An archer pulls her bow string back 0.40 m by exerting a force that increases uniformly from zero to 230 N. (a) What is the equivalent spring constant of the bow

Answer:

option C

since F=ma

the acceleration of an object depends on the object's mass and the net applied force

Answer:

It has to do with the polairity of said molelule. If you have vegetable oil, for example, it will not disolve in water because the oil is a non-polar compound, unlike water which is polar. The bond dipoles and differences in electronegetivity in the molecule results in this.

The frequency shift is 188.2 kHz.

The frequency shift, also known as the Doppler shift, can be calculated using the formula Δf/f = v/c, where Δf is the frequency shift, f is the original frequency (21.0 GHz), v is the velocity of the car (68.0 mph), and c is the speed of light.

First, we need to convert the velocity of the car from mph to m/s, which is 30.28 m/s. Then, we can plug in the values and solve for Δf.

Δf/f = v/c
Δf/21.0 GHz = (30.28 m/s)/c
Δf = (21.0 GHz)(30.28 m/s)/c
Δf = 188.2 kHz

This information can be used by the police to determine the speed of the car and potentially issue a speeding ticket.

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Answer:

The answer is water

Explanation:

it has a netural ph of 7.0

why is the only option milk?

The Ph for milk is about 6.5 to 6.7,  it varies becauses milks gets sour when it rots.

Because different materials originate at various distances from the sun, different densities develop at various distances.

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Answer:

B) t = 1.83 [s]

A) y = 16.51 [m]

Explanation:

To solve this problem we must use the following equation of kinematics.

\(v_{f} =v_{o} -g*t\)

where:

Vf = final velocity = 0

Vo = initial velocity = 18 [m/s]

g = gravity acceleration = 9.81 [m/s²]

t = time [s]

Note: the negative sign in the above equation means that the acceleration of gravity is acting in the opposite direction to the motion.

A) The maximum height is reached when the final velocity of the ball is zero.

0 = 18 - (9.81*t)

9.81*t = 18

t = 18/9.81

t = 1.83 [s], we found the answer for B.

Now using the following equation.

\(y = y_{o} + v_{o}*t - 0.5*g*t^{2}\\\)

where:

y = elevation [m]

Yo = initial elevation = 0

y = 18*(1.83) - 0.5*9.81*(1.83)²

y = 16.51 [m]

The number of electrons that is needed to fill the following sublevels are:

The formula to find this out is:

= 2 x (2 x Level +1)

1s = 0 levels

Number of electrons:

= 2 x (2 x 0 + 1)

= 2 electrons

2s = 0 levels

= 2 x (2 x 0 + 1)

= 2 electrons

2p = 1 level

= 2 x (2 x 1 + 1)

= 6 electrons

3s = 0 levels

= 2 x (2 x 0 + 1)

= 2 electrons

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The completed table using the electron arrangement interactive is attached below. In this table for sublevel 1s, 2s, 2p and 3s electron needed is 2,2,6 and 2 respectively.

The electron arrangement is the way or process to arrange the electrons in an atom. The number of electron  needed per sublevel are expressed in following points.

The image of the table which fill the sublevel is attached below. In this table all the electron is fulfilled with needed electrons.

Thus, the completed table using the electron arrangement interactive is attached below. In this table for sublevel 1s, 2s, 2p and 3s electron needed is 2,2,6 and 2 respectively.

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The gravitational potential energy of the three particle system is 166.75 x 10⁻¹⁰ J and they will collide at the center of the triangle when released simultaneously.

(a) The gravitational potential energy of the two masses is given by,

U = GMm/R

Where,

G is universal gravitational constant,

M is mass of one body and m is mass of other body,

R is the distance between them.

Now,

We have three masses of 5 kg at vertices of triangle of length 30cm.

The masses have equal distance them and the masses are equal.

There are total of three pairs mass objects with masses 5 Kg and distance 30cm.

So,

We can write,

U = 3 x (6.67 x 10⁻¹¹ x 5 x 5)/0.30

U = 166.75 x 10⁻¹⁰ J.

(b) If the particles are released, they will collide at the center of the triangle.

Because at the center of the triangle, the potential energy of the system will become zero.

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Answer:

Both

Explanation:

Both of them are part of newtons laws of motion

Temperature measures the average kinetic energy of the atoms in a substance.

