Questions 1. Draw an energy transfer diagram for: a. Dewi walking to school b. Dewi climbing the steps - id2143613520230506 от idrisovbulat 06.05.2023 10:11

Question

Физика: Questions 1. Draw an energy transfer diagram for: a. Dewi walking to school b. Dewi climbing the steps of a slide, sliding down, and stopping. 2. Describe what is meant by energy is dissipated . 3. Suggest how energy is dissipated from: a. an electric kettle b. a car travelling on a road. 4. Suggest why it is hard to describe dissipation when you talk about heating a home.

idrisovbulat · Accepted Answer

M₁=10 г=0,01 кг m₁v₁+m₂v₂ -сумма импульсов до взаимодействия
m₂=500 г=0,5 кг доски и пули;
v₂=0 (m₁+m₂)v - импульс доски и пули;
v=10 м/с применяем з-н сохранения импульсов:
v₁=-? m₁v₁+m₂v₂=(m₁+m)₂v; т. к. v₂=0,то имеем следующее ур-е: m₁v₁=(m₁+m₁)v: выразим (v₁),
v₁=(m₁+m₂)v/m₁;
v₁=(0,01+0,5)10/0,,01=510 м/c.

MOGZ ответил