to coulombs by multiplying by \(10^-6\):

Q = 4.0 ×\(10^-6\)

Now, plug in the values:

EPE = (4.0 × 1\(10^-6\) C) × (20 V)

EPE = 8 ×\(10^-5\) J (joules)

So, the electric potential energy of the 4.0-μC charge at that point is 8 × \(10^-5\) joules.

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Plugging in these values gives an electric field of -1.07 x 10-8 N/C.

Electric field is a physical phenomenon that occurs when an electric charge is present in a space.

The electric field of a -3.2 nC charge from a distance of 6 m can be calculated using the equation E = kQ/r2, where k is Coulomb's constant (8.99x109 Nm2/C2), Q is the charge of the particle (in this case, -3.2 nC), and r is the distance from the particle (6 m). Plugging in these values gives an electric field of -1.07 x 10-8 N/C.

2. The electric field of a +3.2 nC charge from a distance of 6 m can be calculated using the same equation as in #1, E = kQ/r2, where k is Coulomb's constant (8.99x109 Nm2/C2), Q is the charge of the particle (in this case, +3.2 nC), and r is the distance from the particle (6 m). Plugging in these values gives an electric field of +1.07 x 10-8 N/C.

3. To find the distance between two +3.4 μC particles that experience a force of 0.01 C/m, we can use the equation F = kQ1Q2/r2, where k is Coulomb's constant (8.99x109 Nm2/C2), Q1 and Q2 are the charges of the two particles (in this case, +3.4 μC each), and r is the distance between them. Plugging in these values gives a distance of 5.81 m.

4. To find the distance between two -6 μC particles that experience a force of 0.03 C/m, we can use the same equation as in #3, F = kQ1Q2/r2, where k is Coulomb's constant (8.99x109 Nm2/C2), Q1 and Q2 are the charges of the two particles (in this case, -6 μC each), and r is the distance between them. Plugging in these values gives a distance of 1.31 m.

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The speedometer of a car measures instantaneous speed. It tells you the speed of the car at any given moment in time.

The speedometer of a car measures instantaneous speed. This means it gives the reading of the speed at any given moment in time.

Main part: The speedometer of a car measures instantaneous speed. It tells you how fast you are driving at that particular moment. The speedometer gives you a direct reading of how fast your vehicle is traveling. It measures the vehicle's speed at any given moment in time, rather than calculating the average speed of the entire journey.

A speedometer is attached to a vehicle's wheels to measure its speed. As the wheels turn, the speedometer calculates the speed at which they are turning. Inside the speedometer, there is a component called a speedometer cable. This component is connected to the back of the speedometer's drive mechanism. The other end of the cable is connected to a gear that is inside the transmission or the transfer case. When the vehicle is moving, the driveshaft turns the gears in the transmission or transfer case. The gear connected to the speedometer cable also turns, causing the cable to rotate. The rotation of the cable creates a magnetic field that drives the speedometer's magnetometer, which is connected to the speedometer pointer. This causes the pointer to move along the dial and show the speed of the vehicle on the speedometer.

Conclusion: In conclusion, the speedometer of a car measures instantaneous speed. It tells you the speed of the car at any given moment in time.

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Answer:

Cant say for sure, its been a while sense ive done this, but im almost certain its 70

Explanation:

Take the zero off of your 10 s

Then go 7 m/s x 1 s

Which equals 7

Add the zero back to the end of your answer

10 -- 0 = 1 x 7 = 7 ++ 0 = 70

(PS, two of the same sign is just adding a number to the end of your original answer, that is not what it actually stands for in mathematical terms but that is what i'm using to make it clearer as to whats happening)

I'm not too good at explaining and formulas but i hope this helped

Answer:

B

Explanation:

mass is the amount of matter present in any object or body.

here in the option b, it says they each contain the same amount of matter,

which means they each has the same mass.

