Your friend won the race that you were both running. Instead of being gracious, your friend made fun of you for losing, and now you don't want to run anymore. What is this an example of?Positive peer pressure
Negative peer pressure
Positive peer influence
Negative peer influence

Answers

Answer 1
Answer: negative peer influence
Answer 2
Answer:

negative peer influence


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3 The components of a 15-meters-per-secondvelocity at an angle of 60.° above the horizontal
are
(1) 7.5 m/s vertical and 13 m/s horizontal
(2) 13 m/s vertical and 7.5 m/s horizontal
(3) 6.0 m/s vertical and 9.0 m/s horizontal
(4) 9.0 m/s vertical and 6.0 m/s horizontal

Answers

First draw a picture to help make the problem easier. (see attached)

Next you can use sin and cos to find the x and y components of the velocity.

First lets find the vertical component:
sin =  (opp)/(hyp)
sin(60) =  (y)/(15m/s)
Multiply both sides by 15m/s
15m/s * sin(60) = y
y ≈ 13 m/s

Now you can find the horizontal component:
cos =  (adj)/(hyp)
cos(60) =  (x)/(15m/s)
Multiply both sides by 15m/s
15m/s * cos(60) - x
x = 7.5

Therefore the answer is 2, the vertical (y) component is 13m/s and the horizontal (x) component is 7.5m/s.

The components of the velocity are :

(2) 13 m/s vertical and 7.5 m/s horizontal

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Further explanation

Vector is a quantity that has a magnitude and direction.

A vector in a cartesian coordinate is represented by an arrow in which the slope of the arrow shows the direction of the vector and the length of the arrow shows the magnitude of the vector.

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A position vector of a point is a vector drawn from the base point of the coordinates O (0,0) to that point.

The addition of two vectors can be done in the following ways:

\overrightarrow {AB} + \overrightarrow {BC} = \overrightarrow {AC}

A negative vector is a vector with the same magnitude but in opposite direction.

\overrightarrow {AB} = -\overrightarrow {BA}

Let's tackle the problem!

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Given:

magnitude of the velocity = v = 15 m/s

direction of the velocity = θ = 60°

Asked:

horizontal component of the velocity = v_x = ?

vertical component of the velocity = v_y = ?

Solution:

Firstly , we will calculate the horizontal component of the velocity as follows:

v_x = v \cos \theta

v_x = 15 * \cos 60^o

v_x = 15 * (1)/(2)

\boxed {v_x = 7.5 \texttt{ m/s}}

\texttt{ }

Next , we will calculate the vertical component of the velocity as follows:

v_y = v \sin \theta

v_y = 15 * \sin 60^o

v_y = 15 * (1)/(2) √(3)

v_y = 7.5 √(3) \texttt{ m/s}

\boxed {v_y \approx 13 \texttt{ m/s}}

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Learn more

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Answer details

Grade: High School

Subject: Physics

Chapter: Vectors

Tierra is playing in her backyard when she hears her friend calling out to her. She can't see her friend but can hear her friend's voice. Which wave phenomenon helps explain why Tierra can hear her friend even when she can't see her?interference


refraction


superposition


diffraction

Answers

Answer : diffraction

Explanation : Diffraction is the phenomenon of bending of sound waves around the small openings or obstacles.

Tierra is playing in her backyard when she hears her friend calling out to her. Tierra can hear her friend even when she can't see her. This is because the sound is spreading out from the small openings and hence diffraction of sound wave occurs.

What temperature is required to transfer waste heat to the environment for a heat engine to be 100 percent efficient?

Answers

212*f....... as that kid tried to explain the combustion process, and failed... the process isn't exactly the same for all heat engines... therefore, there has to be a universal heat that of in which has a standard heat of 212 degrees fahrenheit

HeatEngines!Agasolineengineisaformofaheatengine."Gasoline is mixed with air."A spark ignites the mixture, whichburns rapidly."Heat is released from the

If all of the forces acting on an object balance so that the net force is zero, then(A) the object must be at rest
(B) the object’s speed will decrease
(C) the object will follow a parabolic trajectory
(D) the object’s direction of motion can change, but its speed cannot
(E) None of the above

Answers

What is the acceleration of a ball traveling horizontally with an initial velocity of 20 meters/second and, 2.0 seconds later, a velocity of 30 meters/second?

Answers

The acceleration of the ball is 5 m/s^2. This can be calculated using a formula that relates the change in velocity, acceleration, and time. This formula is:

Vf = Vi + at

where:
Vf = final velocity
Vi = initial velocity
a = acceleration
t = time

Substituting the values gives:

30 = 20 + a(2)
a = 5 m/s^2 --> Final Answer

Answer:

5.0 meters/second^2

I hope this helps!!

Explanation:

A wave creates a strong undertow

Answers

Hey there! 

Answer: A swell

A wave which creates a strong undertow is called a swell. These types of waves are also known as surface gravity waves. 

Thank you!