Temperature is a measure of the average kinetic energy of the particles (atoms or molecules) within a substance. Kinetic energy is the energy associated with the motion of particles. As temperature increases, the particles move faster, resulting in an increase in their kinetic energy. Conversely, a decrease in temperature causes the particles to slow down, reducing their kinetic energy. The kinetic energy of individual particles may vary, but temperature provides an indication of the average kinetic energy across the substance. Therefore, temperature serves as a useful metric for comparing the thermal energy content or "hotness" of different substances.

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To calculate the additional distance the buoy will sink when a man stands on top, we need to consider the change in buoyancy force and the additional weight added to the system.

The buoyancy force is equal to the weight of the fluid displaced by the buoy. In this case, since the buoy is floating vertically, the buoyancy force is equal to the weight of the buoy itself.

Buoyancy force = Weight of the buoy = Mass of the buoy * Gravitational acceleration

Buoyancy force = 1200 kg * 9.8 m/s^2 = 11,760 N

When the man stands on top of the buoy, his weight is added to the system. The additional weight is:

Additional weight = Mass of the man * Gravitational acceleration

Additional weight = 80 kg * 9.8 m/s^2 = 784 N

The additional weight will increase the total weight of the system, and consequently, the buoyancy force will also increase.

The additional distance the buoy will sink can be calculated using Archimedes' principle, which states that the buoyant force is equal to the weight of the fluid displaced by the object.

Additional distance = Additional weight / (Cross-sectional area * Fluid density)

The cross-sectional area of the buoy can be calculated using the diameter:

Cross-sectional area = π * (Diameter/2)^2 = π * (0.9 m / 2)^2

Assuming the fluid density of saltwater is 1025 kg/m^3, we can substitute the values into the equation:

Additional distance = 784 N / (π * (0.9 m / 2)^2 * 1025 kg/m^3)

Calculating the additional distance will provide the specific value based on the given dimensions and assumptions.

In summary, to find the additional distance the buoy will sink when a man stands on top, we consider the change in buoyancy force due to the added weight. By using Archimedes' principle, the additional distance can be calculated by dividing the additional weight by the cross-sectional area of the buoy multiplied by the fluid density.

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Answer:

The thrust that you feel at the time of firing is one of the real-life example of the conseriation nomentum

Answer: 0.488  m

Explanation: I have my ways ;>

Your mass would be the same on the moon as it is on Earth, which is 60 kg. Despite the moon and Earth having different gravitational fields, mass is a constant indicator of the quantity of matter present.

This suggests that option b) is the proper one.

What is the gravitational difference between the moon and the earth?

The moon won't draw things toward itself with the same force as the Earth since it has a lot less mass than the latter. In other words, even if your mass stays the same, you would weigh less if you traveled to the moon!

The average gravity at Earth's surface is 9.8 meters per second. For example, when something is thrown over the top of a building or the edge of a cliff, it falls at a speed of 9.8 meters per second each second. The surface gravity of the Moon is around 1/6th as strong, or 1.6 meters per second every second.

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I understand that the question you are looking for is:

If your mass is 60 kilograms on earth, what would your mass be on the moon?

a) 10 pounds

b) 60 kilograms

c)60 pounds

d)10 kilograms

e)360 kilograms

Answer:

14.76

Explanation:

If you put it in the calculator it would show

If the Sun had been born with a smaller, lower-mass companion star, would that star be a red dwarf today or would it already be dead, it would still be a red dwarf today regardless of how much less mass than the Sun it has, since its lifetime would be inherently longer than the Sun's.

Stars sparkle and shine—they appear to have an incandescence of their own even when they are bathed in the spotlight—so it stands to reason that they are stars. However, they are "stars" in a much more specific sense because they are a product of the long-standing Western cultural tendency to equate humanity with the heavenly.

Not all celebrities live alone. About half of all stars in our galaxy, the Milky Way, have a companion and journey through space in a binary system.

Now, the long-lost partner of the Sun could be found anywhere in the Milky Way. According to a team of Harvard astronomers, our solar system was once a binary system because the Sun formerly had a companion star.

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The ice is needed to make the final temperature of the system 37.1° C is 1.99 kg.

To find the amount of ice needed to make the final temperature of the system 37.1 °C, we can use the formula Q = mcΔT, where Q is the amount of heat, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature.

