velocity changes from 2m/s to 12m/s time taken is 5 seconds (with the guess method pleasee)

In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

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The answer would radio waves have the longest waves and have the least amount of energy.

Hope that helps!

The way how charged particles interact is demonstrated with the Charge Launcher Gizmo. Tiny charged particles have the ability to attract (pull together) or repel (push apart) one another, just like magnets.

The positive charge is present in the red particles.

The red particle took a slightly bent downhill route when it was launched from the upper left corner of the grid.

The blue particles are negatively charged. This particle is fixed, which means it is affixed to the grid. The blue particle took the same course downhill when it was released from the upper right corner of the grid and at the very end it curled upward.

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To calculate the height of the cliff and the time it takes for the rock to reach the ground when thrown straight down, we can use the equations of motion.

(a) Height of the cliff:

When the rock is thrown straight up, it reaches its highest point before falling back down. The time it takes for the rock to reach its highest point is equal to the time it takes for the rock to fall back down to the ground.

Using the equation:

s = ut + (1/2)at^2

Where:

s is the distance traveled (height of the cliff),

u is the initial velocity (8.19 m/s),

t is the time (2.32 s),

a is the acceleration due to gravity (-9.8 m/s^2, taking downward direction as negative).

Rearranging the equation:

s = ut + (1/2)at^2

s = (8.19)(2.32) + (1/2)(-9.8)(2.32)^2

s = 19.004 - 25.798

s = -6.794 m

Since the height of a cliff cannot be negative, we take the absolute value of the result:

Height of the cliff = |s| = 6.794 m

So, the height of the cliff is approximately 6.794 meters.

(b) Time to reach the ground when thrown straight down:

When the rock is thrown straight down with the same speed, the initial velocity (u) is still 8.19 m/s, but the acceleration due to gravity (a) remains -9.8 m/s^2.

Using the equation:

s = ut + (1/2)at^2

Where:

s is the distance traveled (height of the cliff, which is now negative),

u is the initial velocity (8.19 m/s),

t is the time we want to find,

a is the acceleration due to gravity (-9.8 m/s^2, taking downward direction as negative).

Substituting the known values:

-6.794 = (8.19)t + (1/2)(-9.8)t^2

Rearranging the equation:

-6.794 = 8.19t - 4.9t^2

Rearranging further:

4.9t^2 - 8.19t - 6.794 = 0

Solving this quadratic equation, we find two possible values for t: 0.828 seconds and 1.303 seconds. Since we are considering the time it takes to reach the ground, the valid solution is t = 0.828 seconds.

Therefore, when the rock is thrown straight down, it takes approximately 0.828 seconds to reach the ground.

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Answer:

It would be 2.2 if you have to round the five to the one but if your not rounding the number, it'd be 2.1.

Explanation:

By analyzing the velocity-time graph, we can determine the maximum speed at the end of the constant speed phase and the disability during the deceleration phase.

To sketch the velocity-time graph and determine the maximum speed and disability, let's break down the motion into three phases:

Phase 1: Acceleration

The object starts from rest and undergoes acceleration for 40 seconds at a constant speed. During this phase, the velocity increases linearly with time. The slope of the velocity-time graph will be a straight line with a positive gradient.

Phase 2: Constant Speed

After 40 seconds, the object continues to move at a constant speed for the next 100 seconds. During this phase, the velocity remains constant, resulting in a horizontal line on the velocity-time graph.

Phase 3: disability

After 140 seconds, the object is brought to rest with uniform disability over a duration of 20 seconds. The velocity decreases linearly with time during this phase. The slope of the velocity-time graph will be a straight line with a negative gradient.

To determine the maximum speed, we need to find the highest point on the velocity-time graph. In this case, it occurs at the end of phase 2 when the object is moving at a constant speed. The maximum speed is reached at this point.

To determine the disability, we need to find the slope of the line during phase 3. The negative gradient of the velocity-time graph during the deceleration phase represents the magnitude of the uniform disability.

Therefore, by analyzing the velocity-time graph, we can determine the maximum speed at the end of phase 2 and the disability during phase 3.

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The time period and frequency associated with this motion can be calculated using the formula T=2π/ω and f=1/T, where T is the time period, ω is the angular velocity, and f is the frequency.

In this case, the angular velocity is given as w = */2 rad/s.

Therefore, substituting the value of ω in the formula for T and f, we get T = 4π/* seconds and f = */4 Hz.
The time period represents the time taken by the object to complete one full rotation around its axis, whereas the frequency represents the number of rotations per unit time.

