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Naily [24]
3 years ago
11

A 5 kg block accelerates across a horizontal surface at 7 m/s^2 when you exert a 60 N force on it. What is the force of friction

on the block (Ffs/b)?
If you don’t mind finding the kinetic friction coefficient too?
Physics
1 answer:
alina1380 [7]3 years ago
3 0
5 kg block and 7 m/s^2 = 14
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nikklg [1K]

Answer:

<u>0.04 °C⁻¹</u>

Explanation:

First, we need to calculate linear expansivity, then after finding that value, we can move on to finding the area expansivity.

<u />

=============================================================

Finding Linear Expansivity :

⇒ α = Final length - Original length / (Original length × ΔT)

⇒ α = 9 - 4 / (4 × 70 - 20)

⇒ α = 5 / 5 × 50

⇒ α = <u>0.02</u>

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Finding Area Expansivity :

⇒ Area Expansivity = 2 × Linear Expansivity

⇒ β = 2 × α

⇒ β = 2 × 0.02

⇒ β = <u>0.04 °C⁻¹</u>

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Place the left charge at the 2 cm position and the right one at the 4 cm position. Vary the left and right charge to the values
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Answer:

Explanation:

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= 9 x 10⁹ x 1 x 8 x 10⁻¹² / ( 2 x 10⁻² )²

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Left Charge   Right Charge Resulting force(N)

1μC                     4μC                  90 N

4μC                   1μC                    90 N

2μC                  2μC                    90 N

1μC                    2μC                   45 N

1μC                  8μC                    180 N

2μC                  8μC                  360 N

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