涓撻
3
璐ㄩ噺涓庡瘑搴?/p>
1
銆佸皬涓藉悓瀛︾敤璋冨ソ鐨勫ぉ骞崇О涓�涓墿浣撶殑璐ㄩ噺
,
褰撳彸鐩樹腑鏀句竴涓?/p>
50g
鍜屼袱涓?/p>
20g
鐨勭牆鐮?/p>
,
娓哥爜绉昏嚦
2.6g
浣嶇疆鏃?/p>
,
澶╁钩骞宠
,
鍒欑墿浣撶殑璐ㄩ噺涓?/p>
( )
A
銆?/p>
90g B
銆?/p>
90.3g C
銆?/p>
92.6g D
銆?/p>
92.3g
2.
鎵樼洏澶╁钩鏀惧湪姘村钩妗岄潰涓婏紝绉诲姩璋冭妭铻烘瘝浣垮ぉ骞冲钩琛℃椂锛屽繕璁板皢娓哥爜鏀惧湪鏍?/p>
灏虹殑闆跺埢搴﹀浜嗭紝杩欐牱娴嬪嚭鐨勭墿浣撹川閲忎笌鐗╀綋鐨勫疄闄呰川閲忔瘮杈冣�︹�︹�︼紙
锛?/p>
A.
鍋忓ぇ
B.
鐩哥瓑
C.
鍋忓皬
D.
鏃犳硶鍒ゆ柇
3
銆?/p>
鏍规嵁鍏紡蟻
=m/v,
鍒ゆ柇涓嬪垪璇存硶姝ｇ‘鐨勬槸锛?/p>
锛?/p>
A
锛庨搧鐨勫瘑搴﹁窡鍏惰川閲忔垚姝ｆ瘮
B
锛庨搧鐨勫瘑搴﹁窡鍏朵綋绉垚鍙嶆瘮
C
锛庨搧鐨勫瘑搴﹁窡璧疯川閲忔垚姝ｆ瘮锛岃窡鍏朵綋绉垚鍙嶆瘮
D
锛庨搧鐨勫瘑搴︽槸涓�瀹氱殑锛屼笉闅忚川閲忓拰浣撶Н鐨勫彉鍖栧拰鍙樺寲
4
锛庝竴涓摱瀛愭渶澶氳兘瑁呬笅
500 g
姘达紝鍒欒繖涓摱瀛愯兘瑁呬笅
500 g
鐨勪笅鍒楀摢绉嶇墿璐?/p>
A
锛庨叡娌?/p>
B
锛庨厭绮?/p>
C
锛庣叅娌?/p>
D
锛庢苯娌?/p>
5
銆?/p>
鐢ㄥぉ骞崇О娑蹭綋璐ㄩ噺
,
閫氬父鐨勬柟娉曟槸
:
鍏堢О鍑?/p>
______
鐨勮川閲?/p>
m
1
,
鍐嶇О鍑?/p>
______
鐨勮川
閲?/p>
m
2
,
鍒欒绉版恫浣撶殑璐ㄩ噺
m=_______.
6
銆佷粠灞变笂閲囦笅鏉ョ殑涓�鍧楀ぇ鐞嗙煶锛屽瘑搴︿负
2.7
脳
10
3
kg/m
3
,
鍚?/p>
g/cm
3
,
濡傛灉鎶?/p>
瀹冨垎鎴愪袱鍧楋紝姣忓潡鐨勫瘑搴︿负
g/cm
3
銆?/p>
7
銆佷竴鍧楅挗鏉跨殑瀵嗗害涓?/p>
7.8
脳
10
3
kg/m
3
,
娴嬪緱瀹冪殑璐ㄩ噺涓?/p>
39kg,
閭ｄ箞瀹冪殑浣?/p>
绉负
________m
3
,
鑻ユ埅鍘?/p>
1/3
锛屽墿浣欓儴鍒嗙殑瀵嗗害鏄?/p>
_________ g/cm
3
8
锛?/p>
鏌?/p>
娑?/p>
浣?/p>
鐨?/p>
璐?/p>
閲?/p>
鏄?/p>
110g
锛?/p>
浣?/p>
绉?/p>
鏄?/p>
100cm
3
锛?/p>
瀹?/p>
鐨?/p>
瀵?/p>
搴?/p>
鏄?
______g/cm
3
_______kg/m
3
銆?/p>
9
銆?/p>
A
銆?/p>
B
銆?/p>
C
涓夌鐗╄川鐨勮川閲?/p>
m
鍜屼綋绉?/p>
V
鐨勫叧绯诲浘璞″鍥?/p>
2
鎵�绀猴紝
鍒欏瘑搴︽渶澶х殑鐗╄川鏄伎锛匡伎锛屽瘑搴︽渶灏忕殑鐗╄川鏄伎锛匡伎锛裤�?/p>
10
銆佸皬鏄庡悓瀛﹀湪鐢ㄥぉ骞虫祴鐗╀綋璐ㄩ噺鐨?/p>
瀹為獙涓紝棣栧厛鍙栨潵鎵樼洏澶╁钩鏀惧湪姘村钩
妗岄潰涓婏紝鍙戠幇濡傚浘
10-2
鎵�绀烘儏鍐碉紟
(1)
浠栧簲閲囧彇鐨勬帾鏂芥槸
_______ _____
锛?/p>
(2)
澶╁钩璋冭妭骞宠 鍚庯紝灏忔槑鎸夊浘
10-3
鎵�绀虹殑