1
绗叚绔?/p>
鐗╄川鐨勭墿鐞嗗睘鎬х煡璇嗘⒊鐞?/p>
1.
璐ㄩ噺锛?/p>
鈶?/p>
瀹氫箟锛氱墿浣撴墍鍚墿璐ㄧ殑澶氬皯鍙川閲忋�?/p>
鈶?/p>
鍗曚綅锛氬浗闄呭崟浣嶅埗鍗曚綅
kg
锛屽父鐢ㄥ崟浣嶏細
t g mg
瀵硅川閲忕殑鎰熸�ц璇嗭細涓�鏋氬ぇ澶撮拡绾?/p>
80mg
涓�涓嫻鏋滅害
150g
涓�澶村ぇ璞＄害
6t
涓�鍙浮绾?/p>
2kg
鈶?/p>
璐ㄩ噺鐨勭悊瑙ｏ細鍥轰綋鐨勮川閲忎笉闅忕墿浣撶殑褰㈡�併�佺姸鎬併�佷綅缃�佹俯搴?/p>
鑰屾敼鍙橈紝鎵�浠ヨ川閲忔槸鐗╀綋
鍥烘湁鐨勪竴绉嶅睘鎬с�?/p>
鈶?/p>
娴嬮噺锛?/p>
鈶?/p>
鏃ュ父鐢熸椿涓父鐢ㄧ殑娴嬮噺宸ュ叿锛氭绉ゃ�佸彴绉ゃ�佹潌绉わ紝瀹為獙瀹ゅ父鐢ㄧ殑娴嬮噺宸ュ叿鎵樼洏澶╁钩锛屼篃鍙?
鐢ㄥ脊绨ф祴鍔涜娴嬪嚭鐗╅噸锛屽啀閫氳繃鍏紡
m=G/g
璁＄畻鍑虹墿浣撹川閲忋�?/p>
鈶?/p>
鎵樼洏澶╁钩鐨勪娇鐢ㄦ柟娉曪細
浜屽崄鍥涗釜瀛楋細
姘村钩鍙颁笂
,
娓哥爜褰掗浂
,
妯骞宠
,
宸︾墿鍙崇牆
,
鍏堝ぇ鍚庡皬
,
妯骞宠 銆傚叿浣撳涓?/p>
:
A
锛?/p>
鈥滅湅鈥?/p>
锛氳瀵熷ぉ骞崇殑绉伴噺浠ュ強娓哥爜鍦ㄦ爣灏轰笂鐨勫垎搴﹀�笺�?/p>
B
锛?/p>
鈥滄斁鈥?/p>
锛氭妸澶╁钩鏀惧湪姘村钩鍙颁笂锛屾妸娓哥爜鏀惧湪鏍囧昂宸︾鐨勯浂鍒诲害绾垮銆?/p>
C
锛?/p>
鈥滆皟鈥?/p>
锛氳皟鑺傚ぉ骞虫í姊佸彸绔殑骞宠 铻烘瘝浣挎寚閽堟寚鍦ㄥ垎搴︾洏鐨勪腑绾垮锛岃繖鏃舵í姊佸钩琛°�?/p>
D
锛?/p>
鈥滅О鈥?/p>
锛氭妸琚祴鐗╀綋鏀惧湪宸︾洏閲岋紝鐢ㄩ晩瀛愬悜鍙崇洏閲屽姞鍑忕牆鐮侊紝骞惰皟鑺傛父鐮佸湪鏍囧昂涓婄殑浣嶇疆锛?
鐩村埌妯鎭㈠骞宠 銆?/p>
E
锛?/p>
鈥滆鈥?/p>
锛氳娴嬬墿浣撶殑璐ㄩ噺
=
鐩樹腑鐮濈爜鎬昏川閲?/p>
+
娓哥爜鍦ㄦ爣灏轰笂鎵�瀵圭殑鍒诲害鍊?/p>
F
锛庢敞鎰忎簨椤癸細
A
涓嶈兘瓒呰繃澶╁钩鐨勭О閲?/p>
B
淇濇寔澶╁钩骞茬嚗銆佹竻娲併�?/p>
鈶?/p>
鏂规硶锛?/p>
A
銆佺洿鎺ユ祴閲忥細鍥轰綋璐ㄩ噺鏂规硶
B
銆佺壒娈婃祴閲忥細娑蹭綋璐ㄩ噺鏂规硶銆佸井灏忚川閲忔柟娉曘�?/p>
鍋忓ぇ鍋忓皬锛氬綋鎸囬拡鍋忓悜鍒嗗害鐩樺乏杈癸紝娴嬮噺鍊兼瘮鐪熷疄鍊煎亸澶э紝褰撴寚閽堝亸鍚戝垎搴︾洏鍙宠竟锛屾祴閲忓�?/p>
姣旂湡瀹炲�煎亸灏忥紱
鐮濈爜纾ㄦ崯锛屾祴閲忓�兼瘮鐪熷疄鍊煎亸澶э紱鐮濈爜娌炬湁娌规薄鎴栧叾瀹冨皬鐗╀綋锛屾祴閲忓�兼瘮鐪熷疄鍊煎亸灏忋�?/p>
娓哥爜娌℃湁绉诲埌
0
鍒诲害鏃讹紝娴嬮噺鍊兼瘮鐪熷疄鍊煎亸澶э紝澶х殑鍊煎氨鏄父鐮佺殑璇绘暟銆?/p>
2.
