A 0.075-kg arrow is fired horizontally. The bowstring exerts a force on the arrow over a distance of 0.90 m. the bow at 40 m/s. What average force does the bow apply to arrow?​

Answer:

4 times that of nitrogen gas, N2.

Explanation:

Let R1 be the rate of diffusion of nitrogen gas, N2.

Let R2 be the rate of diffusion of Hydrogen gas, H2.

Let M1 be the molar mass N2

Let M2 be the molar mass of H2.

Next, we shall determine the molar mass of N2 and H2.

This is illustrated below below:

Molar mass of N2 (M1) = 2 x 14 = 28 g/mol

Molar mass of H2 (M2) = 2 x 1 = 2 g/mol

Finally, we shall determine the rate of diffusion of Hydrogen gas, H2 as follow:

R1/R2 = √(M2/M1)

M1 = 28

M2 = 2

R1/R2 = √(M2/M1)

R1/R2 = √(2/28)

R1/R2 = √(1/14)

R1/R2 = 0.27

Cross multiply

R1 = R2 × 0.27

Divide both side by 0.27

R2 = R1/0.27

R2 = R1 × 1/0.27

R2 = R1 × 4

R2 = 4R1

Therefore, the rate of diffusion of H2 (R2) is 4 times that of N2 (R1)

Newton gave three laws of motion.

The first law of motion states about the inertia. This is also known as when a body with no net force acting on it will remain in the same motion until a force is applied.

The second law of motion states about the force acting on a body and it states that the amount of force applied will be equal to the mass of the body and the acceleration on it.

The third law of motion states about the force when it is applied. According to this law, there is equal and opposite force applied to all the bodies in contact.

From the above laws, we get to know that these are all related to force. This can give a clear picture that all laws of motion have relation with force which is applied on the body and these laws tells how the body reacts when in contact with the force.

But the difference between these laws of motion is that the first law states about the absence of force, the second law states about the amount of force to be applied and the third law states when the force is already applied.

Therefore, in the conclusion, we can say that all the three laws of motion are about force but in different phases of force.

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Answer: B. Time

Explanation: The speed in the independent variable representing the time taken to move somewhere. The time is the dependent variable because it changes on how fast or slow the vehicle moved. Hope this helped.

A passive harmonic filter uses capacitors and inductors that are tuned to remove particular harmonic frequencies.

A passive harmonic filter is the part of motor systems and utilizes capacitors to carry out different functions.

It is an important component that is installed in the inner side of the motor drive structure to block harmonic frequency.

There are diverse frequency drives in the motor system that produce a lot of distortion.

The purpose of harmonic filter is to reduce the noise produced by distortion.

Furthermore, if the problem is not adequately addresses then it can cause damage to nearby devices or equipment.

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Answer:

false

Explanation:

most prototypes are and perfect and they are build to find our mistakes

Answer:

Sunlight allows plants to perform photosynthesis, a process which is required for plant growth and health. ... Plants that are denied sufficient light will eventually lose their color and die. Plants deprived of light will grow upward, stretching their stems more rapidly that usual, searching for light.

Answer:

Sunlight allows plants to perform photosynthesis, a process which is required for plant growth and health. ... Plants that are denied sufficient light will eventually lose their color and die. Plants deprived of light will grow upward, stretching their stems more rapidly that usual, searching for light

Explanation:

i got this from  

https://sciencing.com/what-happens-to-plants-if-they-have-no-sun-12486997.html#:~:text=Sunlight%20allows%20plants%20to%20perform,for%20plant%20growth%20and%20health.&text=Plants%20that%20are%20denied%20sufficient,that%20usual%2C%20searching%20for%20light.

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Explanation:

 A burning candle emits radiation in the form of heat and light. The Sun emits radiation in the form of light, heat, and particles.

Answer: The energy from the sun is one great example of radiation. The sun emits light in a broad range of wavelengths which all contain energy. These waves are also discussed in the climate section for energy balance. The waves are emitted from the sun and travel through space and hit the earth and other planets.