True. A state function, by definition, does not depend on the system's past or future. It only relies on the current state or condition of the system.

A state function is a property that is determined solely by the initial and final states of the system, regardless of the path taken to reach those states. Examples of state functions include temperature, pressure, volume, internal energy, enthalpy, entropy, and Gibbs free energy.

The independence from the system's past or future is a fundamental characteristic of state functions. It means that the value of a state function remains the same regardless of how the system arrived at its current state or what happens to it in the future. This property allows for the convenient analysis of thermodynamic processes and the calculation of changes in system properties using state functions.

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The mass of the object attached to the spring is approximately 0.119 kg.

To determine the mass of the attached object using the spring, we can utilize Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement of the spring from its equilibrium position.

Hooke's Law can be expressed as:

F = k * x

Where:

F is the force exerted by the spring,

k is the spring constant, and

x is the displacement of the spring from its equilibrium position.

The frequency of the spring's motion (f) can be related to the mass (m) and the spring constant (k) using the equation:

f = (1 / (2π)) * √(k / m)

Rearranging this equation, we can solve for the mass:

m = (k / (4π² * f²))

Given:

Spring constant (k) = 3 N/m

Frequency (f) = 0.8 Hz

Substituting these values into the equation, we get:

m = (3 N/m) / (4π² * (0.8 Hz)²)

Calculating this expression:

m ≈ 0.119 kg

Therefore, the mass of the object attached to the spring is approximately 0.119 kg.

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The mass attached to the spring is approximately 0.238 kg.

To find the mass attached to the spring, we can use the formula for the angular frequency (ω) of a mass-spring system:

ω = √(k / m),

where ω is the angular frequency, k is the spring constant, and m is the mass.

Given:

k = 3 N/m (spring constant),

f = 0.8 Hz (frequency).

First, let's convert the frequency from Hz to radians per second (rad/s):

ω = 2πf = 2π(0.8) ≈ 5.03 rad/s.

Now, we can solve the formula for m:

ω = √(k / m),

m = k / ω^2,

m = 3 N/m / (5.03 rad/s)^2.

Calculating the value:

m ≈ 3 N/m / (5.03 rad/s)^2 ≈ 0.238 kg.

Therefore, the mass attached to the spring is approximately 0.238 kg.

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\(30 \Omega || 40\Omega ~ \text{and}~50\Omega || 30 \Omega\\\\\text{Equivalent resistance of the whole circuit,}\\ \\R_{eq} = \left(\dfrac{30 \times 40}{30+40} \right) + \left( \dfrac{50 \times 30}{50+30} \right)\\\\\\~~~~~~=\dfrac{1005}{28}~ \Omega\\\\\text{By Ohm's law,}\\\\~~~~~V=IR\\\\\implies I = \dfrac{V}{R} = \dfrac{9}{\tfrac{1005}{28}} = \dfrac{252}{1005}= \dfrac{84}{335}~ A\\\\ \text{Voltage drop between points A and B,}\\\\V_{AB} = IR_{AB}\\\\\\\)

      \(~~~~~~~=\dfrac{84}{335} \cdot \left(\dfrac{30 \times 40}{30+40} \right)\\\\\\~~~~~~~= \left( \dfrac{84}{335} \right) \left(\dfrac{120} 7 \right)\\\\\\~~~~~~~=\dfrac{288}{67}~V\\\\\\~~~~~~~=4.298~V\)

As the photons travel from the center to the surface, their energy decreases; they cool to a temperature of about 6000 K, which is similar to the sunlight we observe.

Conduction is quite ineffective in this situation, but convection does contribute—it begins at the outer core. The outer core provides energy to the inner convection cells, which then interact with the outer convection cells.

However, radiation is the main cause. It takes a photon a long time to reach the surface because after it emits, hits something, and is excited by that something, the photon is then released once more in an arbitrary direction.

What does radiation signify from a physics perspective?

Radiation is the name for energy that comes from a source and travels through space at the speed of light.

