> For the complete documentation index, see [llms.txt](https://d2m.doyoki.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://d2m.doyoki.com/week-12.md).

# Week 12

## Abrasive

{% embed url="<https://youtu.be/j5ko-jBzWyo>" %}

## Grinder

{% embed url="<https://youtu.be/X8i7Ga1UqEE>" %}

## Deburring

{% embed url="<https://youtu.be/_tONNrgRcr0>" %}

## Friction Wear

{% embed url="<https://youtu.be/po8nPpQuc4w>" %}

##

{% embed url="<https://youtu.be/WqosdsxdrQY>" %}

## Lubrication

{% embed url="<https://youtu.be/tYkg0oDUXs8>" %}

## Mechanical Surface

{% embed url="<https://youtu.be/WtDU1Oov4so>" %}

## Laser-beam

{% embed url="<https://youtu.be/MkHZd1Exm7Q>" %}

## Abrasive-jet

{% embed url="<https://youtu.be/8Hn_UMNqFmQ>" %}

{% embed url="<https://youtu.be/JrABygW4dSw>" %}

{% embed url="<https://youtu.be/042ktL8WcEM>" %}

## Engineering Management

### 1. Depreciation

| Year | Depreciation for year | Sum of Depreciation | Book Value        | TAX    |
| ---- | --------------------- | ------------------- | ----------------- | ------ |
| 1    | $ 277                 | $ 277               | 900 - 277 = $ 623 | $ 62.3 |
| 2    | $ 221                 | $ 498               | 900 - 498 = $ 402 | $ 40.2 |
| 3    | $ 166                 | $ 664               | 900 - 664 = $ 236 | $ 23.6 |
| 4    | $ 111                 | $ 775               | 900 - 775 = $ 125 | $ 12.5 |
| 5    | $ 55                  | $ 830               | 900 - 830 = $ 70  | $ 7    |

### 2. Inflation  0.085%&#x20;

| Year | Electricity                 |
| ---- | --------------------------- |
| 1    | $ 55,000 (1.085)^0 = 55,000 |
| 2    | $ 55,000 (1.085)^1 = 59,675 |
| 3    | $ 55,000 (1.085)^2 = 64,747 |
| 4    | $ 55,000 (1.085)^3 = 70,251 |
| 5    | $ 55,000 (1.085)^4 = 76,222 |

## NASA

{% embed url="<https://youtu.be/bGD_YF64Nwk>" %}

{% embed url="<https://youtu.be/65ie_FgthKQ>" %}

{% embed url="<https://youtu.be/csV0BCWZ0oA>" %}

## FINAL

![](/files/-LSNv9N_On0JbHcSmb3V)

![](/files/-LSNvFMYZh8rwxcIXHvE)

![](/files/-LSNvSjC4fJzRDlrXjMK)

![](/files/-LSNvW_VslM0_fQAKUtp)