2. Why are numbers better than words in a science experiment?

The distance (in meters) that Savanna run during this time will be 13.56 meters.

From the information, we are told that during a run near the end of Cross-Country practice, Savanna maintained an average speed of 6.78 m/s for 2.00 minutes.

Average speed is calculated by dividing total distance that something has traveled by the total amount of time that it took it to travel that distance. The average speed is how fast something is going at a particular moment. Average speed simply measures the average rate of speed over the extent of a trip.

It should be noted that the distance will be calculated as:

Distance = Speed × Time

Distance = 6.78 × 2

Distance = 13.56

Therefore, based on the information given it can be seen that the distance (in meters) that Savanna run during this time will be 13.56 meters.

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The most likely situation to occur if the climate changed and caused glaciers and ice caps to melt is:
D. Land masses would become smaller.

When glaciers and ice caps melt due to climate change, the water released from the melting ice flows into rivers, lakes, and eventually the oceans. This increase in water volume contributes to a rise in sea levels. As sea levels rise, low-lying coastal areas and islands may become submerged, leading to a reduction in the size of land masses.
In addition, the melting of glaciers and ice caps can cause other changes in the environment. While it might seem like the added freshwater could make the ocean water less salty, the influx of cold freshwater can actually disrupt ocean currents, which are crucial for regulating Earth's climate. As a result, certain regions may experience altered weather patterns and temperatures. However, these changes are complex and interconnected, making it difficult to predict specific outcomes, such as air temperature decrease or increased land fertility, solely based on melting ice caps and glaciers.
Overall, the most direct and likely impact of melting glaciers and ice caps on a global scale would be the reduction in land mass size due to rising sea levels.

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Answer:

Option #3 is your answer.

Explanation:

Sure, that sounds great! What kind of math are we studying? Do you have any specific topics you want to focus on?

A topic is a subject or issue that forms the basis of a discussion, paper, speech, or other form of communication. It is typically used to focus the ideas and facts presented in the communication, making it easier for the audience to understand and remember. It can be an essay, a research paper, a presentation, or any other type of communication that is intended to present and discuss a particular idea. By choosing a specific topic, the author is able to narrow down the scope of the discussion and focus on the main ideas more efficiently.

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An Independent Set S of graph G = (V, E) is a set of vertices such that no two vertices in S are adjacent to each other. It consists of non-adjacent vertices.

A vertex is a location in geometry where two or more curves, lines, or edges converge.

As a result of this definition, vertices are the intersection of two lines that create an angle as well as the corners of polygons and polyhedra.

Hence, in order to find when a set of vertices in a graph is independent, this means that no two vertices in S are adjacent to each other. It consists of non-adjacent vertices.

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Answer: Mohs Scale

Explanation: Mohs Scale of Hardness

hope this helped!!!!!!!!!!!

The value of  force b if the magnitude the force is 26N is determined as 24 N.

The value of force is calculated by applying the formula for determining the magnitude of a force as shown below;

The magnitude of a force is calculated as;

F = √ x² + y²

where;

The given magnitude of the force = 26 N

The x component of the force = 10

The y component of the force = b

26 = √ ( 10²  + b² )

26² = 10² + b²

676 = 100 + b²

b² = 676 - 100

b² = 576

b = √ 576

b = 24 N

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Answer:

Speed = (2πr)/t = (2π x 12 m)/2.1 s = 28.6 m/s

Acceleration = (vf-vi)/t = (28.6 m/s - 0 m/s)/2.1 s = 13.6 m/s^2

Answer:

The horse father from the center has a greater tangential speed. Although both horses complete one circle in the same time period, the one farther from the center covers a greater distance during that same period.

Explanation:

Option (C), in which the resistor and battery are linked in parallel, is the standard circuit design that best illustrates the circuit shown in an unusual fashion. The circuit diagram looks like this.

Copy the following code: _______ | | —-| R |—- | | —-|

|—- | | Battery

To properly connect the voltmeter to measure the potential difference across the resistor, connect it in parallel with the resistor. This may be accomplished by connecting the voltmeter leads as indicated in the diagram below:

yaml

| | | R | | | ————-| |————-\s | |\s | |\s | |

The current through the 5Ohm resistor cannot be calculated in this setup because the ammeter is not connected in series with the resistor. The current flowing through the circuit will be the same as the current flowing through the circuit.