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The situation that would result in the most clearly separated images of the stars would be when the stars have the largest difference in their wavelengths of light emitted.

This is because the diffraction pattern produced by the telescope is determined by the wavelength of the light being observed.

When two stars emit light with very different wavelengths, their diffraction patterns will be more distinct and separated. On the other hand, if the two stars emit light with similar wavelengths, their diffraction patterns will overlap and their images will appear blurred and less separated.

In order to obtain the most clearly separated images of two close stars, it would be best to observe them when they emit light at different wavelengths.

This can be achieved by using a filter that selectively allows only the light emitted by one star to pass through, or by observing the stars at different times when their emissions are different.

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For an aqueous solution to conduct an electric current, it must contain dissolved ionic compounds that dissociate into free ions. These ions act as mobile charge carriers, increasing the conductivity of the solution.

To conduct an electric current in an aqueous solution, ions must be present. An aqueous solution is a solution in which water is the solvent. When certain substances, such as salts or acids, dissolve in water, they dissociate into ions. These ions are responsible for carrying the electric charge through the solution.

Here is a step-by-step explanation of what needs to be present for an aqueous solution to conduct an electric current:

Dissolved ionic compounds: The solution must contain dissolved ionic compounds, such as sodium chloride (NaCl) or potassium nitrate (KNO3). When these compounds dissolve in water, they dissociate into positive and negative ions.

Free ions: The dissolved ionic compounds break apart into positively charged ions (cations) and negatively charged ions (anions). These free ions are able to move around in the solution.

Mobile charge carriers: The free ions act as mobile charge carriers that can transport electric charge through the solution. They carry the electric current by moving towards oppositely charged electrodes when a potential difference (voltage) is applied across the solution.

Conductivity: The presence of free ions increases the conductivity of the solution. Conductivity is a measure of how well a substance can conduct an electric current. The higher the concentration of free ions, the greater the conductivity of the solution.

Closed circuit: To observe the conduction of electric current in an aqueous solution, a closed circuit is required. This includes a source of electric potential (e.g., battery) and electrodes that are immersed in the solution. The electrodes serve as connection points for the current to enter and exit the solution.

For an aqueous solution to conduct an electric current, it must contain dissolved ionic compounds that dissociate into free ions. These ions act as mobile charge carriers, increasing the conductivity of the solution. By connecting the solution to a closed circuit, the movement of ions allows the electric current to flow through the solution.

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Answer:

43.4 N (newton)

The wavelength of the infrared carrier wave transmitted by a television remote control at 36 500 Hz is 8.21 x 10³ m

The speed of the light = 3 x 10⁸ m/s

The frequency of the remote control = 36,500 Hz

The wavelength of the infrared carrier can be found using the formula,

                          λ = c/ν

where λ is the wavelength of the infrared carrier

          c is the speed of the light

          ν is the frequency of the infrared carrier

Substituting the known values in the above equation,

                  λ = 3 x 10⁸ / 36,500

                     = 0.0000821 x 10⁸

                     = 8.21 x 10³ m

Thus, the wavelength of the infrared carrier is  8.21 x 10³ m

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OPTION  B IS THE ANSWER

Answer:

The real answer is A 2023 answer -_-

Explanation:

Answer:

10cm -> 5j

1cm-> 5/10= 0.5j

16cm-> 0.5× 16= 8j

unitary method

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The name given to those factors that have a direct effect on a specific organization and its managers, including customers, suppliers, competitors, substitutes, and potential new entrants to the industry is "microenvironment."