EXTRA EXAMPLES: heat from a stove burner.

visible light from a candle.

x-rays from an x-ray machine.

alpha particles emitted from the radioactive decay of uranium.

sound waves from your stereo.

microwaves from a microwave oven.

electromagnetic radiation from your cell phone.

Answer:

Avg. Velocity = 10 m/s

Acceleration =  2 m/s^2

Distance = 100 m

Explanation:

First, we need to convert the velocity of the car from km/h to m/s, since the standard unit of velocity in SI units is meters per second.

72 km/h = 20 m/s (to 2 significant figures)

We can now calculate the average velocity of the car using the formula:

average velocity = total distance ÷ total time

Since the car starts from rest, its initial velocity is 0 m/s. Therefore, the total distance it travels during the 10 seconds is:

distance = (1/2) × acceleration × time²

where acceleration is the constant acceleration of the car during the 10 seconds, which we do not know yet.

To find the acceleration, we can use the formula:

final velocity = initial velocity + acceleration × time

The final velocity of the car is 20 m/s (which we calculated earlier), the initial velocity is 0 m/s, and the time is 10 seconds. Therefore:

20 m/s = 0 m/s + acceleration × 10 s

Solving for acceleration:

acceleration = 2 m/s²

Substituting this value of acceleration into the formula for distance, we get:

distance = (1/2) × 2 m/s² × (10 s)² = 100 meters

Therefore, the average velocity of the car during the 10 seconds is:

average velocity = total distance ÷ total time = 100 meters ÷ 10 seconds = 10 m/s

The acceleration of the car during the 10 seconds is 2 m/s², and the distance travelled by the car during this period is 100 meters.

Answer:

9 and 4

Explanation:

The relation is:

● r = s^2 / t^2

Triplind s means multiplying it by 3. Since it's an equation we should multiply both sides by the same number

Let k be the number we should multiply by r

●k* r = (3s)^2 / t^2

●k* r = 9s^2 /t^2

We have multiplied s^2 by 9 so we should do the same for r.

k = 9

■■■■■■■■■■■■■■■■■■■■■■■■■■

Doubling t means multiplying it by 2.

Let x be the number we shoukd multiply by r.

● x* r = s^2/(2t)^2

● x*r = s^2/ 4t^2

We have multiplied t^2 by 4 so we should do the same for r.

x= 4

Answer:

2

Explanation:

I took the test and got it correct

Answer:

2

Explanation:

Answer:

he magnetic field is greater because the magnetization of the material is added

Explanation:

The magnetic field in a solenoid is given by the relation

          B₀o = μ₀ n I

where n is the density of turns and I the current

When we put a magnetic material inside solenoid

the magnetic field is

         B = B₀ + μ₀ M

where M is called the magnetization of the material and corresponds to the alignment of the magnetic moments of the atoms with the field, therefore the total field is much greater, it should be noted that the part of Bo increases with the current, but the magnetization has a maximum value.

Consequently the magnetic field is greater because the magnetization of the material is added

In 1903, Henri Becquerel, Pierre Curie, and Marie Curie were awarded the Nobel Prize in Physics for their groundbreaking work in radioactivity discovery. Their collaboration revolutionized physics and science.

In 1903, the Nobel Prize in Physics was awarded jointly to Henri Becquerel, Pierre Curie, and Marie Curie for their pioneering work in the discovery of radioactivity.

Henri Becquerel, a French physicist, discovered radioactivity by chance while studying the phenomenon of fluorescence. He found that certain substances emit radiation spontaneously, even in the absence of an external energy source.

Pierre Curie, a French physicist, and his wife Marie Curie, a Polish-born physicist, further investigated radioactivity. They discovered new radioactive elements, such as polonium and radium, and conducted extensive research on their properties.

Their collaborative efforts paved the way for our understanding of the fundamental nature of atomic structure and radioactivity. Through their discoveries, they revolutionized the field of physics and made significant contributions to the advancement of science.

