What is the difference between MSwithin and MSbetween?

The distance traveled by the sprinter in meters is determined as 1.88 m.

The acceleration of the sprinter is the rate of change of velocity of the sprinter with time.

The acceleration of the sprinter is calculated as follows;

Apply Newton's second law of motion as follows;

F = ma

a = F/m

where;

a = 693 N / 64 kg

a = 10.83 m/s²

The distance traveled by the sprinter is calculated as follows;

s = ut + ¹/₂at²

where;

s = ¹/₂at²

where;

s = (0.5)(10.83)(0.59²)

s = 1.88 m

Thus, the distance traveled by the sprinter in meters is determined as 1.88 m.

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Answer:

122.5 meters

Explanation:

g = 9.8 m/s^2 (standard value of g). so the freely falling body fall during the first 5 seconds will fall 122.5 meters if there is no external force work on it in an standard environment

The distance traveled by the apply after being released is 127.45 m.

The given parameters;

time of motion of the apple, t = 5.1 s

initial velocity of the apple, u = 0

The distance traveled by the apply is calculated by applying second kinematic equation as shown below.

Assuming downward motion to be positive.

\(s = ut + \frac{1}{2} gt^2\\\\s = 0 + 0.5\times 9.8 \times 5.1^2\\\\s = 127.45 \ m\)

Thus, the distance traveled by the apply after being released is 127.45 m.

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Explanation:

On a position vs time graph (x vs t), displacement is the difference in positions (Δx = x₂ − x₁).

On a velocity vs time graph (v vs t), displacement is the area under the graph (Δx = ∫ v dt).

The vertical velocity of the projectile increases but reaches zero at the maximum height and begins to decrease.

When we talk of the projectile, we are talking about the object that is moving along a parabolic path. Hence the object that is undergoing the projectile motion is going to have a curved path. Take an instance, when you kick a soccer ball, you have to notice that the ball would tend to curve as it moves up in the air and then begins to descend. That is a typical example of a projectile motion.

Now, we have to note that at the maximum height, the vertical velocity of the object would be zero. When I throw an object up, the vertical velocity of the object would continue to increase until the object reaches the maximum height where the vertical velocity is zero and then the vertical velocity of the object begins to decrease as shown in the image.

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Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

From the calculation;

1) Melting point of indium = 171.4°

2) The resistance is 52.9 ohm

3) The power dissipated is  834 W

The temperature coefficient of resistance is a measure of how much the resistance of a material changes with temperature. It quantifies the relationship between the change in resistance and the change in temperature.

We have that;

R1/R2 = (1 + αt1)/(1 + αt2)

50/76.8 = (1 + (3.92 * \(10^-3\) * 20))/(1 +  (3.92 *\(10^-3\) * t))

0.65 = 1.0784/1 + 0.00392t

0.65(1 + 0.00392t) =  1.0784

0.65 + 0.0025t = 1.0784

t = 171.4°

P = \(V^2\)/R

R = \(V^2\)/P

R = \(230^2\)/1000

R = 52.9 ohm

The new power is;

P =\(210^2\)/52.9

P = 834 W

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a) The number of turns in the solenoid is approximately 206.

To determine the number of turns in the solenoid, we can use the formula for the magnetic field inside a solenoid, which is given by B = μ₀nI, where B is the magnetic field, μ₀ is the permeability of free space, n is the number of turns per unit length, and I is the current.

Rearranging the formula, we have n = B / (μ₀I). Substituting the given values of B = 9.00 T and I = 75.0 A, and using the value of μ₀, we can calculate the number of turns per unit length. Multiplying it by the length of the solenoid (0.500 m) gives us the total number of turns in the solenoid, which is approximately 206.

A solenoid is a coil of wire wound in a helical shape. When a current flows through the coils, it creates a magnetic field along the axis of the solenoid. The strength of the magnetic field depends on factors such as the number of turns per unit length and the current flowing through the solenoid.