In this case, the time period is inversely proportional to the angular velocity, which means that if the angular velocity increases, the time period decreases, and vice versa. The frequency is directly proportional to the angular velocity, which means that if the angular velocity increases, the frequency also increases, and vice versa.
The time period and frequency associated with the given motion can be calculated using the formula T=2π/ω and f=1/T, where T is the time period, ω is the angular velocity, and f is the frequency. For the given angular velocity of w = */2 rad/s, the time period is T = 4π/* seconds and the frequency is f = */4 Hz.

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Answer:

a5, b3, c1, d6, e2, f4

Explanation:

Answer:

The velocity of the motorboat after 6s is 24 m/s.

Explanation:

Given;

acceleration of the motorboat, a = 4.0 m/s²

initial velocity of the motorboat, u = 0

time of motion of the motorboat = 6s

Apply the following kinematic equation to determine the velocity of the motorboat after 6 ;

v = u + at

v = 0 + (4 x 6)

v = 24 m/s

Therefore, the velocity of the motorboat after 6s is 24 m/s.

For Galileo, a uniformly accelerated motion is one for which each time the same time passes, the same change in velocity occurs.

So, the correct answer is D.

This statement is represented in Galileo's law of acceleration, also known as Newton's Law of Inertia. This law states that an object will remain at rest or in uniform rectilinear motion (MRU) unless a net force acts on it. The law also states that the net force applied to an object is equal to the object's mass times its acceleration.

Constant acceleration occurs in uniformly accelerated motion, which means that an object's velocity changes uniformly over time. In other words, the magnitude of the acceleration is constant.

For example, the free fall of an object near the Earth's surface is an example of uniformly accelerated motion, since the acceleration due to gravity is constant.

Hence, the answer of the question is D.

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One significant method for assessing body fat distribution is measurement of waist circumference.

Waist circumference is a widely used method for assessing body fat distribution and is an important indicator of central obesity. It involves measuring the circumference of the waist at a specific anatomical landmark, typically at the level of the narrowest point between the ribs and the iliac crest.

The measurement of waist circumference provides valuable information about the distribution of body fat. Excess fat accumulation in the abdominal region, also known as central obesity or android obesity, is associated with a higher risk of various health conditions, including cardiovascular diseases, type 2 diabetes, and metabolic syndrome.

By measuring waist circumference, healthcare professionals can evaluate an individual's body fat distribution and assess their risk for developing obesity-related health problems.

The measurement of waist circumference is relatively simple and non-invasive, making it a practical method for assessing body fat distribution in clinical and research settings. It is often used in conjunction with other anthropometric measurements, such as body mass index (BMI), to provide a comprehensive evaluation of an individual's body composition and health status.

Regular monitoring of waist circumference can help track changes in body fat distribution over time and guide interventions aimed at reducing central obesity and improving overall health.

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The security guard make the trip of 120 m of distance in a time of 250 s with a speed of: 0.48 m/s

The formula and procedure we will use to solve this exercise is:

v = x /t

Where:

Information about the problem:

Applying the velocity formula we have that:

v = x /t

v = 120 m /250 s

v = 0.48 m/s

It is a physical quantity that indicates the displacement of a mobile per unit of time, it is expressed in units of distance per time, for example (miles/h, km/h).

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When a neuron is at resting potential, the state of the electrical charge is negative inside the neuron compared to the outside

Because of an unequal distribution of ions like potassium (K+) and chloride (Cl-) inside and outside the neuron, the interior of the neuron is negatively charged at resting potential. The membrane of the neuron is selectively permeable, permitting certain ions to pass while preventing others from doing so. A gradient in electrochemistry results from this.

Ion channels, notably the sodium-potassium pump, which actively transfers sodium ions (Na+) out of the neuron and potassium ions (K+) into the neuron, are responsible for maintaining the resting potential. As a result, the neuron produces an excess of negative charge within and an excess of positive charge outside.

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60 percent

Explanation:

because 20 do exercise but more that 60 don't so your answer would be 60 percent

The special theory of relativity predicts that fast-moving objects will appear to be shorter along the direction of motion than when they are seen at rest. Option B is the correct answer.

According to Einstein's theory, an item contracts more in the direction of motion the quicker it moves. This effect is not perceptible in our ordinary experiences since it is only perceptible at speeds that are a considerable fraction of the speed of light. Option B is the correct answer.

