<div><div style="mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><table align="left" cellpadding="0" cellspacing="0"><tbody><tr><td align="left" style="padding: 0cm 9.0pt 0cm 9.0pt;" valign="top"><p class="MsoNormal"><span style=" "><span style="">- </span><span style="">Các chất được cấu tạo từ các hạt riêng biệt gọi là nguyên tử, phân tử.</span></span></p><p class="MsoNormal"><span style=" "><span style="">- </span><span style="">Giữa chúng có khoảng cách. </span></span></p><p class="MsoNormal"><span style=" "><span style="">- </span><span style="">Ví dụ:….</span></span></p></td></tr></tbody></table></div></div>

<div><table border="1" cellpadding="0" cellspacing="0" class="MsoNormalTable" style="border-collapse: collapse; mso-table-layout-alt: fixed; border: none; mso-border-alt: solid windowtext .5pt; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid windowtext; mso-border-insidev: .5pt solid windowtext;"><tbody><tr style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes; height: 141.25pt;"><td style="width: 157.55pt; border: solid windowtext 1.0pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 141.25pt;" valign="top" width="315"><p class="MsoBodyTextIndent" style="margin: 0cm; margin-bottom: .0001pt;   mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><span style=""><strong style="mso-bidi-font-weight: normal;"><span style=" ">Tóm tắt</span></strong></span></p><p class="MsoBodyTextIndent" style="margin: 0cm; margin-bottom: .0001pt;   mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><span style="  ">m = 100kg</span></p><p class="MsoBodyTextIndent" style="margin: 0cm; margin-bottom: .0001pt;   mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><span style="  ">-> P = 1000N</span></p><p class="MsoBodyTextIndent" style="margin: 0cm; margin-bottom: .0001pt;   mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><span style="  ">h = 200cm = 2m</span></p><p class="MsoBodyTextIndent" style="margin: 0cm; margin-bottom: .0001pt;   mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><span style="  ">t = 0,5s</span></p><p class="MsoBodyTextIndent" style="margin: 0cm; margin-bottom: .0001pt;   mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><span style="  ">P= ?</span></p></td><td style="width: 237.45pt; border: solid windowtext 1.0pt; border-left: none; mso-border-left-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 141.25pt;" valign="top" width="475"><p class="MsoBodyTextIndent" style="margin: 0cm; margin-bottom: .0001pt;   mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><span style=""><strong style="mso-bidi-font-weight: normal;"><span style=" ">Giải</span></strong></span></p><p class="MsoBodyTextIndent" style="margin: 0cm; margin-bottom: .0001pt;   mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><span style="  ">Công của người lực sĩ thực hiện</span></p><p class="MsoBodyTextIndent" style="margin: 0cm; margin-bottom: .0001pt;   mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><span style="  ">A = P.h = 1000.2 = 2000(J)</span></p><p class="MsoBodyTextIndent" style="margin: 0cm; margin-bottom: .0001pt;   mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><span style="  ">Công suất của người lực sĩ là</span></p><p class="MsoBodyTextIndent" style="margin: 0cm; margin-bottom: .0001pt;   mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><span style="  ">P= 2000/0.5 = 4000(W)</span></p><p class="MsoBodyTextIndent" style="margin: 0cm; margin-bottom: .0001pt;   mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><span style="  ">Đáp số P= 4000(W)</span></p></td></tr></tbody></table></div>

<div><div style="mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><table align="left" cellpadding="0" cellspacing="0"><tbody><tr><td align="left" style="padding: 0cm 9.0pt 0cm 9.0pt;" valign="top"><p class="MsoNormal"><span style=" "><span style=""><span style="mso-spacerun: yes;">P </span></span><span style="">= A/t </span></span></p><p class="MsoNormal"><span style=" "><span style="">Trong đó P</span><span style="">là công suất (w)</span></span></p><p class="MsoNormal"><span style=" "><span style="">A là công thực hiện được (J)</span></span></p><p class="MsoNormal"><span style=" "><span style="">t là thời gian thực hiện (s)</span></span></p></td></tr></tbody></table></div></div>

<div><div><div style="mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: .05pt; mso-element-top: .05pt; mso-height-rule: exactly;"><table align="left" cellpadding="0" cellspacing="0"><tbody><tr><td align="left" style="padding: 0cm 9.0pt 0cm 9.0pt;" valign="top"><p class="MsoNormal"><span style="  mso-ansi-language: VI; mso-bidi-font-weight: bold;">- </span><span style=" ">Cơ năng của một vật phụ thuộc vào độ cao của vật so với mặt đất, hoặc so với một vị trí khác được chọn làm mốc để tính độ cao gọi là thế năng trọng trường. </span></p><p class="MsoNormal"><span style=" ">- Thế năng trọng trường phụ thuộc vào khối lượng và độ cao của vật.</span></p></td></tr></tbody></table></div></div></div>

Đề kiểm tra Giữa kì 2 Vật lí 8 có đáp án (Mới nhất) - Đề 21

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Giải bài tập tự luận: Đề kiểm tra Giữa kì 2 Vật lí 8 có đáp án (Mới nhất) - Đề 21, thời gian làm 15 phút/5 câu. Biên soạn bởi gia sư Nguyễn Ánh.