When you sneeze, the air in your lungs accelerates from rest to 155 km/h in approximately 0.70 s . what is the acceleration of the air in m/s2?

Answer:

5.09 m/s

Explanation:

The velocity of the projectile the moment it was launched, rounded to the nearest hundredth, is

5.09 m/s.

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Final answer:

The friction force impeding the box's motion is 4.24 N. The coefficient of friction is 0.106.

Explanation:

To find the friction force impeding the motion of the box, we need to use the equation:

Ffriction = μmgcosθ

Where Ffriction is the friction force, μ is the coefficient of friction, m is the mass of the box, g is the acceleration due to gravity, and θ is the angle of the incline.

Using the given values, we can substitute them into the equation:

Ffriction = (0.0300)(18.0 kg)(9.8 m/s²)cos(34.0°) = 4.24 N

So, the friction force impeding the motion of the box is 4.24 N. To find the coefficient of friction, we need to rearrange the equation:

μ = Ffriction / (mgcosθ)

Substituting the known values:

μ = 4.24 N / (18.0 kg)(9.8 m/s²)cos(34.0°) = 0.106

Therefore, the coefficient of friction is 0.106.

Answer : F = 9800 N

Explanation :

It is given that,

The spring constant  for the industrial scale at the junkyard, k = 39,200 N/m

Displacement of spring, x = 25 cm = 0.25 m

According to Hooke's law, the force applied on spring is given by the following relation :

F = -k x

Negative sign shows the force is applied in opposite direction.

[tex]F = -39,200\ N/m\times 0.25\ m[/tex]

So, [tex]F=-9800\ N[/tex]

[tex]|F|=9800\ N[/tex]

Hence, this is the required solution.

Answer:

net force = mass × acceleration

F= ma

a = F/M

a = 6f/2m

a= {3f/m} ms-²

Explanation:

Answer:

Hypothesis.

Explanation:

Hypothesis is defined as the assumption or can be say that an idea that is proposed for the sake of an argument so that it can be tested or might be occur in future.

A hypothesis is basically tentative. It is usually made an assumption for the experiment to be tested.

Basically Randy made a hypothesis by which he thinks that he has an idea but he is not sure about that.

Final answer:

The question involves applying Newton's laws of motion and universal gravitation in a physics context to determine the gravitational acceleration and accordingly the weight of objects on an unknown planet.

Explanation:

The situation described involves calculating forces and understanding the principles of motion and gravity on an unknown planet, which falls under the subject of physics. Specifically, it looks at the application of Newton's laws of motion and universal gravitation.

Using the given information from the question, we can deduce certain characteristics of the planet's gravitational field. The force exerted, in combination with the mass of the tool and distance traveled, allows us to calculate acceleration using Newton's second law of motion, F = ma. Additionally, the time taken for the object to fall a certain distance on this planet will enable us to determine the planet's gravitational acceleration, which can be compared to Earth's acceleration due to gravity of approximately 9.80 m/s².

It is important to calculate the acceleration correctly because it impacts subsequent calculations involving force and weight. For instance, with Newton's second law, the net force on a free-falling object without air resistance is simply its weight. This relationship is crucial for determining an object's weight on the unknown planet.

To apply these principles to the scenario, it is essential to use the provided data to determine the gravitational acceleration on the unknown planet. Let's take the second part of the question, which describes an object falling from a given height in a specific amount of time. This would directly give us the gravitational acceleration of the planet, using the formula for the motion of objects under gravity: s = ut + ½at². Once we have the gravitational acceleration, we could then find the weight of objects on the planet using the formula w = mg.

If a physician believes that foul play may have been involved in a patient's death, they would typically request a medical-legal autopsy.

If a physician believes that foul play may have been involved in a patient's death, they would typically request a medical-legal autopsy. This type of autopsy is performed to investigate the cause and manner of death, with a focus on documenting any forensic evidence that could be relevant to a legal investigation. Medical-legal autopsies differ from regular medical autopsies because they involve more detailed examination and documentation to determine if any crimes were committed.

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Answer:

[tex]2.16 \cdot 10^5 N/C[/tex]

Explanation:

The strength of the electric field produced by the single charge is given by

[tex]E=\frac{kq}{r^2}[/tex]

where

[tex]k=8.99\cdot 10^9 N m^2 C^{-2}[/tex] is the Coulomb's constant

[tex]q = 6 \mu C = 6 \cdot 10^{-6} C[/tex] is the charge

[tex]r = 0.5 m[/tex] is the distance from the charge at which we want to calculate the field strength

Substituting the numbers into the equation, we find

[tex]E=\frac{(8.99\cdot 10^9 )(6 \cdot 10^{-6} C)}{(0.5 m)^2}=2.16\cdot 10^5 N/C[/tex]

Essentially, denman is an island.  11,000 feet is the maximum altitude of Denman Orchard.

An orchard is indeed a planned planting of shrubs or trees that is kept up for the purpose of producing food. Trees that produce fruit or nuts are often cultivated in orchards for commercial purposes.

Large gardens may include orchards as a feature, where they serve both a decorative and functional function. Although it is situated on a smaller, non-commercial scale or may emphasis berry bushes rather than fruit trees, a fruit garden and an orchard are typically interchangeable terms. Essentially, Denman is an island. 11,000 feet is the maximum altitude of Denman Orchard.

Therefore, 11,000 feet is the maximum altitude of Denman Orchard.

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Denman Orchard reaches an altitude of about 200 yards in a fictional context, while the tallest real tree in Canada mentioned is 314 feet tall.

The maximum altitude of the fictional location known as Denman Orchard, described in a fantastical passage, is approximately 200 yards above the level plateau mentioned. This is part of an imaginative narrative and not a real-world geographical feature.

