1
瀛︿範鍐呭锛?/p>
瀵嗗害閮ㄥ垎璁＄畻棰樹笓椤硅缁?/p>
瀛︿範鐩爣锛?/p>
1
銆佽兘鐢ㄥ瘑搴﹀叕寮忚繘琛屾湁鍏崇殑璁＄畻锛?/p>
2
銆佽兘鐢ㄧ壒娈婃柟娉曞瀵嗗害杩涜娴嬮噺銆?/p>
瀛︿範閲嶇偣锛?/p>
瀵嗗害鍏紡鐨勬湁鍏宠绠楀拰鍑犵鐗规畩鐨勫簲鐢ㄩ銆?/p>
璇炬椂瀹夋帓锛?/p>
2
璇炬椂
渚嬮璁茶В
渚?/p>
1
銆佷笉鐢ㄥぉ骞筹紝鍙敤閲忕瓛锛屽浣曢噺鍑?/p>
100
鍏嬮厭绮炬潵锛?/p>
绛旓細
锛?/p>
1
锛夊厛璁＄畻鍑?/p>
100
鍏嬮厭绮剧殑浣撶Н锛?/p>
V=m/
蟻
=100g/(0.8g/cm
3
)=125cm
3
锛?/p>
2
锛夊啀鐢ㄩ噺绛掗噺鍑?/p>
125cm
3
鐨勯厭绮剧殑璐ㄩ噺灏辨槸
100
鍏嬨�?/p>
渚?/p>
2
锛庝笉鐢ㄩ噺绛掞紝鍙敤澶╁钩锛屽浣曠О鍑?/p>
5
姣崌鐨勬按閾舵潵锛?/p>
绛旓細
锛?/p>
1
锛夊厛璁＄畻鍑?/p>
5
姣崌姘撮摱鐨勮川閲忔槸锛?/p>
m=
蟻
V
=13.6g/cm
3
脳
5cm
3
)=68g
锛?/p>
2
锛夊啀鐢ㄥぉ骞崇О鍑?/p>
68g
鐨勬按閾剁殑浣撶Н灏辨槸
5
姣崌銆?/p>
渚?/p>
3
锛庣敤绉よ兘鍚︽祴鍑哄ⅷ姘寸摱鐨勫绉紵濡傝兘锛岃鍑哄姙娉曟潵銆?/p>
绛旓細鑳斤紱
锛?/p>
1
锛夊厛鐢ㄥぉ骞虫祴鍑虹┖澧ㄦ按鐡剁殑璐ㄩ噺
m
1
锛?/p>
锛?/p>
2
锛夋妸澧ㄦ按鐡惰婊℃按鍚庡啀绉板嚭鎬昏川閲?/p>
m
2
锛?/p>
锛?/p>
3
锛夌敤
m
2
-m
1
姹傚嚭姘寸殑璐ㄩ噺
m
锛?/p>
锛?/p>
4
锛夌敤鍏紡
V=m/
蟻
姘?/p>
姹傚嚭澧ㄦ按鐡朵腑姘寸殑浣撶Н锛屽垯澧ㄦ按鐡剁殑
瀹圭Н绛変簬姘寸殑浣撶Н銆?/p>
瀵嗗害璁＄畻棰樺熀纭�璁粌棰?/p>
锛堥檮绛旀锛?/p>
1
锛庝竴閲戝睘鍧楃殑璐ㄩ噺鏄?/p>
386g
锛屼綋绉槸
20cm
3
,
杩欑閲戝睘鍧楃殑瀵嗗害鏄灏?/p>
kg/m
3
锛?/p>
2
锛庢眰璐ㄩ噺涓?/p>
100g
銆佸瘑搴︿负
0.8
脳
10
3
kg/m
3
閰掔簿鐨勪綋绉紵
3
锛庢湁涓�绉嶉鐢ㄦ补鐨勭摱涓婃爣鏈夆�?/p>
5L
鈥濆瓧鏍凤紝宸茬煡娌圭殑瀵嗗害涓?/p>
0.92
脳
10
3
kg/m
3
锛屽垯璇ョ摱娌圭殑璐?/p>
閲忔槸澶氬皯鍗冨厠锛?/p>
4
锛庝汉鐨勫瘑搴﹀拰姘村樊涓嶅锛屼竴涓川閲忔槸
50kg
鐨勪腑瀛︾敓鐨勪綋绉ぇ绾︽槸澶氬皯
m
3
锛?/p>