Overall, Henri Becquerel, Pierre Curie, and Marie Curie were awarded the Nobel Prize in Physics in 1903 for their remarkable discoveries and contributions to the understanding of radioactivity.

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Explanation:

TEMPLE HINDUS MOSQUE MUSLIMS TEMPLE HINDUS MOSQUE MUSLIMS

Answer:

The second law of a vibrating string states that for a transverse vibration in a stretched string, the frequency is directly proportional to the square root of the string's tension, when the vibrating string's mass per unit length and the vibrating length are kept constant

The law can be expressed mathematically as follows;

\(f = \dfrac{1}{2\cdot l} \cdot \sqrt{\dfrac{T}{m} }\)

The second law of the vibrating string can be verified directly, however, the third law of the vibrating string states that frequency is inversely proportional to the square root of the mass per unit length cannot be directly verified due to the lack of continuous variation in both the frequency, 'f', and the mass, 'm', simultaneously

Therefore, the law is verified indirectly, by rearranging the above equation as follows;

\(m = \dfrac{1}{ l^2} \cdot \dfrac{T}{4\cdot f^2} }\)

From which it can be shown that the following relation holds with the limits of error in the experiment

m₁·l₁² = m₂·l₂² = m₃·l₃² = m₄·l₄² = m₅·l₅²

Explanation:

The question is incomplete, the complete question is;

Water has a specific heat of 4.186 J/g°C, and ethanol has a specific heat of 2.450 J/g°C. Based on this information, which best compares water and ethanol?

It requires more heat to raise the temperature of a gram of ethanol by 1°C.

There are more molecules in a gram of water.

Ethanol has a lower formula mass.

Water has more protons and neutrons in its nuclei.

Answer:

There are more molecules in a gram of water.

Explanation:

Let us recall that the molar mass of water is 18g/mol while the molar mass of ethanol is 46 g/mol.

Hence;

1 g of water contains 18 g

There are 6.02 × 10^23/18g = 3.34 × 10^22 molecules in 1 g of water

1 g of ethanol contains 46 g

There are 6.02 × 10^23/46 g = 1.31 ×10^22 molecules

Hence, there are more molecules in 1 g of water than in 1g of ethanol.

Answer:

there are more molecules in 1 g of water than in 1g of ethanol.

Explanation:

edge 23

The hertz (Hz) is the SI frequency unit named after the German physicist Heinrich Hertz; one hertz means that an event occurs once every second.

The frequency of a repeating event is the number of occurrences per unit of time. It is distinct from angular frequency and is sometimes referred to as temporal frequency. The unit of frequency is hertz, which equals one event per second. The number of waves that pass through a fixed point in a given amount of time is described by frequency. So, if a wave takes half a second to pass, the frequency is 2 per second. The frequency is 100 per hour if it takes 1/100 of an hour.

Here,

The hertz (Hz) is the SI unit of frequency, named after the German physicist Heinrich Hertz; one hertz means that an event occurs once every second.

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Answer:

Wandering Slowly with no pattern

Explanation:

I apologize to those who got it wrong from the first person.

The Earth's magnetic pole is wandering slowly with no pattern. Then the correct option is D.

Magnetic poles are the points near the extremities of the axis of rotation of the Earth or another celestial body where a magnetic needle dips vertically.

At either end of a magnet, the magnetic pole is where the applied magnetic field is strongest. An imaginary basic particle known as a magnetical monopole may be referred to as a magnet's pole. A unique type of magnet is the magnetism poles of celestial bodies.

The north magnetism pole of the earth Today is located where the north arrow is on a path leading downhill.

The magnetic pole is located far away from the geographic pole.

Earth's magnetic pole is defined as wandering slowly with no pattern.

Thus, the correct option is D.

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The drops per minute for vancomycin infusion are approximately 15,000 gtt / 120 min = 125 gtt/min

To calculate the drops per minute for the vancomycin infusion, we need to consider the prescribed dose, volume, and infusion time. In this case, the provider orders 1 g of vancomycin in 250 ml of 0.9% normal saline over 2 hours, and the selected tubing delivers 60 gtt/ml.