- The microenvironment refers to the specific factors that impact a business's operations and success.
- These factors are directly under the control of the organization's management team and can be influenced to achieve the desired outcomes.
- Customers are one of the most significant microenvironmental factors. They are the reason why the organization exists and the source of revenue and growth. Managers must understand their needs, preferences, and behavior to satisfy them effectively.
- Suppliers are the companies that provide goods and services to the organization. They are essential for smooth operations and a reliable supply chain.
- Competitors are other firms that offer similar products or services. They are a constant threat and can reduce market share, profits, and customer loyalty. Managers must monitor their actions and strategies to stay ahead of the competition.
- Substitutes are alternatives that customers can choose instead of the organization's offerings. They can be a viable threat and reduce demand for the products or services.
- Potential new entrants refer to companies that may enter the industry and compete with the existing players. They can increase competition, reduce prices, and challenge the established market leaders.

In conclusion, microenvironmental factors have a direct impact on an organization's operations and success. Managers must understand and manage these factors effectively to achieve the desired outcomes and stay ahead of the competition.

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The equation relating voltage, current and resistance is V = IR, this is because voltage in a circuit increases with increase in current and resistance and vice versa.

Ohm's law states that the current flowing in a conductor is directly proportional to the voltage across the conductor.

Mathematically, the formula for Ohm's law is given as;

V = IR

where;

The given data

Voltage ( V )       Current ( I )      Resistance ( R)

4                               2                          2

12                              8                          4

6                               3                           3

From the equation given above, the voltage in the circuit increases with increase in the current and resistance and decreases with decrease in the current and resistance.

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To determine the average density of the NaCl crystal, we can use the formula:

Density = (Mass of Na + Mass of Cl) / Volume

The volume of the crystal can be calculated by considering the spacing of adjacent atoms. Since the spacing is given in nanometers (nm), we need to convert it to meters (m) for consistent units.

Given:

Spacing of adjacent atoms = 0.282 nm = 0.282 × 10^(-9) m

Mass of Na = 3.82 × 10^(-26) kg

Mass of Cl = 5.89 × 10^(-26) kg

Now, let's calculate the volume:

Volume = (Spacing of adjacent atoms)^3

Volume = (0.282 × 10^(-9) m)^3

Next, we can calculate the density:

Density = (Mass of Na + Mass of Cl) / Volume

Density = (3.82 × 10^(-26) kg + 5.89 × 10^(-26) kg) / [(0.282 × 10^(-9) m)^3]

Evaluate the above expression to obtain the average density of the NaCl crystal.

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NaCl crystal consists of sodium and chloride ions which interact in a 1:1 ratio confined in a face-centered cubic (FCC) structure. The inter-atomic separation is 0.282 nm. The ions are held together in place by ionic bonds, showing solid NaCl's stoichiometry.

The atoms in a NaCl crystal are arranged in a face-centered cubic (FCC) structure due to the ionic bonds that hold them together. The inter-atomic separation distance is 0.282 nm. Sodium and chloride ions interact in a 1:1 ratio, and their masses are 3.82*10^-26 kg (Na) and 5.89*10^-26 kg (Cl) respectively.

The crystal structure formed by these ions consists of octahedral holes occupied by sodium ions, while chloride ions form the FCC cell. Their interactions are balanced by electrostatic attraction, which also requires significant energy to break. Each unit cell of the crystal lattice contains both sodium and chloride ions, thus maintaining the 1:1 stoichiometry required by the formula NaCl.

The dimensions, structure, and interactions within a NaCl crystal are critical in understanding the properties of this common salt, including its unique crystalline structure, stability, and behavior in chemical reactions.

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Answer:

The mass formula is given as

Mass = ρ × v

Where,

ρ = density and

v = the volume

The weight mass formula is given as

m = w / g

Where,

w= weight

m = mass

g = gravity

The mass formula is also given as

m = F / a

If acceleration itself is the gravity, then

M = F / g

Where,

F = force

G = gravity

According to Einstein’s mass-energy relation

m = (E / c2)

Where,

m = mass

E = energy

c = speed of light (3×108 m/s)

The kinetic energy mass formula is given as

K.E = ½ mv2

Where,

m = mass,

v = velocity.

Explanation:

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