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fomenos
3 years ago
11

Oil can be used to reduce friction. true or fales take 100 mark for solving gg

Physics
2 answers:
GalinKa [24]3 years ago
8 0

Answer:

This is true.

Oil has a good consistency for reduction in tight areas of something. If you've ever played a recorder for band class or just for fun, you may have realized that every time you take it apart and put it together again it gets harder, and normally the recorder comes with a small container of oil that you rub between the two connecting pieces.

Naddika [18.5K]3 years ago
4 0

yes because it has to reduce frition by its own method called fellding

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An electron is released from rest in a weak electric field given by vector E = -1.30 10-10 N/C ĵ. After the electron has travel
Murljashka [212]

Answer:

v =  6.45 10⁻³ m / s

Explanation:

Electric force is

               F = q E

Where q is the charge and E is the electric field

Let's use Newton's second law to find acceleration

                F- W = m a

               a = F / m - g

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Let's calculate

               a = -1.6 10⁻¹⁹ / 9.1 10⁻³¹ (-1.30 10⁻¹⁰) - 9.8

              a = 0.228 10² -9.8

              a=  13.0 m / s²

Now we can use kinematics, knowing that the resting parts electrons

              v² = v₀² + 2 a y

              v =√ (0 + 2 13.0 1.6 10⁻⁶)

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3 years ago
8. A driver starts his parked car and within 12 hours reaches a speed of 75km/h, as he travels
erastovalidia [21]

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2 years ago
A classmate is attempting to draw a free body diagram for a box being pushed across the floor at a constant speed. The image bel
aivan3 [116]

Answer:

A. The applied force should be the same size as the friction force

Explanation:

Whenever we apply a force to an object it moves if the force applied to that object is unbalanced and there is no force or a lesser force to counter it. According to Newton's Second Law of motion, when an unbalanced force is applied to an object it produces an acceleration in the object in its own direction. So, the two forces acting on this box are the frictional force and the applied force in horizontal direction. In order to move the box at constant speed, the applied force must first, overcome the frictional force, so the object can start its motion. Since, the motion has constant velocity, it means no acceleration. So, the force must be balanced in order to avoid acceleration as a consequence of Newton's Second Law of motion. Therefore, the correction in this case will be:

<u>A. The applied force should be the same size as the friction force</u>

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3 years ago
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3 years ago
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