First, we need to calculate the total number of drops needed for the infusion. We multiply the volume (250 ml) by the drop factor (60 gtt/ml):

250 ml * 60 gtt/ml = 15,000 gtt

Next, we need to determine the infusion time in minutes. Since the infusion is administered over 2 hours, we multiply by 60 to convert it to minutes:

2 hours * 60 min/hour = 120 min

Finally, we divide the total number of drops (15,000 gtt) by the infusion time (120 min) to obtain the drops per minute:

15,000 gtt / 120 min = 125 gtt/min

Rounding to the nearest whole number, the drops per minute for the vancomycin infusion would be approximately 125 gtt/min.

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The speed of longitudinal waves in Rod A will be 0.632 times greater than that of Rod B.

The speed of longitudinal waves in a material is dependent on its bulk modulus and density. Since both rods have the same bulk modulus, the denser rod will have a higher speed of longitudinal waves. The factor by which the speed is greater can be calculated using the following formula:

Speed = (Bulk Modulus / Density)^0.5

Let's denote the denser rod as Rod A and the less dense rod as Rod B. If the density of Rod A is 2.5 times that of Rod B, then we can say that:

Density of Rod A = 2.5 x Density of Rod B

Using this information, we can calculate the factor by which the speed of longitudinal waves in Rod A is greater than that of Rod B:

Speed of Rod A / Speed of Rod B = (Bulk Modulus / Density of Rod A)^0.5 / (Bulk Modulus / Density of Rod B)^0.5

= (Density of Rod B / Density of Rod A)^0.5

= (1/2.5)^0.5

= 0.632

Therefore, the speed of longitudinal waves in Rod A will be 0.632 times greater than that of Rod B.

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Answer:

b. d. f.

Explanation:

Got it right on Edge

Answer:

2. Gina gathers information about a court case.

4. Hana interviews and advises a person who has been accused of a crime.

6. Dewayne creates the paperwork for a business contract.

The soil loss in  \(Mg ha^{-1}\) (Ton/ha) if the bulk density of the soil is 1.01  \(Mg m^{-3}\)  is option a. 0.202 Mg/ha.

For expressing the soil loss in \(Mg ha^{-1}\), need to convert the units appropriately. First, convert the soil loss from millimetres (mm) to meters (m) by dividing it by 1,000 (1 mm = 0.001 m). Thus, the soil loss is 0.0002 m.

Next, calculate the volume of soil lost per unit area (ha). The volume can be obtained by multiplying the soil loss (0.0002 m) by the area (ha). Since the bulk density of the soil is given as 1.01 \(Mg m^{-3}\), can convert the volume to mass by multiplying it by the bulk density.

Using the formula:

Soil loss (Mg ha-1) = Soil loss (m) × Bulk density (\(Mg m^{-3}\)) × Area (ha)

Substituting the values:

Soil loss (\(Mg ha-1\)) = 0.0002 m × 1.01 \(Mg m^{-3}\) × 1 ha

Calculating the result:

Soil loss (\(Mg ha-1\)) = 0.0002 × 1.01 = 0.000202 \(Mg ha-1\)

Therefore, the correct answer is option a. 0.202 Mg/ha.

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The bottom chords do not usually need the verticals, since the bottom chords are not subjected to bending loads and the bottom chords only go into compression under severe wind suction that overcomes the dead weight of the structure.

Why the bottom chords not usually need verticles?

Truss is a building structure that is usually composed of several triangular units made of straight bars. The triangle shape helps distribute the weight evenly across the structure, making it much stronger than a traditional beam or other type of structure. The Warren truss is a common type of truss used in construction and engineering projects that is used for its strength and durability.

Modified Warren Truss: It is a variation of the Warren truss that includes vertical web members that are added to the structure to help support the top chord and reduce the span of the structure. This reduces the amount of bending stress that is put on the top chord and helps to keep the structure stable and secure.