First, we need to find the amount of heat needed to raise the temperature of the water from −15.5° C to 37.1° C. The specific heat capacity of water is 4.184 J/g °C, so:

Q = mcΔT
Q = (1 kg)(4.184 J/g° C)(37.1° C - (-15.5° C))
Q = 219.954 J

Next, we need to find the amount of ice needed to absorb this amount of heat. The specific heat capacity of ice is 2.108 J/g °C, so:

Q = mcΔT
219.954 J = (m)(2.108 J/g° C)(37.1° C - (-15.5° C))
m = 219.954 J / (2.108 J/g° C)(52.6° C)
m = 1.99 kg

Therefore, 1.99 kg of ice is needed to make the final temperature of the system 37.1° C.

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Answer:

The correct answer is A. Thermal energy (heat) is defined as the sum of all the kinetic energies of all the particles in an object.

Alicia's feelings of unfairness in the situation where she must work in her job for two years before being considered for promotion fall under the category of distributive justice.

Distributive justice refers to perceptions of fairness in the distribution or allocation of rewards, benefits, and resources within an organization. It focuses on the fairness of the outcomes or end results. Alicia's dissatisfaction stems from her perception that the distribution of promotions is unfair because she believes that the requirement of a two-year tenure is not justified or equitable.

In Alicia's view, the two-year tenure requirement might be seen as arbitrary or unrelated to her actual performance, skills, or qualifications for the promotion. She may argue that her abilities and contributions should be the primary factors considered for advancement, rather than simply the length of time spent in her current position.

Distributive justice is concerned with ensuring fairness and equity in the allocation of rewards, such as promotions, raises, and other benefits, based on individuals' contributions, qualifications, or merit. Alicia's sense of unfairness suggests that she perceives a disconnect between her actual performance and the reward structure in place.

Alicia's feelings of unfairness regarding the two-year tenure requirement for promotion fall under the category of distributive justice. She believes that the distribution of promotions is unfair because she perceives the requirement as unrelated to her actual qualifications and performance. Addressing her concerns would involve reviewing and potentially revising the promotion criteria to ensure a more equitable and merit-based allocation of rewards. By considering individuals' contributions and qualifications, organizations can enhance perceptions of distributive justice and promote a fair and motivating work environment.

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Answer:

Electric charge. A fundamental property that leads to the electromagnetic interactions among particles that make up matter.

Para encontrar el punto donde están enterradas las llaves del Porsche nuevo, debemos sumar los tres desplazamientos dados en el problema.

Primero, el desplazamiento de A tiene una magnitud de 72.4 m y una dirección de 32.0° al este del norte. Usando trigonometría, podemos descomponer este desplazamiento en sus componentes vertical y horizontal: Componente vertical = 72.4 m sin(32.0°) ≈ 38.9 m hacia el norte. Componente horizontal = 72.4 m cos(32.0°) ≈ 61.5 m hacia el este. Por lo tanto, el desplazamiento de A se puede representar como un vector de 61.5 m hacia el este y 38.9 m hacia el norte. Segundo, el desplazamiento de B tiene una magnitud de 57.3 m y una dirección de 36.0° al sur del oeste. De manera similar, podemos descomponer este desplazamiento en sus componentes vertical y horizontal: Componente vertical = 57.3 m sin(36.0°) ≈ 34.4 m hacia el sur. Componente horizontal = 57.3 m cos(36.0°) ≈ 46.0 m hacia el oeste. Por lo tanto, el desplazamiento de B se puede representar como un vector de 46.0 m hacia el oeste y 34.4 m hacia el sur. Finalmente, el desplazamiento de C tiene una magnitud de 17.8 m hacia el sur. Este desplazamiento solo tiene una componente vertical. Ahora, podemos sumar los tres vectores de desplazamiento para obtener la resultante. Podemos hacer esto sumando las componentes horizontal y vertical por separado: Componente horizontal total = 61.5 m - 46.0 m = 15.5 m hacia el este

Componente vertical total = 38.9 m - 34.4 m - 17.8 m = -13.3 m hacia el norte. La magnitud de la resultante se puede encontrar usando el teorema de Pitágoras: |magnitud resultante| = sqrt((15.5 m)^2 + (-13.3 m)^2) ≈ 20.2 m. Por lo tanto, el concursante ganador debería ir en una dirección de aproximadamente 29.7° al este del norte para encontrar las llaves del Porsche nuevo.

