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2 years ago

Nancy and Hiyang are training for a race. They entered some of their training notes in a chart.

1 answer:

8 0

The data should be put on the graph to determine who covered a longer distance by running each day in the units that will be used to measure distance. Option C is correct.

<h3>What is the distance?</h3>

Distance is a numerical representation of the distance between two objects or locations.

The distance can refer to a physical length or an estimate based on other factors in physics or common use. |AB| is a symbol for the distance between two points A and B.

Distance is measured in the meter, centimeter, miles, nautical mile, feet, etc. The unit of the distance is most important in order to find it.

Hiyang and Nancy are preparing for a race. Some of their training-related notes were entered on a chart.

The data should be put on the graph to determine who covered a longer distance by running each day in the units that will be used to measure distance.

Hence, option C is correct.

To learn more about the distance refer to the link;

brainly.com/question/26711747

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Which of the following situations would violate the second law of

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8. An ant on a picnic table travels 30 cm eastward, then 25 cm northward, and finally 15 cm westward. What is the ant's displace

wel

Answer:

The displacement of the ant, R = 29.15 cm

The angle of the resultant displacement with its original position is, θ = 30° 57'

The direction of the displacement is towards the northeast.

Explanation:

Given data,

The displacement towards east, d₁ = 30 cm

The displacement towards north, d₂ = 25 cm

The displacement towards west, d₃ = 15 cm

The total displacement towards east,

d₄ = d₁ - d₃

= 30 - 15

= 15 cm

The total displacement of ant is given by the resultant displacement,

R = √(d₂² + d₄² + 2· d₂ d₄ CosФ)

Where Ф is the angle between the vectors, d₂ & d₄

Ф = 90°

Therefore,

R = √(d₂² + d₄²)

Substituting in the above equation,

R = √(25² + 15²)

= 29.15 cm

Hence, the displacement of the ant, R = 29.15 cm

The angle of the resultant displacement with its original position is,

θ = tan⁻¹ (d₄ / d₂)

= tan⁻¹ (15 / 25)

= tan⁻¹ 0.6

= 30° 57'

Hence, the angle of the resultant displacement the its original position is, θ = 30° 57'

The direction of the displacement is towards the northeast.

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3 years ago

Find α, the angular acceleration of the wheel, which results from F⃗ pulling the string to the left. Use the standard convention

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Answer:

α = F/(k×m×r)

Explanation:

When the wheel is pulled to turn in a counterclockwise direction, the wheel will have a moment of inertia given by Iw = k×m×r²

Where k = the radius of gyration of the wheel which is a dimensionless quantity less than one.

m = the mass of the wheel

r = the radius of the wheel

First and foremost, we relate the torque (τ) about the axle of the wheel to the force (F) applied on the wheel and we have that τ = r × F

We then relate the torque on the wheel to the angular acceleration (α), we have that τ = Iw × α, where Iw is the moment of inertia of the wheel as explained above

Substituting for torque τ and moment of inertia I into the above equation we have that

r × F = k×m×r² × α

solving for α we have that

α = r × F /(k×m×r²)

Therefore

α = F/(k×m×r)

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4 years ago

The design phase in which a building project's basic functional requirements are first laid out (square footage, utility and equ

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Answer:

e. design programming

Explanation:

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The programming therefore consists in setting, in an approximate way, the moments of beginning and termination of each activity. Some activities may have slack and others are critical activities (fixed over time).

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Build a time diagram (moments of beginning and slack of activities).

Establish the times of each activity.

Analyze project costs and adjust clearances (minimum cost project).

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