In figure 1 airbag inflation rates are represented by the

Answer:

If the scale readings are different then there will be a net force on the person attached to the scales:

Consider any point on the rope - if the forces in each direction are the same there is no acceleration of the rope

F = Δm * a        for any portion of the rope with mass Δm

If any portion of the rope is accelerated, the person attached to the rope must be accelerated

It is important to note that the debate between scientific realism and antirealism is ongoing and complex, with various nuances and perspectives within each position. Different philosophers of science and scientists may hold different views on the nature of scientific terms and their relationship to reality.

According to a scientific realist perspective, scientific terms for unobservable phenomena such as "atom" and "black hole" are seen as referring to entities that truly exist in reality. Scientific realists believe that scientific theories and concepts accurately capture aspects of the world, including unobservable entities and phenomena. They argue that scientific theories provide the best explanation of the natural world and aim to describe the underlying structure and mechanisms of reality.

On the other hand, scientific antirealists hold a different view. They argue that scientific terms that refer to unobservable phenomena do not necessarily correspond to something that exists independently in reality. Antirealists often emphasize the instrumentalist view of science, which suggests that scientific theories are simply tools or frameworks that help us organize and predict observable phenomena, without making claims about the ultimate nature of reality.

Antirealists may argue that scientific theories are subject to revision and change over time as new evidence emerges, suggesting that the terms used to describe unobservable phenomena are not fixed and may not have a one-to-one correspondence with actual entities in reality. They may also highlight the role of social and cultural factors in shaping scientific knowledge, suggesting that scientific terms are influenced by human conventions and interpretations.

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When a parallel beam of light passes through a convex lens, the rays become farther from one another when the come out. This process of rays is called ''to diverge''. The concave lens makes rays of light diverge, so it is called diverging lens.

The person would suffer a shock in becomes part of an electrical circuit.

When a person becomes part of an electrical circuit, they can suffer a shock if the voltage of the circuit is high enough to cause injury. This occurs when the electrical current passes through the person's body, causing disruption of their normal body functions.

The severity of the shock depends on the amount of current passing through their body and its duration. In some cases, the person may experience temporary or long-term memory loss due to the shock.

When a person becomes part of an electrical circuit, it is important to take proper safety precautions to prevent injury.

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When two rods made of substance x are rubbed with substance y, they become charged. This process is known as charging by rubbing or charging by friction. When one of the charged rods is free to move, it will be attracted to the other rod, and they will interact by exerting an electrostatic force on each other.

The interaction between the rods is due to the transfer of charged particles, or electrons, from one rod to the other during the rubbing process. As a result, one rod becomes positively charged while the other becomes negatively charged. Opposite charges attract, so the positively charged rod will be attracted to the negatively charged rod. This attraction is the electrostatic force between the two charged rods.

To summarize, when two rods made of substance x are rubbed with substance y and one of them is free to move, they will interact by attracting each other due to the electrostatic force between their opposite charges.

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For a given screen to object distance, there are two lens positions where a clear image forms due to the properties of convex lenses.

When an object is placed in front of a convex lenses, the lens refracts the light rays and forms an image. The position of the image depends on the position of the object and the properties of the lens. For a given screen to object distance, there are two lens positions where a clear image forms.

The reason for this is that a convex lens can produce both real and virtual images. When the object is placed beyond the focal point of the lens, a real image is formed on the opposite side of the lens. As the lens is moved closer to the object, the real image moves further away from the lens until it disappears at a specific point. This point is known as the first focal point of the lens.

When the lens is moved even closer to the object, a virtual image is formed on the same side of the lens as the object. As the lens is moved even closer, the virtual image moves further away from the lens until it disappears at a specific point. This point is known as the second focal point of the lens.

Thus, for a given screen to object distance, there are two lens positions where a clear image forms: one where a real image is formed and one where a virtual image is formed. These positions are equidistant from the lens and are known as the conjugate points of the lens. The distance between the conjugate points is known as the focal length of the lens.

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Answer:

ExplaMeasurements of the height of various plants in an experiment are called (Data).nation:

Answer:

visible rock fragments

Explanation:

sedimentary rocks start as sediments carried in rivers and deposited in lakes and oceans then get buried so the sediments lose water and become cemented to form the rock.

Answer:

c

Explanation:

Answer:

High current flow

Explanation:

Generally , the measuring instruments used by technician also have some resistance, though its value is very low  . So when high current is present in the circuit , that current also passes through the instrument which creates a good potential drop across the instrument . So the external voltage used in the circuit measures less voltage .

Answer:

A) having each person listen to just 1 song instead of 5.

Explanation:

Ravi could accurately use the outcome to compare the hearing capacities of his friends by this experiment if appropriate precautions are observed.