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Mass over density is a mathematical expression that represents the ratio of mass to density. It is calculated by dividing the mass of an object or substance by its density. Mathematically, it can be represented as:

The equation relating mass (m) and density (ρ) is given by:

m = ρ * V

where:

m is the mass of the object or substance,

ρ is the density of the object or substance, and

V is the volume of the object or substance.

This equation states that the mass of an object is equal to the product of its density and volume. It shows that mass is directly proportional to density and volume.

The scenario described violates option 2. the second law of thermodynamics.

The second law of thermodynamics states that in any energy transfer or transformation, the total entropy of an isolated system always increases or remains constant, but it never decreases. Entropy can be thought of as a measure of the disorder or randomness in a system.

In the given scenario, the machine is claimed to create 1000J of heat energy from only 100J of electrical energy. Heat energy is a form of random molecular motion, and the conversion of electrical energy to heat involves an increase in entropy. According to the second law, energy transfers or transformations must always lead to an overall increase in entropy.

However, in this scenario, the machine appears to violate the second law by creating a significant amount of heat energy from a relatively small amount of electrical energy. This would imply a decrease in entropy, which contradicts the fundamental principle of the second law.

In reality, no machine can achieve 100% efficiency, meaning it cannot convert all the input energy into the desired output energy without any energy losses. Some energy will always be lost as waste heat due to inefficiencies in the conversion process. This waste heat contributes to the increase in entropy.

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Answer:

F=w=ma                                                                                                                                                       OR by using equations of motions                                                                               vf=vi-at                    : a=vf-vi/t                                                              eq 1                         s=vit+1/2at squre                                                                                 eq 2                     2as=vf squre - vi squre                                                                        eq 3                                                                                                                                                                                  

Explanation:

where m is the mass of falling body , f is the weight is the force acting down ward , vf is the final velocity, vi is the inetial velocity , t is the time and s is the distance covered by a body.

To determine the acceleration of each block, we need to apply the laws of motion and analyze the forces acting on each block.

the only force acting on it is the applied force P. The force of friction acting on Block A is equal to µN, where N is the normal force. Since Block B is resting on top of Block A, the normal force acting on Block A is equal to the weight of Block B plus the weight of Block A, which is (2m)g. Therefore, the force of friction acting on Block A is 0.25(2m)g.

F = ma, we can write the equation of motion for Block A as P - 0.25(2m)g = (2m + m)a. Solving for a, we get a = (P - 0.25(2m)g)/(3m).

the force acting on it is the tension in the cable CD, which is equal to the weight of Block B plus the weight of Block A, plus the force of friction acting between Block A and Block B. Using the same method as above, we can calculate the force of friction as 0.25mg. Therefore, the equation of motion for Block B can be written as T - 0.25mg = ma, where T is the tension in the cable.

their accelerations must be the same. Therefore, we can set the two equations equal to each other and solve for the tension T, which is equal to 0.75mg + P.

we can use the tension T to determine the acceleration of Blocks C and D, which are attached to Block B by the cables. Since the tension in the cables is the same throughout, the acceleration of Blocks C and D is also equal to a.

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The acceleration of block A is 17.55 m/s^2

Calculation for the given question is as following :-

Since block B is being held in place by cable CD, it is not moving and therefore has no acceleration. Thus, we only need to consider the motion of block A.

To solve the problem, we can use Newton's second law, which states that the net force on an object is equal to its mass times its acceleration:

F_net = ma

where F_net is the net force acting on the object, m is the mass of the object, and a is its acceleration.

First, we need to calculate the net force acting on block A. There are two forces acting on block A: the applied force P and the force of friction f. The force of friction is given by:

f = mu*N

where mu is the coefficient of kinetic friction and N is the normal force acting on the block. The normal force is equal in magnitude to the weight of the block, which is:

N = mg

where g is the acceleration due to gravity. Thus, the force of friction is:

f = mu*mg

Substituting the given values, we get:

f = 0.2559.81 = 12.27 N

The net force acting on block A is therefore:

F_net = P - f

Substituting the given value of P and the calculated value of f, we get:

F_net = 100 - 12.27 = 87.73 N

Finally, we can calculate the acceleration of block A using Newton's second law:

a = F_net/m

Substituting the given value of m and the calculated value of F_net, we get:

a = 87.73/5 = 17.55 m/s^2

Therefore, the acceleration of block A is 17.55 m/s^2.

