50% part (a) another dog runs up beside the first dog and starts barking at the same sound intensity level. what sound intensity level in decibels do you hear from the two dogs barking?

President Dwight D. Eisenhower created the National Aeronautics and Space Administration (NASA) in response to several key factors and events during the Cold War era.

Technological competition with the Soviet Union: The creation of NASA was a direct response to the Soviet Union's launch of the first artificial satellite, Sputnik, in 1957. This event shocked the United States and highlighted the Soviet Union's technological advancements in space exploration. In order to regain American prestige and maintain technological superiority, President Eisenhower established NASA to coordinate and oversee civilian space activities.

National security concerns: The Cold War rivalry between the United States and the Soviet Union extended beyond political and ideological differences. Space exploration was seen as a critical arena for showcasing technological prowess and military capabilities. By creating NASA, President Eisenhower aimed to ensure that the United States had a dedicated agency responsible for space research and development, which could contribute to national security objectives.

Military-civilian collaboration: President Eisenhower wanted to establish a clear distinction between military and civilian space activities. By creating NASA as a civilian agency, separate from military organizations such as the U.S. Air Force, he aimed to foster a peaceful and scientific approach to space exploration. This distinction allowed for greater international cooperation in space efforts and encouraged scientific advancement.

Economic and technological benefits: President Eisenhower recognized the potential economic and technological benefits of space exploration. The establishment of NASA provided a framework for government investment in research and development, which could drive innovation and technological advancements. This, in turn, could stimulate economic growth and create new industries.

Overall, President Eisenhower's decision to create NASA was motivated by a combination of factors, including national security concerns, technological competition with the Soviet Union, a desire for civilian control of space activities, and the potential economic and technological benefits of space exploration.

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Given that,

Mass of a frog, m = 0.5 kg

The frog leaps pushing off of the rock with an acceleration of 5.0 m/s².

To find,

The magnitude of the net force exerted on the frog as it leaps.

Solution,

Let the net force exerted on the frog is given by the formula as follows :

F = ma

Putting the values of m and a to find F as follows :

F = 0.5 kg × 5 m/s²

F = 2.5 N

So, the magnitude of net force is 2.5 N.

The magnitude of the net force exerted on the frog as it leaps is 2.5 Newtons.

Hence, Option a) 2.5N is the correct answer.

Given the data in the question;

Force Exerted; \(F = ?\)

To determine the magnitude of the net force exerted on the frog as it leaps, we the expression from the Newton's Second law of motion:

\(F = m * a\)

Where m is mass and a is acceleration

We substitute our given values into the equation

\(F = 0.5kg * 5.0m/s^2\\\\F = 2.5kgm/s^2\\\\F= 2.5N\)

The magnitude of the net force exerted on the frog as it leaps is 2.5 Newtons.

Hence, Option a) 2.5N is the correct answer.  

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Answer:

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Answer: it is 11.8 for Acellus

Explanation:

Answer:

Wave A and B have the same pitch, but Wave A is a quieter/softer sound. Wave A and B have the same pitch, but Wave B is a quieter/softer sound. Which sound wave shows the loudest sound?

Explanation:

i tried to help as quick as i could good luck

a. The time taken to reach maximum height is 2.16 s.

b. The total time taken to return to its original level is 4.32 s.

c. The maximum height reached is 22.9 m.

d.  The horizontal distance travelled is 91.6 m.

Given information:

Velocity of ball = 30 ms⁻¹

Angle = 45° = π/4 rad

Gravity = 9.8 ms⁻²

To find:

a. The time taken to reach maximum height

b. The total time taken to return to its original level

c. The maximum height reached

d. The horizontal distance travelled.

a) The time taken to reach maximum height:

The time taken to reach maximum height can be calculated by using the formula as follows:

Time taken, t = (u sin θ) / g

Where,

u = Velocity of ball = 30 ms⁻¹

θ = Angle = 45° = π/4 rad

g = Acceleration due to gravity = 9.8 ms⁻²

Substitute the given values in the above formula:

t = (30 sin (π/4)) / 9.8

t = 2.16 s

b) The total time taken to return to its original level:

The time taken to reach the maximum height is equal to the time taken to return to its original level. Hence,

Total time taken = 2 x time taken to reach maximum height

Total time taken = 2 x 2.16

Total time taken = 4.32 s

c) The maximum height reached:

The maximum height reached can be calculated by using the formula as follows:

H = (u² sin² θ) / 2g

Where,

u = Velocity of ball = 30 ms⁻¹

θ = Angle = 45° = π/4 rad

g = Acceleration due to gravity = 9.8 ms⁻²

Substitute the given values in the above formula:

H = (30² sin² (π/4)) / (2 x 9.8)

H = 22.9 m

d) The horizontal distance travelled:

The horizontal distance travelled can be calculated by using the formula as follows:

D = u cos θ x t

Where,

u = Velocity of ball = 30 ms⁻¹

θ = Angle = 45° = π/4 rad

t = Total time taken = 4.32 s

Substitute the given values in the above formula:

D = 30 cos (π/4) x 4.32

D = 91.6 m

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The space between various fringes grows as the light's wavelength rises because this is a wavelength-dependent property.

A waveform signal's wavelength is defined as the separation among identical locations (adjacent crests) in adjacent cycles as the signal travels through space or along a wire. This length in wireless systems is typically expressed in metres (m), centimeters (cm), or millimeters (mm) (mm).

Since it dictates the character of the light, the wavelengths is a crucial component. Greens light has a frequency that is distinct from both blue and red light, and it has a wavelength that is distinct from neither of them.

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Answer:

38 years old.

Explanation:

So, we are given the following data or parameters or information which is going to assist us in solving this particular Question;

1=> The three children are A, B and C respectively.

2=> "the present age of husband is 5 years more than the wife's age."

3=> " the wife's age is twice the present age of A"

4=> the present age of A is 12 years more than the present age of B "

5=> B's present age is one and a half times the present age of C .

6=> "if C is 12 years old at present "

7=> "husband's friend Ram who is 15 years younger than the husband"

We will start from point 5 above that is to say;

B = C × 3/2. = 12 × 3/2 = 6 × 3= 18.

Also, A = 12 + B = 12 + 12= 24.

From the point 3 Above; the wife's age= 2 × A= 2 × 24 = 48 years of age.

From the point 2, we have that the husband's age = 5 + 48 = 53 years of age.

Thus, the present age of husband's friend, Ram who is 15 years younger than the husband = 53 - 15 = 38 years old

Answer:

The donkey might be dead

Answer:

Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces.

Explanation:

The heat transfer that happens through direct contact is known as  conduction. Correct option is A.

Conduction is the process through which thermal or electric energy is transferred as a result of the motion of particles. When an electric charge is involved, conduction is categorised as electrical conduction, and when thermal energy is involved, it is categorised as heat conduction.

Thermal energy often moves from quickly moving particles to slowly moving particles during their collisions in the process of heat conduction. Furthermore, thermal energy is frequently transferred between objects of different temperatures as well as between materials (particles) that are in close proximity to one another yet exhibit different electron-acceptance or electron-emission characteristics.

Any material or object that allows the conduction (transmission) of electrical charge or thermal energy is referred to as a conductor. Metal, steel, aluminium, copper, frying pans, pots, spoons, and other items are conductors.

In conclusion, the direct transfer of heat energy between two or more conductors, like a pot and an electric cooker, is a common example of conduction.

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Answer:

C. Light does not need a medium to travel through, but since sound waves must have a medium to vibrate, sound is not created where no air is present.

Explanation:

The reason the bell is seen to vibrate but not heard is that unlike light, which does not require a medium to pass through, sound waves require an air-filled space in order to vibrate. Option C is correct.

A sound wave is produced when a medium begins to vibrate. When an entity vibrates, a pressure wave is formed, which causes sound.

Light does not need a medium to travel through, but since sound waves must have a medium to vibrate, the sound is not created where no air is present best describes why the bell is seen vibrating but not heard.

The complete question is attached.

Hence option C is correct.

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Those substances which are attracted by magnet is called magnetic substances.

Answer:

0.665

Explanation:

I did the work. Just plug everything in from the formula. Look at the lesson manual.

In order to get a stone slab to move, one would have to apply force to it. This can be done in a number of ways, depending on the situation. Here are a few possible laws that could be proposed for moving a stone slab:1. Newton's first law of motion: This law states that an object at rest will stay at rest unless acted upon by an external force. Therefore, to move a stone slab, one would need to apply a force to it.

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The frequency is 94.2 Hz

We  are given the energy of a photon = 6.24x10-29 kJ

We  are asked to find the frequency (ν),

We use the equation E = hν where E is energy, h is Planck's constant and ν is the frequency

The quantity of events per unit of time that occur when an event repeats itself at regularly spaced intervals is known as its frequency.