In this case, we are given the magnetic field and current, and we use the formula for the magnetic field inside a solenoid to calculate the number of turns. The higher the number of turns, the stronger the magnetic field generated by the solenoid.

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Answer:

Explanation:

Given:

m = 5·10⁻²⁷ kg

V₁ = 2·10⁵ m/s

V₂ = 4·10⁵ m/s

D = 10cm = 0.10m

_______________

a - ?

The change in kinetic energy is equal to the work:

Ek₂ - Ek₁ = F·D

m·V₂² / 2 - m·V₁² / 2 = F·D

(m/2)·(V₂² - V₁²)  = F·D

Force:

F = (m/2)·(V₂² - V₁²) / D

F =   m·(V₂² - V₁²) / (2·D)

F = (5·10⁻²⁷)·( (4·10⁵)² - (2·10⁵))/ (2·0.10) ≈ 3·10⁻¹⁴ N

Answer:

2 is answer B.

3 is answer D.

3 is answer D because of the fears as to what happened with Chernobyl.

I hope this helps.

Several atmospheric factors can contribute to fatal injuries caused by excessive heat. These factors include:

1. Temperature: High ambient temperatures are a key factor in heat-related fatalities. Prolonged exposure to extreme heat can lead to heatstroke and other severe heat-related illnesses.

2. Humidity: Humidity affects the body's ability to cool itself through sweating. High humidity levels impede the evaporation of sweat, making it harder for the body to dissipate heat. This can result in a higher risk of heat exhaustion and heatstroke.

3. Heat index: The heat index takes into account both temperature and humidity to determine how hot it feels to the human body. Higher heat index values indicate an increased risk of heat-related injuries and fatalities.

4. Air quality: Poor air quality, such as high levels of pollutants or airborne particles, can exacerbate the effects of heat on the body. It can contribute to respiratory distress and other health complications, especially in individuals with pre-existing respiratory conditions.

5. Urban heat island effect: Urban areas tend to retain more heat due to the abundance of concrete, asphalt, and buildings. This can lead to higher temperatures in cities compared to surrounding rural areas, increasing the risk of heat-related injuries and fatalities.

6. Heatwave duration: The length of a heatwave can impact the severity of its effects. Prolonged exposure to extreme heat without relief or adequate cooling opportunities can escalate the risk of heat-related injuries and deaths.

It is important to monitor these atmospheric factors and take necessary precautions, such as staying hydrated, seeking shade or air-conditioned environments, and avoiding strenuous activities during periods of excessive heat, to mitigate the risks associated with fatal heat injuries.

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Answer:

4) Increase

Explanation:

Hope this helps!

If not, I am sorry.

Answer:

When work is positive, the environment does work on an object.

Explanation:

According to the work-energy theorem, the net work done by the forces on a body or an object is equal to the change produced in the kinetic energy of the body or an object.

The concept that summarizes a concept related to the work-energy theorem is that ''When work is positive, the environment does work on an object.''

Answer:

Your answer is A!

Have a good day!

Answer:

Explanation:

Carbon dioxide in photosynthesis Plants get carbon dioxide from the air through their leaves. The carbon dioxide diffuses through small holes in the underside of the leaf called stomata . (singular: stoma. plural: stomata) The lower part of the leaf has loose-fitting cells to allow carbon dioxide to reach the other cells in the leaf.

Answer:

Plants get the carbon dioxide they need from the air through their leaves. It moves by diffusion through small holes in the underside of the leaf called stomata These let carbon dioxide reach the other cells in the leaf, and also let the oxygen produced in photosynthesis leave the leaf easily.

Hope I can help you

If the velocity is changing over time, then you know there's an external force being acted on the object. You can tell this by Newton's Second Law F=MA where acceleration is change of velocity over change in time. As a result, if the velocity starts to change, then you know an external force is present on the object.

