本课配套习题挑战模式1/5
用弹簧测力计测出一个物体重为4N,然后将该物体浸没在水中,这时弹簧测力计的示数变为3N,则该物体在水中受到的浮力是( )
A: 7N |
B: 4N |
C: 3N |
D: 1N |
- 提示1:PHA+54mp5L2T5Y+X5Yiw55qE5rWu5Yqb562J5LqO6YeN5Yqb5YeP5Y675ZCR5LiK55qE5ouJ5YqbPC9wPg==
- 答案:RA==
PHA+5bey55+lRz00Tu+8jEbigLI9M07vvIzliJk8YnI+6K+l54mp5L2T5Zyo5rC05Lit5Y+X5Yiw55qE5rWu5YqbRjxzdWI+5rWuPC9zdWI+PUctRuKAsj00Ti0zTj0xTi48YnI+5pWF6YCJRC48L3A+
本课配套习题挑战模式2/5
A: 铁块的质量 |
B: 铁块所受的浮力 |
C: 铁块所受的重力与浮力之差 |
D: 铁块所受的重力 |
- 提示1:IOa1uOayoeWcqOawtOS4reeahOaXtuWAmeeJqeS9k+WPl+WIsOS4ieS4quWKmw==
- 提示2:IOmHjeWKm+aWueWQkeerluebtOWQkeS4iw==
- 提示3:IOa1ruWKm+WSjOaLieWKm+aWueWQkeerluebtOWQkeS4ig==
- 答案:Qw==
5rW45rKh5Zyo5rC05Lit55qE6ZOB5Z2X5Y+X5Yiw56uW55u05ZCR5LiL55qE6YeN5Yqb44CB56uW55u05ZCR5LiK55qE5rWu5Yqb5Lul5Y+K56uW55u05ZCR5LiK55qE5by557Cn5rWL5Yqb6K6h55qE5ouJ5Yqb77yM5qC55o2u5Yqb55qE5ZCI5oiQ55qE55+l6K+G5Y+v55+l77ya6YeN5YqbPea1ruWKmyvmi4nlipvvvIzlm6DmraTlvLnnsKfmtYvlipvorqHnmoTnpLrmlbDnrYnkuo7pk4HlnZfmiYDlj5fnmoTph43lipvkuI7mta7lipvkuYvlt64uIDxicj7mlYXpgIlDLiA=
本课配套习题挑战模式3/5
A: 29.4N |
B: 19.6N |
C: 9.8N |
D: 49N |
- 提示1:IOeJqeS9k+WPl+WIsOeahOa1ruWKm+etieS6jumHjeWKm+WHj+WOu+WQkeS4iueahOaLieWKmw==
- 答案:Qw==
54mp5L2T5Y+X5Yiw55qE5rWu5Yqb77yaRjxzdWI+5rWuPC9zdWI+PTI5LjROLTE5LjZOPTkuOE7vvJs8YnI+5pWF6YCJQy4g
本课配套习题挑战模式4/5
A: 5N |
B: 3N |
C: 2N |
D: 1N |
- 提示1:IOW8ueewp+a1i+WKm+iuoeekuuaVsOacgOWwj+eahOaXtuWAmea1ruWKm+acgOWkpw==
- 提示2:IOa1uOayoeS7peWQjuW8ueewp+a1i+WKm+iuoeekuuaVsOS4jeWPmA==
- 提示3:IOa1ruWKm+etieS6jumHjeWKm+WHj+WOu+a1uOayoeWQjueahOaLieWKmw==
- 答案:Qw==
55Sx5Zu+5Y+v55+l77yM6YeR5bGe5Z2X6YeNRz01Tu+8jOWFqOa1uOWFpeawtOS4reW8ueewp+a1i+WKm+iuoeeahOekuuaVsEY8c3ViPuekujwvc3ViPj0zTu+8jDxicj7lvZPph5HlsZ7lnZflhajmtbjlhaXml7bvvJo8YnI+RjxzdWI+5rWuPC9zdWI+PUctRjxzdWI+56S6PC9zdWI+PTVOLTNOPTJOLiA8YnI+5pWF6YCJQy4g
本课配套习题挑战模式5/5
一个体积为V重为G的金属圆柱体挂在弹簧测力计上(圆柱体底面与水面平行),手提弹簧测力计使圆柱体浸入水中处于静止状态,如图所示. 圆柱体上底面受到水向下的压力为F1,圆柱体下底面受到水向上的压力为F2,圆柱体受到的浮力为F浮,测力计的示数为T,则下列表达式正确的是( )
A: T+F2=G+F1 |
B: F1-F2=ρ水gV |
C: F2+F1=ρ水gV |
D: F2=G+F1 |
- 提示1:PHA+5YWI55So5Y6L5Yqb5beu5rOV5rGC5Ye654mp5L2T5rWu5YqbPC9wPg==
- 提示2:PHA+6YCa6L+H56ew6YeN5rOV6KGo56S65Ye65ZCE5Liq5Yqb5LmL6Ze055qE5YWz57O7PC9wPg==
- 提示3:PHA+55SoRjxzdWI+5rWuPC9zdWI+Pc+BPHN1Yj7msLQ8L3N1Yj5nVjxzdWI+5o6SPC9zdWI+5Luj5YWl5byP5a2QPC9wPg==
- 答案:Qw==
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