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elena55 [62]
3 years ago
8

What is the difference between speed and velocity?

Physics
1 answer:
olga55 [171]3 years ago
3 0

The answer is c.velocity is speed and direction

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PLEASE HELP<br><br> TOPIC - CONVECTION
Alex777 [14]

Answer:

  1. Dry air burns out and gets warm
  2. It's smoke and smoke always rises
  3. Not ours
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Why do sound waves move faster through the ground than through the air? a. Particles of matter are packed more loosely in the gr
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3 years ago
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What is the mechanical advantage of a 8 m ramp that rises 2 m to a stage?
Neko [114]

Answer:

Mechanical advantage = 4

Explanation:

Given the following data;

Distance of effort, de = 8m

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5 0
2 years ago
A 75 N box of oranges is being pushed across a horizontal floor. As it moves, it is slowing at a constant rate of 0.90 m/s each
shusha [124]

Answer:

μk = 0.26885

Explanation:

Conceptual analysis

We apply Newton's second law:

∑Fx = m*a (Formula 1)

∑F : algebraic sum of the forces in Newton (N)

m : mass in kilograms (kg)

a : acceleration in meters over second square (m/s²)

Data:

a= -0.9  m/s²,  

g = 9.81 m/s² : acceleration due to gravity

W= 75 N :  Block weight

W= m*g  

m =  W/g = 75/9.8= 7.65 kg :  Block mass

Friction force : Ff

Ff= μk*N

μk: coefficient of kinetic friction

N : Normal force (N)  

Problem development

We apply the formula (1)

∑Fy = m*ay    , ay=0

N-W-25 = 0

N = 75 +25

N= 100N

∑Fx = m*ax    

20-Ff= m*ax    

20-μk*100 = 7.65*(-0.90 )

20+7.65*(0.90) = μk*100

μk = ( 20+7.65*(0.90)) / (100)

μk = 0.26885

4 0
3 years ago
Is it possible for a distance versus-time graph to be a vertical line?
Feliz [49]
If time is the x axis and distance is the y axis then yes, in the case that time is going by but distance remains the same.
4 0
3 years ago
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