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For a planet or moon to have planet-wide convection cycles, it must have a molten or partially molten interior, a strong global magnetic field, and a thick mantle that can support convection over long periods of time.

For a planet or moon to have planet-wide convection cycles, several conditions need to be met. The first requirement is that the planet or moon must have a molten or partially molten interior, which allows for the movement of material within the mantle. This movement is driven by heat transfer from the planet's core, which creates thermal gradients that cause material to rise and fall in a convection cycle.
Another requirement is the presence of a strong, global magnetic field. This magnetic field is generated by the movement of molten material in the planet's core and helps to protect the planet from harmful solar radiation. It also plays a crucial role in driving convection cycles, as the magnetic field interacts with the convecting material in the mantle.
Finally, the planet or moon must have a relatively thick mantle that is capable of supporting convection over long periods of time. This requires a sufficient amount of heat to be generated within the core and a slow cooling rate, which allows the mantle to remain molten for billions of years.
In summary, for a planet or moon to have planet-wide convection cycles, it must have a molten or partially molten interior, a strong global magnetic field, and a thick mantle that can support convection over long periods of time.

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The energy of photon involved in exciton absorption in Germanium (Ge) is approximately 0.76 eV.

The energy of photon involved in exciton absorption in Germanium (Ge) is approximately 0.76 eV. This can be calculated using the formula E_photon = E_gap + E_excitonwhere E_photon = energy of photon,E_gap = energy gap of Ge, andE_exciton = exciton energy.Substituting the given values we have;E_photon = 0.75 eV + 0.01 eVE_photon = 0.76 eVThe effect of exciton absorption on the absorption spectrum of Ge is the appearance of a new peak or band.

The exciton absorption band is usually narrower than the band for the direct interband transition because of the localization of electron and hole pairs. As the temperature is raised, the absorption coefficient for the exciton peak decreases and broadens due to the thermal dissociation of excitons.

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The Hood Canal Bridge is a floating bridge that uses pontoons to support the weight of the bridge deck and allow for water traffic to pass underneath.

The Hood Canal Bridge is a floating bridge that spans the Hood Canal, a narrow and deep fjord in Washington State, USA. The bridge is made up of two parallel pontoons, each over 2,500 feet long, that are connected by a series of trusses and beams.

The pontoons float on the surface of the water and are stabilized by a system of cables and anchors that hold them in place. The bridge is supported by over 80 concrete pillars that are anchored to the sea floor. The bridge can be opened to allow boats and ships to pass through by raising the pontoons using hydraulic jacks, which are powered by two diesel engines.

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Answer:

calculate the mass of mass A i the diagram .the frame joining the mass is massless

Explanation:

The mass of mass A the diagram .the frame joining the mass is massless.

The unique location in an object or system that can be used to describe how the system reacts to outside forces and torques is referred to as the "center of mass" or "center of gravity" in a uniform gravity field.

The idea of the center of mass is that it is the average of all the masses divided by the distances between them. With regard to the torques produced, that is comparable to balancing a seesaw around a pivot point in one plane.

Therefore, The mass of mass A the diagram .the frame joining the mass is massless.

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Answer:

Explanation:

To calculate the present worth of each option, we need to consider the cost of the insulation, the heat loss savings, and the required return rate.

1.  No insulation:

The cost of heat loss per foot of pipe without insulation is $1.00 per year.

The present worth of heat loss for no insulation over 10 years can be calculated as follows:

Present Worth = Cost of heat loss per year * Number of feet of pipe * Present worth factor for 10 years at 9% return rate

Present Worth = $1.00/ft/year * 255,000 ft * Present worth factor for 10 years at 9% return rate

2.  1-inch insulation:

The cost of 1-inch insulation per foot of pipe is $0.35.

The heat loss reduction with 1-inch insulation is 75%, which means only 25% of the original heat loss remains.

The present worth of heat loss for 1-inch insulation over 10 years can be calculated as follows:

Present Worth = Cost of heat loss per year * Number of feet of pipe * Heat loss reduction * Present worth factor for 10 years at 9% return rate

Present Worth = ($1.00/ft/year * 255,000 ft * 0.25) + ($0.35/ft * 255,000 ft * Present worth factor for 10 years at 9% return rate)

3.  2-inch insulation:

The cost of 2-inch insulation per foot of pipe is $0.80.