Playing 5 well known songs simultaneously could result to the interference of sounds when each participant moves away from the player. Which could naturally cause the variation in volume of the songs played with respect to the increasing distance.

Therefore, the reliability of the result from this experiment can be increased if each person listen to just 1 song instead of 5 at a predetermined volume. Each participant would be able to focus on hearing a song during the experiment.

Answer:

To find the work done in moving the particle from the origin to x = 2, we need to integrate the force over the given interval.

The work done (W) is calculated by integrating the force function with respect to displacement (dx) from the initial position (0) to the final position (2):

W = ∫(0 to 2) (10x³ - 5) dx

Integrating the force function, we get:

W = ∫(0 to 2) (10x³ - 5) dx = [2.5x⁴ - 5x] evaluated from 0 to 2

Now, substituting the upper limit (2) and lower limit (0) into the equation:

W = [2.5(2)⁴ - 5(2)] - [2.5(0)⁴ - 5(0)]

 = [2.5(16) - 10] - [0 - 0]

 = 40 - 10

 = 30

Therefore, the work done in moving the particle from the origin to x = 2 is 30 units of work.

Explanation:

The time that takes for the train that is traveling with an initial velocity of 20.1 m/s to stop is 402 seconds.    

The time that will take for the train to stop can be calculated with the following kinematic equation:

\( v_{f} = v_{i} + at \)   (1)

Where:

\( v_{f}\): is the final velocity = 0 (when it stops)

\( v_{i}\): is the intial velocity = 20.1 m/s

a: is the acceleration = -0.0500 m/s²

t: is the time =?

By solving equation (1) for t, we have:

\( t = \frac{v_{f} - v_{i}}{a} = \frac{0 - 20.1 m/s}{-0.0500 m/s^{2}} = 402 s \)

Therefore, it will take 402 seconds for the train to stop.  

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The velocity of the canoe after the woman jumps is 2.99 m/s to the left.

The velocity of the canoe is calculated by applying the principle of conservation of linear momentum as shown below.

m₁u₁  +  m₂u₂  =  v (m₁ + m₂)

where;

(53)(3.5) + 62(u) = 0(53 + 62)

185.5 + 62u = 0

-62u = 185.5

u = -185.5 / 62

u = -2.99 m/s

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The block will not move.

The amount of force that would be required to move the block is 73.5 N

Force can be defined as the product of mass and acceleration.

The S.I unit of force is Newton (N)

For the block to move, The horizontal force applied to the block but be greater than the static friction of the floor on the block.

Where:

From the question,

Given:

Substitute these values into equation 1

Comparing F and F', It can be seen that

There, The block will not move.

The amount of force that would be required to move the block is 73.5 N

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Answer:

15 m/s

Explanation:

Speed(m/s) = distance(m)/time(s)

distance = 216 km = 216,000 m

time = 4 hours = 14,400 s

speed = 216000/14400 = 15 m/s

Answer:

V=S/T

V=216km/4hr

V=54km/hr

Explanation:

1km/hr = 5/18 m/s

54km/hr= X

X=5/18m/s * 54km/hr

         1km/hr

X=15m/s(approximately)

a) The speed of the mass as it passes through the vertical is 4.52 m/s.

b) The tension in the string when it passes through the vertical is 15.66 N.

c) The work done by gravity by the time the string is in the vertical position for the first time is -11.02 J.

a) To calculate the speed of the mass as it passes through the vertical, we can use the principle of conservation of energy. Initially, the mass is at rest, so all its energy is potential energy. As it falls, this potential energy is converted into kinetic energy. The potential energy at the initial position is given by mgh, where m is the mass (1.59 kg), g is the acceleration due to gravity (9.8 m/s²), and h is the vertical displacement (h = 0.7 m * sin(48.0°)). The kinetic energy at the vertical position is given by (1/2)mv², where v is the speed we need to find. Equating the two energies, we can solve for v and find that it is 4.52 m/s.

b) The tension in the string when the mass passes through the vertical can be determined by analyzing the forces acting on the mass at that point. In this case, the tension in the string and the weight of the mass are the only forces involved. The weight of the mass is given by mg, where g is the acceleration due to gravity. Since the mass is in equilibrium at that moment, the tension in the string must be equal in magnitude to the weight of the mass. Thus, the tension is 15.66 N (1.59 kg * 9.8 m/s²).

c) The work done by gravity can be calculated using the formula W = mgh, where W is the work done, m is the mass, g is the acceleration due to gravity, and h is the vertical displacement. In this case, the work done by gravity is negative because gravity is acting in the opposite direction of the displacement. The vertical displacement h is equal to the length of the string (0.7 m) multiplied by the sine of the angle (sin(48.0°)). Plugging in the values, we find that the work done by gravity is -11.02 J.

