皮皮学，免费搜题
登录
搜题
【简答题】
如图，光滑长木板AB可绕O转动，质量不计，A端用竖直绳与地板上拉着，在离O点0.4 m的B处挂一密度为0.8×l0 3 kg/m 3 ；长20cm 的长方形物体，当物体浸入水中10cm深处静止时，从到溢水口的杯中溢出0.5N的水（g = 10N/kg），求： ①物体受到的浮力（3分） ②物体的重力（4分） ③当一质量为200g的球从O点以2 cm/s的速度沿木板向A端匀速运动时，问球由O点出发多少时间，系在A端的绳拉力刚好为零？（5分）
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】She devoted herself entirely ________ helping the children who suffered a lot from the earthquake. [      ]
A.
in
B.
for
C.
to
D.
with
查看完整题目与答案
【单选题】微机中1K字节表示的二进制位数是
A.
8×1000
B.
1024
C.
8×1024
D.
1000
查看完整题目与答案
【判断题】微机中１k字节表示的二进制位数是1024。
A.
正确
B.
错误
查看完整题目与答案
【单选题】1字节表示几位二进制数
A.
2
B.
4
C.
8
D.
18
查看完整题目与答案
【单选题】当公共权力被滥用、政府官员因不尽职而造成国家和集体的利益受到损害、人民群众的权益受到威胁时,公民,请举起你手中的“利剑”,依法同腐败分子作斗争。公民手中的“利剑”是指
A.
公民的监督权
B.
公民的惩罚权
C.
公民的选举权
D.
公民的罢免权
查看完整题目与答案
【单选题】According to the text．Mafia suffered from stress disorder because_______.
A.
she witnessed a gun battle
B.
she was wounded by a bullet
C.
she worried about her mother
D.
she was scared of her checkup
查看完整题目与答案
【单选题】微机中1K字节表示的二进制位数有
A.
1024
B.
1000
C.
8x1024
D.
8x1000
查看完整题目与答案
【简答题】A．She had long suffered from ill-health. B．She had a passion for traditional Mexican dresses. C．She had a strong belief in the equality between men and women. D．She regretted that. she had married to ...
查看完整题目与答案
【判断题】计算机中1K字节表示的二进制位数是8×1024。
A.
正确
B.
错误
查看完整题目与答案
【单选题】She suffered temporary loss of _______ after being struck on the head.-
A.
view
B.
vision
C.
illusion
D.
eye
查看完整题目与答案
相关题目：
【单选题】She devoted herself entirely ________ helping the children who suffered a lot from the earthquake. [      ]
A.
in
B.
for
C.
to
D.
with
查看完整题目与答案
【单选题】微机中1K字节表示的二进制位数是
A.
8×1000
B.
1024
C.
8×1024
D.
1000
查看完整题目与答案
【判断题】微机中１k字节表示的二进制位数是1024。
A.
正确
B.
错误
查看完整题目与答案
【单选题】1字节表示几位二进制数
A.
2
B.
4
C.
8
D.
18
查看完整题目与答案
【单选题】当公共权力被滥用、政府官员因不尽职而造成国家和集体的利益受到损害、人民群众的权益受到威胁时,公民,请举起你手中的“利剑”,依法同腐败分子作斗争。公民手中的“利剑”是指
A.
公民的监督权
B.
公民的惩罚权
C.
公民的选举权
D.
公民的罢免权
查看完整题目与答案
【单选题】According to the text．Mafia suffered from stress disorder because_______.
A.
she witnessed a gun battle
B.
she was wounded by a bullet
C.
she worried about her mother
D.
she was scared of her checkup
查看完整题目与答案
【单选题】微机中1K字节表示的二进制位数有
A.
1024
B.
1000
C.
8x1024
D.
8x1000
查看完整题目与答案
【简答题】A．She had long suffered from ill-health. B．She had a passion for traditional Mexican dresses. C．She had a strong belief in the equality between men and women. D．She regretted that. she had married to ...
查看完整题目与答案
【判断题】计算机中1K字节表示的二进制位数是8×1024。
A.
正确
B.
错误
查看完整题目与答案
【单选题】She suffered temporary loss of _______ after being struck on the head.-
A.
view
B.
vision
C.
illusion
D.
eye
查看完整题目与答案