6.24x10-29 kJ = 6.626x10-34 J-sec * ν

ν = 6.24x10-29 kJ x 1000 J/kJ  / 6.626x10-34 Jsec

ν = 6.24x10-26 J / 6.626x10-34 Jsec

ν = 0.942x108 s-1 = 9.42x107 s-1 = 9.42x107 Hz

9.42x107 Hz x 1 MHz/106 Hz = 94.2 MHz

Hence the frequency is 94.2MHz

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a. We have no genuine moral obligations to future generations. This means that there is no inherent ethical responsibility towards the well-being and interests of those who will come after us.

The statement suggests that we do not have any genuine moral obligations towards future generations. This perspective questions the ethical responsibility we have towards those who will come after us.

It implies that our actions and decisions should not be guided by considerations for the well-being and interests of future generations.

However, this view is subject to debate and ethical considerations vary among individuals and cultures.

It is important to note that moral obligations to future generations are often discussed within the context of sustainable development and intergenerational equity. Many argue that we have a responsibility to ensure the long-term viability of the planet and its resources for the benefit of future generations.

This includes addressing issues such as climate change, environmental degradation, and social justice. While different perspectives exist, recognizing and fulfilling our moral obligations to future generations can contribute to a more sustainable and equitable future.

Therefore, (a) We are not morally obliged to prioritize the well-being and interests of future generations, indicating that there is no inherent ethical responsibility towards them.

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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.

Answer:

All the above

Explanation:

Answer:

1. Which statement correctly describes the classification of chemical reactions into different categories?

-Not all reactions fit into a category, and some reactions can fit into more than one category.

2. In a synthesis reaction, two atoms of sodium (Na) combine with one molecule of chlorine gas (Cl2) to produce sodium chloride (NaCl). How many molecules of sodium chloride are produced?

-Two

3. In the decomposition of water, why is twice as much hydrogen as oxygen formed?

- There are two atoms of hydrogen and one atom of oxygen in a water molecule.

4. Which component is transferred between substances in an oxygen-reduction reaction?

-Electrons

5. In a chemical reaction, substance A transfers electrons to substance B. Which statement is correct?

-Substance B is reduced and acts as the oxidizing agent.

Hope that helps!!

Substance B is reduced and acts as the oxidizing agent.

REDOX REACTION:

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Answer:

Established a government for the Northwest Territory, outlined the process for admitting a new state to the Union, and guaranteed that newly created states would be equal to the original thirteen states

Explanation:

Goooogle, so I hope this helps somewhat

Also, isn't this a History question? You put physics lol

To determine the relative humidity, dew point, and lifting condensation level (LCL) for the given conditions, we can use the provided temperature and water vapor values.

Here are the calculations for each scenario:

1. Temperature: 30°F, Water Vapor: 3.5 g/kg   - Relative Humidity (RH): N/A (Need the actual vapor pressure or saturation vapor pressure)

  - Dew Point: N/A (Need the actual vapor pressure or saturation vapor pressure)   - LCL: N/A (Need the temperature and dew point)

2. Temperature: 50°F, Water Vapor: 5.70 g/kg

  - Relative Humidity (RH): N/A (Need the actual vapor pressure or saturation vapor pressure)   - Dew Point: N/A (Need the actual vapor pressure or saturation vapor pressure)

  - LCL: N/A (Need the temperature and dew point)

3. Temperature: 70°F, Water Vapor: 3.5 g/kg   - Relative Humidity (RH): N/A (Need the actual vapor pressure or saturation vapor pressure)

  - Dew Point: N/A (Need the actual vapor pressure or saturation vapor pressure)   - LCL: N/A (Need the temperature and dew point)

4. Temperature: 80°F, Water Vapor: 5.60 g/kg

  - Relative Humidity (RH): N/A (Need the actual vapor pressure or saturation vapor pressure)   - Dew Point: N/A (Need the actual vapor pressure or saturation vapor pressure)

  - LCL: N/A (Need the temperature and dew point)

5. Temperature: 80°F, Water Vapor: 11.56 g/kg   - Relative Humidity (RH): N/A (Need the actual vapor pressure or saturation vapor pressure)

  - Dew Point: N/A (Need the actual vapor pressure or saturation vapor pressure)   - LCL: N/A (Need the temperature and dew point)