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Answer: The answer is false.

Jared will go up the ramp 2.5 meters.

Velocity is defined as the displacement of the object in a given amount of time and is referred to as velocity.

The work done by Jared on the ramp can be calculated as follows:

W = mgh

where m is the mass of Jared and his skateboard, g is the acceleration due to gravity (9.8 m/s²), and h is the change in height.

The work done by Jared on the ramp is equal to the initial increase in kinetic energy:

W = (1/2)mv²

Setting these two equations equal to each other, we get:

mgh = (1/2)mv²

Solving for h, we get:

h = (1/2)v²/g

Plugging in the known values, we get:

h = (1/2)(7 m/s)²/9.8 m/s² = 2.5 m

Thus, he will go up the ramp 2.5 m.

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The object distance of the lens is 10 cm and the image distance of the lens is 30 cm.

The object and image distance formed by the lens is calculated by applying the following lens formula.

v + u = 40 ------- (1)

v/u = 3 ------------ (2)

v = 3u

Substitute v into equation (1);

3u + u = 40

4u = 40

u = 40/4

u = 10 cm

The image distance = 3u

= 3 x 10 cm

= 30 cm

Thus, the object distance is 10 cm and the image distance is 30 cm.

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The graph below shows the motion of a person leaving theater, line segment C represent : The person is moving away from the theater.

In physics, motion is a change with time of the position or orientation of a body. Motion along a line or a curve is called as translation whereas motion that changes orientation of a body is called rotation.

Motion is a change in position of an object over the  time and is described in terms of displacement, distance, velocity, acceleration, time and speed.

Change in position of a body with time when compared with another body is known as  motion.

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Answer:

80 n

Explanation:

The arcsine of 1 is 90 degrees, the critical angle is 90 degrees.the minimum depth (measured to the top of the Batbox) is equal to the height of the Batbox.

To determine the minimum depth of the Batbox below the surface of the water for Batman to remain hidden from the Joker, we need to consider the principle of total internal reflection. When light travels from a medium with a higher refractive index to a medium with a lower refractive index, it can undergo total internal reflection if the angle of incidence exceeds the critical angle. In this case, the light traveling from water (refractive index nw = 1.333) to the Batplastic (refractive index np = 1.333) can undergo total internal reflection at the interface between the two.

To calculate the minimum depth, we need to find the critical angle. The critical angle can be determined using the formula:

Critical angle = arcsin(np/nw)

Given:

Refractive index of water, nw = 1.333

Refractive index of Batplastic, np = 1.333

Calculating the critical angle:

Critical angle = arcsin(1.333/1.333)

Critical angle = arcsin(1)

Since the arcsine of 1 is 90 degrees, the critical angle is 90 degrees.

To ensure that Batman remains hidden, the Batbox should be placed at a depth below the surface of the water such that the light undergoes total internal reflection. In this case, the minimum depth is determined by the height of the Batbox. Therefore, the minimum depth (measured to the top of the Batbox) is equal to the height of the Batbox. However, the specific height of the Batbox is not provided in the question, so it cannot be determined without additional information.

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Answer:

Resistance is 1.75 ohms

Explanation:

Magnetic flux:

\({ \phi{ = NBA}}\)

N is number of turns, N = 8

B is magnetic flux

A is area of projection.

From faradays law:

\(E = - \frac{ \triangle \phi}{t} \)

where E is the Electro motive force.

But E = IR

where I is current and R is resistance:

\(IR = \frac{( \phi_{1} - \phi _{2}) }{t} \\ \\ 140 \times R = \frac{8 \times (8 - 5)}{0.098} \\ \\ R = \frac{24}{0.098 \times 140} \\ \\ resistance = 1.75 \: ohms\)

The magnetic field vectors at points 2 through 5 due to the moving charge are B₂ = -1.3 x 10⁻⁹ T into the paper, B₃ = 0, B₄ = 0, and B₅ = 1.3 x 10⁻⁹ T out of the paper.