When calculating the speed of the mass as it passes through the vertical, we make use of the conservation of energy principle. This principle states that the total mechanical energy of a system remains constant if no external forces are acting on it. In this case, the initial potential energy of the mass is converted into kinetic energy as it falls. By equating these two energies, we can determine the speed of the mass.

To find the tension in the string when the mass passes through the vertical, we consider the forces acting on the mass at that point. Since the mass is in equilibrium, the tension in the string must be equal in magnitude to the weight of the mass. Therefore, the tension can be found by calculating the weight of the mass.

When calculating the work done by gravity, we use the formula W = mgh, where W represents the work done, m is the mass, g is the acceleration due to gravity, and h is the vertical displacement. In this case, the work done by gravity is negative because gravity acts in the opposite direction of the displacement. By plugging in the given values, we can determine the work done by gravity when the string is in the vertical position for the first time.

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Answer:

c. 3/2 mg

Explanation:

Given that the acceleration of an elevator is 1/2 g upward.

The reading on the scale of the elevator is the net external force acting on the elevator.

Let the force F acting on the elevator as shown,

By using Newton's 2nd law, \(F_{net}=ma\)

where, \(F_{net}\) is the net force acting on the elevator.

m is the mass of the elevator,

a is the acceleration of the elevator, as given a=1/2 g upward.

So, \(F_{net}=m\times \frac 1 2 g\)

\(F-mg=m\times \frac 1 2 g \\\\F=mg+ \frac 1 2 mg \\\\F= \frac 3 2 mg.\)

So, the reading on the scale in the elevator is \(\frac 3 2 mg\).

Hence, option (c) is correct.

Answer:

it's 40m hun <3

Explanation:

just read up from 2 seconds until you hit the line then read across on the y-axis to what number it is

Kieran had a greater average speed than Jevon. Let us go into more detail in the explanation below. To compare the average speeds of Kieran and Jevon, we need to find out the speed of each person.

We can use the formula speed = distance/time. Kieran ran 8 laps in 18 minutes, which means he ran 8/18 = 0.44 laps per minute. To find out Kieran's speed, we need to multiply this by the length of one lap. If we assume that the length of one lap is 400 meters, then Kieran's speed is:0.44 laps per minute × 400 meters per lap = 176 meters per minute Jevon ran 6 laps of the track, but we don't know how long it took him.

Therefore, we can't calculate his speed directly. However, we can still compare his speed to Kieran's by using ratios. If we assume that Jevon ran the same length of track as Kieran, then we can write the following equation: Kieran's speed/Jevon's speed = Jevon's time/Kieran's time.

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Answer:

Star trails reflect Earth's rotation, or spin, around its axis. The Earth makes a complete rotation relative to the backdrop stars in a period of about 23 hours and 56 minutes.

Answer:

temperature of about  2.72548 ± 0.00057 K.

Explanation:

The cosmic background radiation is an electromagnetic radiation that remains from an early stage of the universe during the big bang. It was accidentally discovered in 1965 by two American radio astronomers Arno Penzias and Robert Wilson. The radiation was given off before the formation of stars and planets, when the universe was young, denser, hotter, and filled with a uniform glow from a white-hot fog of hydrogen plasma, which cooled down as the universe expanded. From calculations, it was deduced that the radiation had a temperature of 2.72548±0.00057 K, which is close to the temperature of the universe during its formation.

Answer:

A. respiration.

Explanation:

Cellular respiration can be defined as a series of metabolic reactions that typically occur in cells so as to produce energy in the form of adenosine triphosphate (ATP). During cellular respiration, high energy intermediates are created that can then be oxidized to make adenosine triphosphate (ATP). Therefore, the intermediary products are produced at the glycolysis and citric acid cycle stage.

Additionally, mitochondria provides all the energy required in the cell by transforming energy forms through series of chemical reactions; breaking down of glucose into Adenosine Triphosphate (ATP) used for providing energy for cellular activities in the body of living organisms.

Basically, oxygen goes into the body of a living organism such as plants, humans and animals when they breathe while glucose is absorbed by the body when they eat.

Hence, the conversion of sugar to energy in the presence of oxygen is respiration.

Answer:

By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.

Explanation:

i got that from google hopefully it works

Radio waves, which have wavelengths billions of times longer than those of visible light, are at one extreme of the electromagnetic spectrum. Gamma rays, which have wavelengths billions of times smaller than those of visible light, are on the other end of the spectrum.

The lowest energy photons are found in radio waves. Radio waves lack the energy that microwaves do. There are even more in infrared, which is followed by visible, ultraviolet, X, and gamma rays. The frequency f of electromagnetic waves, or, equivalently, the wavelength c/f, is used to classify them. The wavelengths of visible light span from 400 nm to 700 nm. The wavelength and frequency of violet light are 400 nm and 7.5*\(10^{14}\)Hz, respectively.