6. Temperature: 30°F, Mixing Ratio: 3.5

  - Relative Humidity (RH): N/A (Need the actual vapor pressure or saturation vapor pressure)   - Dew Point: N/A (Need the actual vapor pressure or saturation vapor pressure)

  - LCL: N/A (Need the temperature and dew point)

7. Temperature: 70°F, Mixing Ratio: 8.32   - Relative Humidity (RH): N/A (Need the actual vapor pressure or saturation vapor pressure)

  - Dew Point: N/A (Need the actual vapor pressure or saturation vapor pressure)   - LCL: N/A (Need the temperature and dew point)

8. Temperature: 70°F, Mixing Ratio: 3.66

  - Relative Humidity (RH): N/A (Need the actual vapor pressure or saturation vapor pressure)   - Dew Point: N/A (Need the actual vapor pressure or saturation vapor pressure)

  - LCL: N/A (Need the temperature and dew point)

9. Temperature: 80°F, Mixing Ratio: 17.59   - Relative Humidity (RH): N/A (Need the actual vapor pressure or saturation vapor pressure)

  - Dew Point: N/A (Need the actual vapor pressure or saturation vapor pressure)   - LCL: N/A (Need the temperature and dew point)

10. Temperature: 50°F, Mixing Ratio: 6.54

   - Relative Humidity (RH): N/A (Need the actual vapor pressure or saturation vapor pressure)    - Dew Point: N/A (Need the actual vapor pressure or saturation vapor pressure)

   - LCL: N/A (Need the temperature and dew point)

To calculate the relative humidity, dew point, and LCL, we require

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The car travels approximately 208.3 feet before coming to a complete stop.To determine how many feet the car travels before coming to a complete stop, we will first find the time it takes for the car to stop and then calculate the distance traveled during that time.

1. Calculate the time to stop (t):
The car decelerates at a constant 6 ft/sec². To find the time it takes to stop, we will use the formula:
Final velocity (v) = Initial velocity (u) - (deceleration × time)
0 = 50 - (6 × t)
6t = 50
t = 50 / 6
t = 8.33 seconds

2. Calculate the distance traveled (s):
Now that we have the time it takes to stop, we can calculate the distance the car travels before stopping. We can use the formula:
s = ut - 0.5 × a × t²
where:
s = distance traveled
u = initial velocity (50 ft/sec)
a = deceleration (6 ft/sec²)
t = time to stop (8.33 seconds)
Plugging in the values:
s = (50 × 8.33) - (0.5 × 6 × 8.33²)
s = 416.5 - 0.5 × 6 × 69.4
s = 416.5 - 208.2
s = 208.3 feet

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Answer:

below

Explanation:

that is the procedure above

Answer:

Difference in Twin's Ages = 12.68 years

Explanation:

Using special theory of relativity's time dilation phenomenon, we first find the time that is passed on earth during Lou's trip.

t = t₀/[√(1 - v²/c²)]

where,

t = time measured by the person in relative motion = 1 year

t₀ = time measured by the person at rest = ?

v = speed of relative motion = 0.96 c

c = speed of light  

Therefore,

1 year = t₀/[√(1 - 0.96² c²/c²)]

1 year = t₀/[√(1 - 0.9216)]

(1 year)(0.28 year) = t₀

t₀ = 0.28 year

Let,

y = Sue's age

x = Lou's age

so,

x - y = 13.4 years

but, after this trip Lou has aged 1 year, and on earth only 0.28 years passed so, Sue has aged only 0.28 years. Therefore,

x = x + 1

y = y + 0.28

Therefore,

(x + 1 year) - (y + 0.28 year) = 13.4 years

x - y = 13.4 years - 0.72 year

x - y = 12.68 years

Difference in Twin's Ages = 12.68 years

Students were asked about the speed of cars involved in an accident. When the verb was changed from "contacted" to "smashed", students were more likely to report that there was broken glass involved in the accident.

A verb is one of the parts of speech in English language and it can be defined as a type of word which is used to describe an action, occurrence, experience, or a state of existence such as, smashed, living, contacted, clean, drive, etc.

Speed can be defined as the distance covered by a physical object per unit of time. This ultimately implies that, the higher the speed of a car that is involved in a road crash or accident, the higher would be the level of impact and damage that would be caused.

In this context, we can reasonably infer and logically deduce that changing the verb from contacted to smashed, ultimately implies that the road crash or accident was ghastly and fatal and such would cause broken glasses in the cars that were involved.

