1
2.21
鏌愬姙鍏ゼ宸ョ▼鍦拌川鍕樻帰涓彇鍘熺姸鍦熷仛璇曢獙銆?/p>
鐢ㄥぉ骞崇О
50cm
3
婀垮湡璐ㄩ噺涓?/p>
95.15g
锛岀儤骞插悗璐ㄩ噺涓?/p>
75.05g
锛屽湡绮掓瘮閲嶄负
2.67
銆傝绠楁鍦熸牱鐨勫ぉ鐒跺瘑搴︺�佸共
瀵嗗害銆侀ケ鍜屽瘑搴︺�佸ぉ鐒跺惈姘寸巼銆佸瓟闅欐瘮銆佸瓟闅欑巼浠ュ強楗卞拰搴︺�?/p>
銆愯В銆?/p>
m
= 95.15g
锛?/p>
m
s
= 75.05g
锛?/p>
m
w
= 95.15 - 75.05 = 20.1g
锛?/p>
V
= 50.0
cm
3
锛?/p>
d
s
= 2.67
銆?/p>
V
s
= 75.05/(2.67
飩?/p>
1.0) = 28.1 cm
3
鍙?/p>
g
= 10 m/s
2
锛屽垯
V
w
= 20.1 cm
3
V
v
= 50.0 - 28.1 = 21.9 cm
3
V
a
= 50.0
鈥?/p>
28.1
鈥?/p>
20.1 = 1.8 cm
3
浜庢槸锛?/p>
飦?/p>
=
m
/
V
= 95.15 / 50 = 1.903g/ cm
3
飦?/p>
d
=
m
s
/
V
= 75.05 / 50 = 1.501g/ cm
3
飦?/p>
s
a
t
= (
m
s
+
飦?/p>
w
飪?/p>
V
v
)/
V
= (75.05 + 1.0
飩?/p>
21.9) / 50 = 1.939g/ cm
3
w
=
m
w
/
m
s
= 20.1 / 75.05 = 0.268 = 26.8%
e
=
V
v
/
V
s
= 21.9 / 28.1 = 0.779
n
=
V
v
/
V
= 21.9 / 50 = 0.438 = 43.8%
S
r
=
V
w
/
V
v
= 20.1 / 21.9 = 0.918
2.22
涓�鍘傛埧鍦板熀琛ㄥ眰涓烘潅濉湡锛屽帤
1.2m
锛岀浜屽眰涓虹矘鎬у湡锛屽帤
5m
锛屽湴涓嬫按
浣嶆繁
1.8m
銆傚湪绮樻�у湡涓儴鍙栧湡鏍峰仛璇曢獙锛屾祴寰楀ぉ鐒跺瘑搴?/p>
飦?/p>
=
1.84g/
cm
3
锛屽湡绮掓瘮
閲嶄负
2.75
銆傝绠楁鍦熸牱鐨勫ぉ鐒跺惈姘寸巼
w
銆佸共瀵嗗害
飦?/p>
d
銆佸瓟闅欐瘮
e
鍜屽瓟闅欑巼
n
銆?/p>
銆愯В銆戜緷棰樻剰鐭ワ紝
S
r
= 1.0
锛?/p>
飦?/p>
s
a
t
=
飦?/p>
= 1.84g/ cm
3
銆?/p>
鐢?
锛屽緱
n
=
e
/(1 +
e
) = 1.083 /(1 + 1.083) = 0.520
g/cm
3
銆?/p>
2.23
鏌愬棣嗗湴鍩哄湡鐨勮瘯楠屼腑锛屽凡娴嬪緱鍦熸牱鐨勫共瀵嗗害
飦?/p>
d
= 1.54g/ cm
3
锛屽惈姘?/p>
鐜?/p>
w
=
19.3%
锛屽湡绮掓瘮閲嶄负
2.71
銆傝绠楀湡鐨勫瓟闅欐瘮
e
銆佸瓟闅欑巼
n
鍜岄ケ鍜屽害
S
r
銆傚張
娴嬪緱璇ュ湡鏍风殑娑查檺涓庡闄愬惈姘寸巼鍒嗗埆涓?/p>
w
L
= 28.3%
锛?/p>
w
p
= 16.7%
銆傝绠楀鎬ф寚鏁?/p>
I
p
鍜屾恫鎬ф寚鏁?/p>
I
L
锛屽苟鎻忚堪鍦熺殑鐗╃悊鐘舵�侊紝涓鸿鍦熷畾鍚嶃�?/p>
銆愯В銆戯紙
1
锛?/p>
飦?/p>
=
飦?/p>
d
(1 +
w
) = 1.54
飩?/p>
(1 + 0.193) = 1.84g/ cm
3
n
=
e
/(1 +
e
) = 0.757 /(1 + 0.757) = 0.431
锛?/p>
2
锛?/p>
I
p
=
w
L
-
w
p
= 28.3
鈥?/p>
16.7 = 11.6
I
L
= (
w
L
-
w
) /
I
p
= (28.3
鈥?/p>
19.3)/11.6 = 0.776