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Degger [83]
2 years ago
12

What is cultural discontinuity?

Physics
2 answers:
Gre4nikov [31]2 years ago
8 0

Answer:

Disconnections and discrepancies 

between school-based norms and values and those of 

some pupils, especially those from 

nondominant cultures, are referred to 

as cultural discontinuity.

☆-----------------------------☆

☆Hope it helps...

☆Have a great day!!!

Margaret [11]2 years ago
6 0
When the culture is discontinued from the bla bla bla
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Can someone please help a struggling physics student?
zhenek [66]
<h3><u>Part A:</u></h3>

<u><em>What is the maximum height the ball will reach in the air?</em></u>

Kinematics equation used:

  • v_f^2=v_i^2+2ad, where v_f is final velocity, v_i is initial velocity, a is acceleration, and d is distance travelled. From SI units, velocity should be in m/s, acceleration should be in m/s^2, and distance should be in m

We're given that the initial velocity is 12.0 m/s in the y-direction. At the maximum height, the vertical velocity of the ball will be 0 m/s, otherwise it would not be at maximum height. This is our final velocity.

The only acceleration in the system is acceleration due to gravity, which is approximately 9.8\:\mathrm{ m/s^2}. However, the acceleration is acting down, whereas the ball is moving up. To express its direction, acceleration should be plugged in as -9.8\:\mathrm{m/s^2}. We have three variables, and we are solving for the fourth, which is distance travelled. This will be the maximum height of the ball.

Substitute v_i=12, v_f=0, a=-9.8 to solve for d:

0^2=12^2+2(-9.8)(d),\\0=144-19.6d,\\-19.6d=-144,\\d=\frac{-144}{-19.6}=7.34693877551\approx \boxed{7.35\text{ m}}

<u><em>What is the velocity of the ball when it hits the ground?</em></u>

This question tests a physics concept rather than a physics formula. The vertical velocity of the ball when it hits the ground is equal in magnitude but opposite in direction to the ball's initial vertical velocity. This is because the ball spends equal time travelling to its max height as it does travelling from max height to the ground (ball is accelerating from initial velocity to 0 and then from 0 to some velocity over the same distance and time). Since the ball has an initial vertical velocity of +12.0 m/s, its velocity when it hits the ground will be \boxed{-12.0\text{ m/s}}. (The negative sign represents the direction. Because velocity is a vector, it is required.)

<h3><u>Part B:</u></h3>

<u>**Since my initial answer exceeds the character limit, I've attached the first question to Part B as an image. Please refer to the attached image for the answer and explanation to the first question of Part B. Apologies for the inconvenience.**</u>

<u><em>What is the direction of the velocity of the ball when it hits the ground? Express your answer in terms of the angle (in degrees ) of the ball's velocity with respect to the horizontal direction (see figure).</em></u>

This question uses a similar concept as the second question of Part A. The vertical velocity of the ball at launch is equal in magnitude but opposite in direction to the ball's final velocity. The horizontal component is equal in both magnitude and direction throughout the entire launch, since there are no horizontal forces acting on the system. Therefore, the angle below the horizontal of the ball's velocity when it hits the ground is equal to the angle of the ball to the horizontal at launch.

To find this, we need to use basic trigonometry for a right triangle. In any right triangle, the tangent/tan of an angle is equal to its opposite side divided by its adjacent side.

Let the angle to the horizontal at launch be \theta. The angle's opposite side is represented by the vertical velocity at launch (12.0 m/s) and the angle's adjacent side is represented by the horizontal velocity at launch (2.3 m/s). Therefore, we have the following equation:

\tan \theta=\frac{12.0\text{m/s}}{2.3\text{ m/s}}

Take the inverse tangent of both sides:

\arctan (\tan \theta)=\arctan (\frac{12.0}{2.3})

Simplify using \arctan(\tan \theta)=\theta \text{ for }\theta \in (-90^{\circ}, 90^{\circ}):

\theta=\arctan(\frac{12.3}{2.3}),\\\theta =79.14989537\approx \boxed{79.15^{\circ}}

We can express our answer by saying that the direction of the velocity of the ball when it hits the ground is \boxed{\text{approximately }79.15^{\circ} \text{ below the horizontal}} or \boxed{\text{approximately }-79.15^{\circ} \text{ to the horizontal}}.

5 0
3 years ago
A box, initially at rest, has 36.7 N of force exerted on it for 2.81 s. If the box has a mass of 7.41 kg, what was its velocity
ElenaW [278]

Answer:

13.91 m/s

Explanation:

First we need to find the acceleration:

Acceleration = Force/mass

Acceleration = 36.7N/7.41 kg

Acceleration = 4.95 m/s² (rounded to two decimal places)

Then we find the velocity:

Velocity = Acceleration * Time

Velocity = 4.95 m/s² * 2.81 s

Velocity = 13.91 m/s (rounded to two decimal places)

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The answer is having fewer neutrons than protons or electrons.
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3 years ago
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The overhang beam is subjected to the uniform distributed load having an intensity of w = 50 kn/m. determine the maximum shear s
alex41 [277]
Given:

Uniform distributed load with an intensity of W = 50 kN / m on an overhang beam.

We need to determine the maximum shear stress developed in the beam:

τ = F/A

Assuming the area of the beam is 100 m^2 with a length of 10 m.

τ = F/A
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τ = 5kN/m^2
τ = 5000 N/ m^2<span />
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3 years ago
An object is dropped and is in free fall. Each second, the position of the object is marked. The distance between each mark is m
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