In contrast, a real-world example is provided by Randy's search for a tall tree on Vancouver Island. The tree's reported height is 314 feet, which, if accurate, would make it the tallest tree in Canada.

If the rock has a mass of 1 kg then the speed of the rock would have been 19.6 m / s after it has fallen for two seconds.

There are three equations of motion given by  Newton ,

v = u + at

S = ut + 1/2×a×t²

v² - u² = 2×a×s

As given in the problem If the rock has a mass of 1 kg , we have to find out  which is the speed of the rock after it has fallen for two seconds

By using the second equation of the motion for the vertical direction,

v = u + gt

v = 0 + 9.8 × 2

v = 19.6 m / s

Thus , If the rock has a mass of 1 kg then the speed of the rock would have been 19.6 m / s after it has fallen for two seconds.

Learn more about equations of motion here, refer to the link given below ;

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Using the principles of projectile motion, we calculate the horizontal distance travelled by Adam using his initial velocity, launch angle, and the constant for gravitational acceleration.

To calculate the distance Adam lands from his initial position, we need to use the principles of physics, specifically those of projectile motion. The horizontal distance (range) in a projectile motion can be calculated using the formula R = (v²sin(2θ))/g, where v is the initial velocity, θ is the launch angle, and g is the gravitational acceleration (9.8 m/s²).

Substituting the given values, we get R = ((30 m/sec)²sin(2*25))/9.8 m/s². This should give you the horizontal distance Adam travels in meters.

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Answer:

Explanation: Increasing friction between surface have so many good reasons such as - generating more heat between surfaces, avoiding slippage from smooth surfaces, reducing speed of vehicles. Friction force is the force automatically acting in opposite direction of motion. Friction can be dry friction force and fluid friction force depending upon the medium of motion of object.

The gravitational force between two planets would increase by a factor of nine if the masses of both planets are tripled, while the distance between them stays the same.

The student is asking about the effect on gravitational force when the masses of two planets are tripled but the distance between them remains constant. According to Newton's law of gravity, the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

If both masses are tripled, the gravitational force becomes 3  imes 3 times larger because the force depends on the product of the two masses. Since the distance does not change, the ratio of the gravitational force after tripling the masses would be 9:1 when compared to the initial force (3 imes 3 = 9). Therefore, the gravitational force increases by a factor of nine

The relationship between frequency and wavelength of light is given by:

[tex]f=\frac{c}{\lambda}[/tex]

where

f is the frequency

c is the speed of the light

[tex]\lambda[/tex] is the wavelength

Therefore, from this equation we see that frequency is inversely proportional to wavelength: the longer the wavelength, the smaller the frequency, and the shorter the wavelength, the higher the frequency.

The wavelength and frequency of light are inversely proportional to each other. The higher the frequency of light, the shorter its wavelength. Also, high-frequency waves carry more energy than lower-frequency waves.

The wavelength and frequency of light are inversely proportional to each other. This means if the wavelength of light increases, its frequency decreases, and vice versa. This relationship can be expressed as λf = c, where λ represents wavelength, f represents frequency, and c is the speed of light. For instance, the different colors of visible light have specific frequencies and wavelengths associated with them. Radio waves, which have longer wavelengths, have lower frequencies, while visible light with shorter wavelengths have higher frequencies. This relationship remains constant irrespective of the moving source or observer.

In a given medium under fixed conditions, the higher the frequency, the smaller the wavelength. Also, waves with higher frequencies carry more energy than lower-frequency waves. This energy is delivered as elementary particles called photons. Therefore, higher-frequency waves deliver more energetic photons compared to lower-frequency waves.

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To find the speed at which cart B is moving toward point q, we can set up a proportion using the distances and speeds of the two carts connected by a rope. By substituting the known values into the equation, we can solve for the speed of cart B.

To find the speed at which cart B is moving toward point q, we can use the concept of relative motion. Since there is a rope connecting the carts, their speeds are related. We can set up a proportion using the distances and speeds:

(Distance traveled by cart A) / (Speed of cart A) = (Distance traveled by cart B) / (Speed of cart B)

Since we know that cart A is being pulled away from q at a speed of 3 ft/s and is 5 ft from q, we can substitute these values into the equation and solve for the speed of cart B:

(5 ft) / (3 ft/s) = (Distance traveled by cart B) / (Speed of cart B)

From here, we can solve for the speed of cart B.

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Answer;

-Six

The National Ambient Air Quality Standards (NAAQS) are maximum allowable levels for six harmful pollutants. sixteen six sixty ten.

Explanation;

-The Clean Air Act requires EPA to set National Ambient Air Quality Standards (NAAQS)  for six common air pollutants (also known as "criteria air pollutants.  These pollutants are found all over the U.S. They can harm your health and the environment, and cause property damage.

-These pollutants are particulate matter, photochemical oxidants, carbon monoxide, sulfur oxides, nitrogen oxides and lead. They are called criteria air pollutants because its sets NAAQS for them based on the criteria, which are characterizations of the latest scientific information regarding their effects on health or welfare.

To calculate the kinetic energy of the whole bicycle, use the formulas for kinetic energy of the frame and wheels. The kinetic energy of the frame is calculated using mass and velocity, while the kinetic energy of each wheel is calculated using moment of inertia and angular velocity. Sum up the kinetic energies of the frame and the wheels to get the total kinetic energy of the bicycle.

To calculate the kinetic energy of the whole bicycle, we need to consider the kinetic energy of the frame and the kinetic energy of the wheels.

The kinetic energy of the whole bicycle when it is moving forward at 3.55 m/s is approximately 139.279 J.

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