Answer:

She is likely to crash because her flight gradient is lesser than the flight gradient required gradient to avoid crashing

Explanation:

The given parameters are;

The required gradient of the plane Ashley is flying needs to reach in order to take off and not crash = 360 m/km

The initial elevation of the plane Ashley is flying = Sea level = 0 m

The goal Ashley intends to make = Elevation of 1000 m at 2.8 km. distance

∴ Ashley's goal = Traveling from sea level to 1000 m at 2.8 km horizontal distance

We have;

The gradient  = Rate of change of elevation/(Horizontal distance)

Therefore;

The gradient of Ashley's flight = (1000 - 0)/(2.8 - 0) = 357.143 m/km

The gradient of Ashley's flight ≈ 357.143 m/km which is lesser than the required 360 m/km in order to take off and not crash, therefore, she will crash.

The net acceleration experienced by riders at this point are 681.79 m/s² and 78.37 m/s² respectively.

Based on the experiment, the net acceleration that is experienced by riders at this point would be calculated by adding the centripetal acceleration (Ac) and the acceleration due to gravity (g) together.

Mathematically, the net acceleration experienced by riders at this point is given by:

Net acceleration = Ac + g

Note: Acceleration due to gravity (g) is equal to 9.8 m/s².

Substituting the given parameters into the formula, we have;

Net acceleration = 671.99 + 9.8

Net acceleration = 681.79 m/s².

In terms of Gs, we have:

Net acceleration = 68.57 + 9.8

Net acceleration = 78.37 m/s².

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Answer:

2ms-2

Explanation:

F = ma

a = F/m

= 0.5 / 0.25

= 2ms-2

Answer 2m/s^2

Explanation:

mass=0.25kg

Force =0.5N

Acceleration=force/ mass

Acceleration=0.5/0.25

Acceleration=2

Acceleration =2m/s^2

The distance between two adjacent nodes of the wave is determined as 8.04 m.

The distance between two adjacent nodes of the wave is calculated by applying the following formula;

Node to Node = λ/2

Node to Node = length of the string = 4.02 m

where;

The distance between two adjacent nodes of the wave is calculated as;

λ/2 = L

λ = 2L

λ = ( 2 )  x ( 4.02 m )

λ = 8.04 m

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Answer:

4

Explanation:

(a) The centripetal acceleration (a) if the radius is doubled without changing the particle's speed is 3.4 m/s².

(b) The centripetal acceleration (a) if the speed is doubled without changing the circle's radius is 27.2 m/s².

(a) The centripetal acceleration is given by the formula a = v²/r, where v is the speed and r is the radius of the circle.

If the radius is doubled (2r) without changing the speed, the centripetal acceleration becomes a' = v²/(2r).

Since the speed remains the same, the numerator v² remains constant. However, the denominator doubles, resulting in the centripetal acceleration being halved.

Therefore, a' = a/2 = 6.8 m/s² / 2 = 3.4 m/s².

(b) Again using the formula a = v²/r, if the speed is doubled without changing the radius, the new speed becomes 2v.

Plugging this into the formula, we get a' = (2v)²/r = 4v²/r.

Comparing this with the original formula, we can see that the centripetal acceleration is quadrupled.

Therefore, a' = 4a = 4 * 6.8 m/s² = 27.2 m/s².

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(a) Drop the thumbtack multiple times and calculate the ratio of times it landed flat side down.

(a) To gauge the likelihood that a pushpin will land with its level side down utilizing relative recurrence, you would drop the pushpin on different occasions and record how frequently it lands with its level side down versus how often it lands with its sharp side down.

Then, at that point, you would compute the proportion of the times it landed level side down to the absolute number of drops. As you rehash this interaction more times, the overall recurrence ought to join to the genuine likelihood of the pushpin arrival with its level side down.

(b) The example space of results for the pushpin comprises of two potential results: the pushpin can land either with its level side down or with its sharp side down.