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Complete Question:

Students were asked about the speed of cars involved in an accident. When the verb was changed from "contacted" to "smashed" ______,

students were more likely to report that there was broken glass involved in the accident

students were less likely to report that the cars were traveling at high speeds

students were more likely to report that no one was injured in the accident

there was no differences noted.

Explanation:

\(Σf = ma\)

This means the sum of all forces acting on an object = mass times accleration so first, let find the ma.

The mass is 9 kg and the acclereation is 2.0 m/s^2.

\(Σf = 9(2)\)

which equals

18 N.

So the mass times accleration equal 18 N.

So now what are forces acting on the box?

Since the box isn't levitationg nor falling, the vertical forces, mg and normal force cancel out to 0. so we only have horinzontial forces.

The push force is 20 N and the friction force is considered negative so we have

\(p - f = 18\)

p is 20 so we get

\(20 - f = 18\)

\( - f = - 2\)

\(f = 2\)

So the friction force is 2 N

p is the push force and that us

For the free body diagram, draw a square, and draw arrows from the center of the square in all 4 ways.

Make sure the vertical arrows are equal in length to show they cancel out.

The right horinzontial arrow should be 20 N and the left arrow should be 2 N

The force of friction on the wagon is equal to 2.0 N.

Frictional force can be defined as the force generated by two surfaces that contact and slide against each other. Frictional forces are affected by the angle, the surface texture, and the position of the object.

Friction can be defined as the force that slows down the movement when one surface comes in contact with another surface. The mechanical advantage decreases by friction the ratio of output to input is reduced because of friction.

The fractional force can be expressed as follows:

F = μ mg

Given, the mass of the wagon, m = 9.0 Kg

The acceleration of the wagon, a = 2.0 m/s²

The applied force on the wagon, F = 20 N

The frictional force can be calculated as:

\(F - F_k = ma\)

\(F_k= F-ma\)

\(F_k\) = 20 - 9 × 2.0

\(F_k = 2.0 N\)

Therefore, the force of friction is 2.0 N.

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Unit Level means assembling the individual components of a tennis ball, such as the felt and rubber pieces. Batch Level indicates testing a batch of tennis balls for quality control.

1. Receiving felt shipments - Batch Level: Receiving shipments of felt is a batch-level activity because it involves specific batches of felt that are associated with a particular production run.

2. Cutting felt - Unit Level: Cutting felt is a unit-level activity because it involves cutting individual pieces of felt for use in the production process.

3. Forming rubber cores - Unit Level: Forming rubber cores is a unit-level activity because it involves creating individual pieces of rubber for use in the production process.

4. Reducing electricity usage - Facility Level: Reducing electricity usage is a facility-level activity because it involves the entire facility, not just the production of tennis balls.

5. Calibrating machines - Facility Level: Calibrating machines is a facility-level activity because it involves ensuring that all of the machines in the facility are operating correctly and efficiently.

6. Planning production - Facility Level: Planning production is a facility-level activity because it involves determining how the facility will operate in order to meet production goals.

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complete question: Classify each of the following activities as unit level, batch level, product level, or facility level for a manufacturer of tennis balls. Activity level: 1. Receiving felt shipments 2. Cutting felt 3. Forming rubber cores 4. Reducing electricity usage 5. Calibrating machines 6. Planning production.

So the relation between watt W to volt V and siemans S can be derived as, 1watt = 1 amp × volt and 1 SV = 1 W/V.

Power is measured in watts. It is the current flow of one amp with a voltage of one volt in terms of electromagnetism. Electric potential, electromotive force, and electric potential difference are all measured in units called volts. A clear relationship exists between watt and volt. This suggests that a change in watt value will correspond to a change in volt value.

The relationship between watt and volt in physics is as follows:

1 watt = 1 amp x 1 volt.

1 volt = 1watt/1 amp

Where,

Power is measured in watts.

The unit used to express electric potential is volt.

Current is measured in amperes.

One siemens Volt (SV) equals one ampere, while one Watt per Volt (W/V) equals one ampere in regard to the fundamental unit of [electric current] (amperes). Watts per Volts to siemens Volts

The SI Unit's base unit for measuring electric current is the ampere [Siemens Volts] symbol or acronym: (SV)

Watts for each volt Abbreviation or symbol: (W/V)

Relation between siemens Volts to Watts Per Volts,

1 SV = 1 W/V.

1 × 1 W/V = 1 W per volt.

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