A fundamental theory of physics known as the special theory of relativity describes how the rules of physics apply to things moving quickly. The most well-known prediction of the theory is that no matter how quickly the observer is travelling in relation to the light source, the speed of light stays constant in all reference frames. Numerous tests have verified this prediction, which is now regarded as one of the foundations of contemporary science.

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The complete question is, "The special theory of relativity predicts that fast-moving objects will appear to be ______than when they are seen at rest:

a. fatter

b. shorter along the direction of motion

c. stretched out along the direction of motion

d. older

e. less massive"

Answer:

.

Explanation:

The velocity of ball with respect to ground is 55km/h whereas with respect to car is 35km/h travelling opposite to its motion.

speed of ball relative to the truck = 15km/h

speed of truck relative to ground = 70km/h

(a) velocity of the ball relative to ground = speed of ball + speed of truck

Vb = (-15 )+75 [here - indicates that speed of ball is relative to the truck in the direction opposite its motion]

Vbg = 55km/h

(b) speed of car = 90km/h

velocity of the ball relative to car = 55 + (-90) as car is travelling opposite to ball.

Vbc = 35km/h

A person riding in the back of a pickup truck traveling at 70 km/h on a straight, level road throws a ball with a speed of 15 km/h relative to the truck in the direction opposite to the truck's motion. What is the velocity of the ball (a) relative to a stationary observer by the side of the road, and (b) relative to the driver of a car moving in the same direction as the truck at a speed of 90 km/h?

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Answer: The ball travels at a velocity of 55 km/h relative to the ground and 35 km/h relative to the moving car.

Explanation: The ball travels at a speed of 55 km/h relative to the ground and 35 km/h relative to the moving car.

Truck speed in relation to ball speed is 15 km/h

truck's speed with relation to the ground is 70 km/h

(A) The ball's velocity in relation to the ground equals its combined ball and truck speeds

Vb = (-15)+75 [here - denotes that the ball's speed is related to the truck's velocity in the opposite direction]

55 km/h, Vbg

(b) automobile speed equals 90 km/h

Car is moving in the opposite direction as the ball, hence the ball's velocity in relation to it is 55 + (-90).

Vbc = 35 kph.

When a person riding in the back of a pickup truck traveling at 70 km/h on a straight, level road throws a ball with a speed of 15 km/h relative to the truck in the direction opposite its motion. The ball travels at a velocity of 55 km/h relative to the ground and 35 km/h relative to the moving car.

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Answer:

Explanation:

Fill the graduated cylinder partially with water to a level where you can submerge the object and drop the sinker weight into the water. If you don't have a graduated cylinder to fit your object, put a cylinder in a basin, fill it to the top with water and measure the overflow into the basin. Your answer will be less accurate because of the number of times the water has been moved. Note the amount of displacement in milliliters (ml) caused by the sinker and string.

Measure the mass of your object (say a cork) on a balance scale in grams (g). Be sure the object is dry when it is measured. Record its weight. Attach the sinker with the string to the object. If you use a staple or pin, be sure to include that when you measure the displacement of the sinker in step one.

Answer:

2970dB

Explanation:

30 x99=2970

Magma is molten rock that is below the earth's surface and retains most of its volcanic gases.

Magma is a mixture of molten rock, minerals, and gases that is located below the earth's surface. It is typically generated in the Earth's mantle, and it can move up into the crust due to geological processes like plate tectonics and volcanic activity. Magma is a high-temperature, high-pressure fluid that can be highly viscous, which means it can resist flow.

Magma is often associated with volcanic activity and can lead to the formation of volcanoes. When magma rises to the surface and is released, it is called lava. Magma can also crystallize underground, forming igneous rocks, such as granite and basalt.

Magma can contain a variety of gases, including water vapor, carbon dioxide, and sulfur dioxide. These gases can be released during volcanic eruptions and can have significant impacts on the environment and human health. For example, sulfur dioxide emissions from volcanoes can lead to acid rain and respiratory problems.

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The total magnetic flux through the cylinder is zero.

To determine the magnetic flux through the cylinder, we can use the formula:

Φ = ∫ B · dA

where Φ is the magnetic flux, B is the magnetic field, and dA is an

infinitesimal area element.

Since the wire is placed along the axis of the cylinder, the magnetic field

will have a constant magnitude along any circle with the same radius as

the wire. The magnitude of the magnetic field at a distance r from the

wire is given by:

B = μ₀I/(2πr)

where μ₀ is the permeability of free space, I is the current in the wire, and r is the distance from the wire.