(c) To make a likelihood task to this example space, you would isolate the times the pushpin arrived with its level side down (340) by the all out number of drops (500). This gives a likelihood of 0.68 that the pushpin will land with its level side down.

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When the angle of incident light moves away from 90 degrees, the average intensity of the light incident on a flat surface area diminishes. This how the incident light affect the power output of solar cell.

With an increase in light intensity, solar cells' open loop voltage, short-circuit current, and maximum output power increases. Therefore, it is clear that the solar cell outperforms at producing energy the more concentrated the light is.

The amount of energy produced will diminish as the distance between the light source and the solar cell grows. This is caused by the fact as light spreads out immediately after it departs the source, but the amount of light remains unchanged.

In order to be able to to point towards the Sun when the spaceship moves, solar panels must have a large surface area. Greater sunlight can be extracted from solar light by presenting more surface area.

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Waves share common characteristics such as wave motion, amplitude, wavelength, frequency, wave speed, and interactions with boundaries. These properties are fundamental to understanding the behavior and properties of various types of waves, including sound waves, electromagnetic waves, water waves, and seismic waves.

A characteristic of all waves is their ability to transfer energy without transferring matter. This fundamental property distinguishes waves from other forms of energy transfer, such as the movement of objects in a solid or the flow of fluids. Waves propagate through various mediums or through empty space, carrying energy from one location to another.

Waves exhibit several common characteristics, including:

1. Wave Motion: Waves involve the transfer of energy through periodic oscillations or vibrations. The particles or fields involved in the wave motion move back and forth around their equilibrium positions, transmitting the energy along the wave path.

2. Amplitude: The amplitude of a wave represents the maximum displacement or disturbance from the equilibrium position. It corresponds to the intensity or strength of the wave and can be measured as the maximum height, displacement, or value of a wave.

3. Wavelength: The wavelength of a wave is the distance between two consecutive points with the same phase or the distance covered by one complete cycle of the wave. It is commonly represented by the symbol λ and is usually measured in meters or other appropriate units.

4. Frequency: The frequency of a wave refers to the number of complete oscillations or cycles that occur per unit of time. It is denoted by the symbol f and is measured in hertz (Hz). The frequency and wavelength of a wave are inversely related and are related to the speed of the wave through the equation v = fλ, where v represents the wave velocity.

5. Wave Speed: The wave speed represents the rate at which a wave travels through a medium or through empty space. It is the product of the wavelength and the frequency of the wave and is usually denoted by the symbol v. The speed of a wave depends on the properties of the medium through which it travels.

6. Reflection, Refraction, and Diffraction: Waves can undergo interactions with boundaries or obstacles, resulting in phenomena such as reflection (bouncing off a surface), refraction (bending when passing through different mediums), and diffraction (spreading out or bending around obstacles).

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Answer:

Not testable.

Explanation:

The temperature of coffee can change, as the coffee gains or loses heat to the surroundings or the room temperature. For example, if you put a hot coffee in a cold room, the coffee will lose heat to the surroundings/room temperature, eventually making it colder.

Determining whether a power supply is bad can be crucial in troubleshooting a computer that won't turn on. The most efficient way to check is to use a power supply tester. This requires extra equipment, but it is a quick and easy method.

To use a power supply tester, unplug the power supply, remove the connector from the motherboard, plug it into the tester, and the results should be immediate. The tester will have different colored LEDs to indicate the results. If the power supply is good, all LEDs will light up, and if not, then the corresponding LED will not light up.

Another way to check if the power supply is bad is to connect a different power supply of the same or greater voltage to your computer. If the problem goes away, then it was the PSU, and if not, then further troubleshooting is required. These are the two most efficient ways to determine if your power supply is bad, and can help you quickly and accurately diagnose the issue.

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Answer:

84 kj/min = 1.4 kj/sec

Power Out / Power In = Heat Out / Heat In - Coefficient of Performance

1.4 kj/sec / 1.2 kj/sec = 1.17 = COP