Vertical webs: The vertical webs are the diagonal members that are added to the Modified Warren Truss. These help to brace the top chord against buckling upward and downward and support parts of the top chord, thereby reducing the span and associated bending stress of the top chord under the uniform gravity force of the decking resting on the top chord of the truss.

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In the late 19th century, studies of spectral lines and certain other phenomena were conducted, which helped in the development of quantum mechanics. The Bohr Model of the atom was the first atomic model to describe the atom's internal structure. It became clear, however, that the Bohr model was only successful for atoms with one electron, such as hydrogen. Atoms with more than one electron were more difficult to explain with this model.

Therefore, it became necessary to come up with a new model of the atom that could explain atoms with more than one electron. The quantum-mechanical model of the atom became necessary to overcome the limitations of the classical physics. According to classical mechanics, electrons should release electromagnetic radiation as they move in their orbits, which causes their orbit to collapse and the electrons to spiral into the nucleus. This theory was unable to explain the stability of atoms with more than one electron. As a result, the quantum-mechanical model of the atom was developed to overcome this limitation. The quantum-mechanical model is a model of the atom that combines quantum mechanics with classical mechanics.

In the quantum-mechanical model of the atom, electrons are not assumed to move in specific orbits. Rather, they move in orbitals, which are regions of probability where electrons are likely to be found. The quantum-mechanical model is a more accurate representation of the behavior of electrons in atoms. This is because it takes into account the wave-like properties of electrons, which classical mechanics does not. The quantum-mechanical model of the atom is essential for our understanding of chemical bonding. Chemical bonding is the process by which atoms combine to form molecules. The properties of a molecule depend on the arrangement of its atoms and the arrangement of electrons around the atoms.

The quantum-mechanical model allows us to predict the arrangement of electrons in molecules, which is essential for understanding chemical bonding. In conclusion, the quantum-mechanical model of the atom became necessary because the classical mechanics were unable to explain the behavior of electrons in atoms with more than one electron. The quantum-mechanical model is more accurate than the classical mechanics and has become essential to our understanding of chemical bonding.

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The ray of light reflects at an angle of 40° from the mirror.

The angle of incidence of a ray of light should be equal to the angle of reflection as is stated by the first law of reflection. That is the reason why the ray from the candle reflect at 40° which is equal to the angle of incidence.

The bouncing back of light from a smooth surface is called reflection.

The angle at which a ray of light is incident on a surface or strikes a surface is called angle of incidence.

The angle at which a ray of light reflects from a smooth surface after its incidence is called angle of reflection.

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The space between the screen fringes will be closed if the complete apparatus is submerged in water.

The space between two consecutive bright spots (maximas, when constructive interference occurs), or two consecutive dark patches, is known as the fringe width (minimas, where destructive interference occurs). All of the fringes in Young's double-slit experiment are the same length. The formula yields the fringe width. β = λD/d. Because it depends on L, the spacings between various fringes get smaller as the slit distance gets bigger. Since the space between various fringes is wavelength dependent, increasing the light's wavelength also increases that separation.

In comparison to air, water has a shorter wavelength of light. Therefore, when the device is submerged in water, the fringe width will diminish.

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The period of y for two satellites that are being watched as they orbit the planet is 22.63 times, and if the period of rotation of satellite x is T, satellite y.

Is four times as far from the Centre of the earth as satellite x. A satellite, often known as an artificial satellite, is a spacecraft that has been put into orbit on purpose. With the exception of passive satellites, most spacecraft have a method for producing electricity for the electronics they carry, such as solar cells or radioisotope thermoelectric generators. From above the Northern Hemisphere, Earth circles the Sun in a counterclockwise manner at an average distance of 149.60 million kilometres. It takes 365.256 days to complete one orbit.

Tx/Ty = (rx/ry) 3/2 = (8/1) 3/2 = 8 3/2 where Tx/Ty = (rx/ry) 3/2 =

X's revolution lasts for 8/3 = 22.63 times as long as Y does

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