To determine the total magnetic flux through the cylinder, we need to

integrate the magnetic field over the surface of the cylinder. We can use

cylindrical coordinates for this integration, with the z-axis along the axis of the cylinder.

The infinitesimal area element in cylindrical coordinates is given by:

dA = r · dz · dθ

where r is the radius of the circle, dz is the infinitesimal height element,

and dθ is the infinitesimal angle element.

Since the wire is placed along the z-axis, the magnetic field will be

perpendicular to the area element dA, so we only need to consider the

component of the magnetic field that is perpendicular to the surface of

the cylinder. This component is given by:

B·cos(θ) = μ₀I/(2πr) · cos(θ)

where θ is the angle between the vector pointing from the wire to the

surface element and the z-axis.

Integrating over the surface of the cylinder, we have:

Φ = ∫∫ B·cos(θ) · r · dz · dθ

= ∫₀²π ∫₀⁰⁵ B·cos(θ) · r · dz · dθ

= ∫₀²π ∫₀⁰⁵ μ₀I/(2πr) · cos(θ) · r · dz · dθ

= μ₀I/2π ∫₀²π ∫₀⁰⁵ cos(θ) · dz · dθ

= μ₀I/2π ∫₀²π 0 · dθ

= 0

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Answer:Science is a method of learning things about the world and environment we live in today . It gives us a better understanding of the natural world and how it works

Explanation:

Answer: Fn = 450 N

Explanation:

Part of the tension acts in the upward y-direction, reducing the normal force.

ΣFy = Fn + Ftsin(30)-Fg

0 = Fn + (300 N)sin(30) - (60 kg)(10 m/s^2)

0 = Fn + 150 N - 600 N

0 = Fn - 450 N

Fn = 450 N

Answer:

The three life-support systems she talks about are, not just our own body, but civilization and the earth. All these things help us to survive. In forensics, this could be applied to finishing a case. Forensic’s life-support relies on, our knowledge, evidence, and technology.

Therefore, the minimum box size for this switch will be 2.5 cubic inches, while the recommended size is at least 18 cubic inches for a 14-gauge wire. However, the calculated box volume is 13 cubic inches. Hence, the box size required will be greater than 13 cubic inches.

In order to determine the box size for a 3-way switch in the bedroom hallway leading into the living room, the calculation needs to be done. Also, the box contains cable clamps.

So, here is how to determine the box size for this switch:

Calculation:

Firstly, we need to calculate the box volume. For that, we need the formula:

Box volume = Number of wires x 2 + Box fill volume Box fill volume is 2.0 cubic inches for each 14-gauge wire or 2.25 cubic inches for each 12-gauge wire or larger plus clamps for each box.

The box size of switch can be found out as follows:

The minimum box size for a three-way switch is 2.5 cubic inches.

However, the National Electrical Code recommends at least 18 cubic inches for a 14-gauge wire or 20 cubic inches for a 12-gauge wire.

The volume of the cable clamps is also to be included in the calculation. So, let's say the wire gauge used is 14-gauge.

Then,

the box volume = (2 x number of wires) + (2.0 cubic inches for each 14-gauge wire x number of wires) + volume of cable clamps.

Let the number of wires be 3 and the volume of each cable clamp be 0.5 cubic inches.

The calculation will be as follows:

Box volume = (2 x 3) + (2.0 x 3) + (0.5 x 2) = 6 + 6 + 1 = 13 cubic inches.

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Answer:

20m/s

Explanation:

Given parameters:

Distance of throw = 50m

Time  = 3s

Unknown:

Average speed  = ?

Solution:

Average speed is distance divided by time;

  Average speed  = \(\frac{distance }{time}\)

Insert the parameters and solve;

  Average speed  = \(\frac{50}{3}\)   = 16.66667m/s  = 20m/s

A magnetic field created by the electric current causes the compass needle to move. Option D is correct choice.

When a current flows through a wire, it creates a magnetic field around it. This magnetic field interacts with the magnetic field of the compass needle causing it to move. The direction of the needle's movement is perpendicular to the direction of the current flow, as determined by the right-hand rule. Therefore, placing a compass near a simple circuit will cause the needle to move, indicating the presence of a magnetic field created by the current in the circuit. Hence, option D is correct.

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Answer: It is potential energy associated with gravitational force. Or if you want to use another definition, it is the energy possessed or acquired by an object due to a change in its position when it is present in a gravitational field. Pick either definition.

Hope this helped!

Answer:

Attainable

Explanation:

Definition of Attainable: able to be attained; achievable.

If it is not within your limits, it is not attainable.