Electromagnetic waves include radio waves, television waves, and microwaves. The only thing separating them is wavelength. An example of electromagnetic radiation is radio waves. The wavelength of a radio wave is substantially greater than that of visible light. Radio waves are widely used by people for communication. Both rectangular and circular antennas are used by this radio tower to send and receive radio frequency energy.

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Answer:

a) Please find attached the required drawing of light passing through the lens

By the use of similar triangles;

The image distance from the lens = 26 cm

The height of the image = 14 cm

c) The image distance from the lens = 26 cm

The height of the image = 14 cm

Explanation:

Question;

a) Determine the image distance and the height of the image

b) Calculate the image position and height

The given parameters are;

The height of the object, h = 14 cm

The distance of the object from the mirror, u = 26 cm

The focal length of the mirror, f = 13 cm

The location of the object = 2 × The focal length

Therefore, given that the center of curvature ≈ 2 × The focal length, we have;

The location of the object ≈ The center of curvature of the lens

The diagram of the object, lens and image created with MS Visio is attached

From the diagram, it can be observed, using similar triangles, that the image distance from the lens = The object distance from the lens = 26 m

The height of the image = The height of the object - 14 cm

b) The lens equation is used for finding the image distance from the lens as follows;

\(\dfrac{1}{u} + \dfrac{1}{v} = \dfrac{1}{f}\)

Where;

v = The image distance from the lens

We get;

\(v = \dfrac{u \times f}{u - f}\)

Therefore;

\(v = \dfrac{26 \times 13}{26 - 13} = \dfrac{26 \times 13}{13} = 26\)

The distance of the image from the lens, v = 26 cm

The magnification, M =v/u

∴ M = 26/26 = 1, therefore, the object and the image are the same size

Therefore;

The height of the image = The height of the object = 14 cm.

The given statement "If you see fire or smoke coming from your vehicle's hood, you should pull over and get away from the vehicle as soon as possible." is True.

What to do when there is smoking engine in your car?

You should take rapid action if the smoke seems to be coming from a fire under your bonnet.

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The dimension of a physical quantity is the power to which the fundamental units must be raised to, to represent it. Mass, length, time, temperature, electric current, luminous intensity and amount of substance are the fundamental quantities

Temperature is a measure of the degree of hotness or coldness of an object or substance. It is a fundamental concept in physics, chemistry, and engineering and is one of the most commonly measured physical parameters in scientific and industrial applications. The temperature of an object or substance is related to the average kinetic energy of its particles. In other words, the faster the particles are moving, the higher the temperature.  

Temperature is measured using a variety of devices, including thermometers, thermocouples, and pyrometers. The most common unit of temperature is the Celsius (°C) scale, which is based on the freezing and boiling points of water. Another commonly used scale is the Fahrenheit (°F) scale, which is used primarily in the United States.

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Average number of team members who reached their goal per day = 4.2

Number of team members that reached their goals on Monday = 5

Number of team members that reached their goals on Tuesday = 4

Number of team members that reached their goals on Wednesday = 2

Number of team members that reached their goals on Thursday = 7

Number of team members that reached their goals on Friday = 3

Total number of team members that reached their goals = 5 + 4 + 2 + 7 + 3

Total number of team members that reached their goals = 21

Average number of team members who reached their goal per day = 21/5

Average number of team members who reached their goal per day = 4.2

The maximum amount of current that would flow if a 3 V coin cell battery with an internal resistance of 16.0 Ω is short-circuited is approximately 0.1875 A.

When a battery is short-circuited, it means that the positive and negative terminals are directly connected without any external resistance. In this case, the internal resistance of the battery becomes the only limiting factor for the current flow.

The maximum amount of current that can flow through a circuit is determined by Ohm's Law, which states that current (I) is equal to the voltage (V) divided by the resistance (R): I = V/R. In a short circuit, the resistance is effectively zero, so the current becomes infinitely large. However, in reality, there is always some internal resistance present in the battery.

To calculate the maximum current in this scenario, we need to use the concept of equivalent resistance. The internal resistance of the battery (r) and the external resistance (short circuit) can be combined to form an equivalent resistance (R_eq). In this case, R_eq = r.

Given that the internal resistance of the battery is 16.0 Ω, the maximum current can be calculated by dividing the battery voltage (3 V) by the equivalent resistance: I = V/R_eq. Therefore, I = 3 V / 16.0 Ω ≈ 0.1875 A.

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Answer:

D) no loss or gain in energy

Explanation:

the energy just changes from on form to the other, energy cannot be created or destroyed

Answer:

D. no loss or gain in energy

Explanation:

it is a process of changing energy from one form to another.