瀵嗗害锛?/p>
鈶?/p>
瀹氫箟锛氬崟浣嶄綋绉殑鏌愮鐗╄川鐨勮川閲忓彨鍋氳繖绉嶇墿璐ㄧ殑瀵嗗害銆?/p>
鈶?/p>
鍏紡锛?/p>
m
v
飦?/p>
飥?
m
v
飦?/p>
飥?/p>
m=
蟻
v
鈶?/p>
鍗曚綅锛氬浗闄呭崟浣嶅埗鍗曚綅
kg/m
3
锛屽父鐢ㄥ崟浣?/p>
g/cm
3
銆傝繖涓や釜鍗曚綅姣旇緝锛?/p>
g/cm
3
鍗曚綅澶с�傚崟浣嶆崲
绠楀叧绯伙細
1g/cm
3
=10
3
kg/m
3
1kg/m
3
=10
-3
g/cm
3
銆傛按鐨勫瘑搴︿负
1.0
脳
10
3
kg/m
3
锛岀墿鐞嗘剰涔夋槸锛?
1
绔嬫柟绫崇殑姘寸殑璐ㄩ噺涓?/p>
1.0
脳
10
3
kg
銆?/p>
鈶?/p>
鐞嗚В瀵嗗害鍏紡
:
m
v
飦?/p>
飥?
鈶?/p>
鍚岀鏉愭枡锛屽悓绉嶇墿璐紝蟻涓嶅彉锛?/p>
m
涓?/p>
V
鎴愭姣旓級
锛?/p>
鈶?/p>
鐗╀綋鐨勫瘑搴ο佷笌鐗╀綋鐨勮川閲忋�佷綋绉�佸舰鐘舵棤鍏筹紝浣嗕笌璐ㄩ噺鍜屼綋绉殑姣斿�兼湁鍏筹紱
鈶?/p>
涓嶅悓鐗╄川锛岃川閲忕浉鍚屾椂锛屼綋绉ぇ鐨勫瘑搴﹀皬锛?/p>
鈶?/p>
涓嶅悓鐗╄川锛屼綋绉浉鍚屾椂锛岃川閲忓ぇ鐨勫瘑搴﹀ぇ銆?/p>
鈶?/p>
瀵嗗害闅忔俯搴︺�?/p>
鍘嬪己銆佺姸鎬佺瓑鏀瑰彉鑰屾敼鍙橈紝涓嶅悓鐗╄川瀵嗗害涓�鑸笉鍚岋紝鎵�浠ュ瘑搴︽槸鐗╄川鐨勪竴绉?/p>
鐗规�с�?/p>
鈶?/p>
鍥捐薄锛氬乏鍥炬墍绀猴細蟻
鐢?/p>
>
蟻
涔?/p>
鈶?/p>
浣撶Н娴嬮噺鈥斺�旈噺绛掞紙閲忔澂锛?/p>
鈶?/p>
鐢ㄩ�旓細娴嬮噺娑蹭綋浣撶Н锛堥棿鎺ュ湴鍙祴鍥轰綋浣撶Н锛?/p>
銆?/p>
鈶?/p>
浣跨敤鏂规硶锛?/p>
鈥滅湅鈥?/p>
锛氬崟浣嶏細姣崌锛?/p>
ml
锛?/p>
=
鍘樼背
3
( c
m
3
)
锛?/p>
閲忕▼锛涘垎搴﹀�笺�?/p>
鈥滄斁鈥?/p>
锛氭斁鍦ㄦ按骞冲彴涓娿�?/p>
鈥滆鈥?/p>
锛氶噺绛掗噷鐨勬按闈㈡槸鍑瑰舰鐨勶紝璇绘暟鏃讹紝瑙嗙嚎瑕佸拰鍑归潰鐨勫簳閮ㄧ浉骞炽�?/p>
鈶?/p>
娴嬪浐浣撶殑瀵嗗害锛?/p>
鈶?/p>
鍘熺悊锛氬師鐞嗭細蟻
=m/v
蟻
鐢?/p>
蟻
涔?/p>
m
V