The heat loss reduction with 2-inch insulation is 92%, which means only 8% of the original heat loss remains.

The present worth of heat loss for 2-inch insulation over 10 years can be calculated as follows:

Present Worth = Cost of heat loss per year * Number of feet of pipe * Heat loss reduction * Present worth factor for 10 years at 9% return rate

Present Worth = ($1.00/ft/year * 255,000 ft * 0.08) + ($0.80/ft * 255,000 ft * Present worth factor for 10 years at 9% return rate)

To calculate the present worth factors at a 9% return rate, you can use a TVM (Time Value of Money) calculator or refer to a TVM factor table.

Once you calculate these values, you will have the present worth of each option: no insulation, 1-inch insulation, and 2-inch insulation.

The energy consumed by the 7 100-watt light bulbs left on for 1.5 days is 25.2 kWh.

Given:

Total bulbs = 7

Power of each bulb = 100 W

Time = 1.5 days

To find: Energy used in KWh; Formula used: Energy = Power * Time

Energy used by one bulb in a day = 100 W * 24 hours = 2400 Wh = 2.4 KWh

Total energy used by one bulb in 1.5 days = 2.4 KWh * 1.5 = 3.6 KWh

Total energy used by 7 bulbs in 1.5 days = 3.6 KWh * 7 = 25.2 KWh

Therefore, 25.2 KWh of energy would be used by 7 total 100-w light bulbs in a parallel circuit in your basement and you leave them on for 1.5 days.

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The power for element (a) is -39 VA to two significant figures with the correct algebraic sign.

To compute the power for element (a), we can use the formula P = V * I, where P is power, V is voltage, and I is current.

Substituting the given values, we get:

P = (-13 V) * (3 A) = -39 W

Since the voltage is negative and the current is positive, the power is negative, indicating that the element is absorbing power rather than supplying it.

Expressing the answer to two significant figures and including the appropriate units, the power for element (a) is -39 W.

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The two instances where there is no change in the state of motion in an object on application of force on the object are when an object is at rest, and when an object is in motion,  

In either case, the net force on the object is zero, this is referred to as Newton's First Law, which states that if the net force acting on an object is zero, the object will remain at rest or in a state of uniform motion. This law is also known as the law of inertia. The primary implication of Newton's First Law is that an object will remain in a state of uniform motion until acted upon by an unbalanced force.

As a result, any object at rest or in uniform motion will remain so until a net external force acts on it. The object will accelerate in the direction of the net force applied to it. For instance, if we apply a force of 10 N to a book resting on a table, it will not move if the frictional force is more significant than the applied force. So therefore when an object is at rest, and when an object is in motion, are the two instances where there is no change in the state of motion of an object on the application of force on the object.

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1i. The time taken for the coin to fall is 3.19 s

1ii. The velocity as it touches the ground is 31.262 m/s

2. The maximum height reached is 11.025 m

3i. The time of flight is 3.9 s

3ii. The distance from where it was fired is 90.4 m

3iii. The maximum height of the bullet is 19.0 m

1i. How do I dtermine the time taken?

The time taken for the coin to fall ca need obtained as follow:

h = ½gt²

50 = ½ × 9.8 × t²

50 = 4.9 × t²

Divide both side by 4.905

t² = 50 / 4.9

Take the square root of both side

t = √(50 / 4.9)

Time taken = 3.19 s

1ii. How do i determine the velocity?

The velocity of the coin as it touches the gro Indian be obtainned a as follow:

v = u + gt

v = 0 + (9.8 × 3.19)

v = 0 + 31.262

velocity = 31.262 m/s

2. How do I determine the maximum height?

The maximum height reached by the ball can be obtained as follow:

h = ½gt²

h = ½ × 9.8 × 1.5²

Maximum height = 11.025 m

3i. How do I determine the time of flight?

The time of flight can be obtained as follow:

T = 2uSineθ / g

T = (2 × 30 × Sine 40) / 9.8

Time of flight = 3.9 s

3ii. How do I determine the distance?

The distance from where the bullet was fired can be obtained as follow:

R = u²Sine(2θ) / g

R = [30² × Sine (2×40)] / 9.8

Distance = 90.4 m

3iii. How do I determine the maximum height?

The maximum height of the bullet can be obtained as follow:

H = u²Sine²θ / 2g

H = [30² × (Sine 40)²] / (2 × 9.8)

Maximum height = 19.0 m

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