To determine the magnetic field vectors B₂ through B₅ at points 2 through 5 due to the moving charge, we need to use the Biot-Savart Law. The Biot-Savart Law gives the magnetic field at a point due to a current-carrying wire or a moving charge.

The Biot-Savart Law is given by:

dB = μ₀/4π (I x dℓ x ẑ) / r²

where;

Considering the velocity of the charge, the magnetic field at each point:

B₂ = μ₀/4π (q vᵧ / r²)sin(90°) = μ₀/4π(q vᵧ / r²)

B₃ = μ₀/4π (q vᵧ / r²)sin(180°) = 0

B₄ = μ₀/4π(q vᵧ / r²)sin(180°) = 0

B₅ = μ₀/4π(q vᵧ / r²)sin(90°) = μ₀/4π(q vᵧ / r²)

where;

Using the given distance of 1.0 mm, we can calculate the magnetic field magnitudes at each point:

B₂ = μ₀/4π(q vᵧ / r²)

The velocity of the charge is calculated as;

B₁ =  μ₀/4π(q vᵧ / r²)

1.3 x 10⁻⁹ = (1.26 x 10⁻⁶ Tm/A)/4π)(1.6 x 10⁻¹⁹ C)(v)/(0.001)²

v = 1.02 x 10⁵ m/s

B₂ = (1.26 x 10⁻⁶ Tm/A)/4π)(1.6 x 10⁻¹⁹ C)(1.02 x 10⁵ m/s) / (0.001 m)²

B₂  = 1.3 x 10⁻⁹ T

B₃ = 0 (since sin(180°) = 0)

B₄ = 0 (since sin(180°) = 0)

B₅ = μ₀/4π(q vᵧ / r²)

B₅ = (1.26 x 10⁻⁶ Tm/A)/4π)(1.6 x 10⁻¹⁹ C)(1.02 x 10⁵ m/s) / (0.001 m)²

B₅ = 1.3 x 10⁻⁹ T

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Answer:

Calcium is an essential mineral that is important in the diet of many living things as it plays several important roles in the body:

1. Bone and teeth formation: Calcium is a key component of bones and teeth, making them strong and healthy.

2. Muscle function: Calcium plays a critical role in muscle contraction and relaxation, helping muscles function properly.

3. Nerve function: Calcium is involved in the transmission of nerve impulses, which allows for proper communication between nerve cells.

4. Blood clotting: Calcium is required for blood clotting, which is important for preventing excessive bleeding after an injury.

5. Cellular signaling: Calcium is involved in many cellular signaling pathways, helping to regulate various physiological processes in the body.

Therefore, having an adequate amount of calcium in the diet is crucial for the overall health and well-being of many living organisms.

Answer:

The distance traveled by train in 12 seconds is 66.72 meters.

Explanation:

The acceleration rate given is in meters per second squared, so we need to convert the velocity of the train to meters per second.

20 km/hr = (20 x 1000)/(60 x 60) = 5.56 m/s

Now we can use the formula for displacement with constant acceleration:

d = v₀t + 0.5at²

where

v₀ = initial velocity = 5.56 m/s

t = time = 12 s

a = acceleration = 0.5 m/s²

Substituting the values, we get:

d = 5.56 x 12 + 0.5 x 0.5 x 12²

d = 66.72 m

Answer:

TWO

Explanation:

Resistance = (voltage) / (current)

Resistance = (100 V) / (20 A)

Resistance  =  5 Ω  (D)

Answer:

200' ohms

Explanation:

Answer:

Explanation:

F = k * q * lambda * R * π * (1 - √2/2)

Substituting the given values of q, lambda, R, and k, we get:

F = (9 x 10^9 N*m^2/C^2) * (20 x 10^-9 C) * (1 x 10^-6 C/m) * (0.1 m) * π * (1 - √2/2)

F ≈ 8.58 x 10^-4 N

Therefore, the force of interaction between the half ring and the point charge is approximately 8.58 x 10^-4 N.