本课配套习题挑战模式1/5
单选题
难度系数:
1.两物体重力之比为1:2,与水平桌面接触面积之比为1:2,它静止时对桌面压强之比为( )
A: 1:1 |
B: 1:2 |
C: 2:1 |
D: 1:4 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOeJqeS9k+aUvuWcqOawtOW5s+ahjOmdouS4iu+8jOWvueawtOW5s+ahjOmdoueahOWOi+WKm+etieS6jueJqeS9k+eahOmHjQ==
- 提示2:IOefpemBk+WOi+WKm+S5i+avlO+8jOefpemBk+WPl+WKm+mdouenr+S5i+avlO+8jOagueaNruWOi+W8uuWFrOW8j+axguWHuuS4pOS4queJqeS9k+WvueawtOW5s+ahjOmdoueahOWOi+W8uuS5i+avlA==
- 答案:QQ==
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本课配套习题挑战模式2/5
单选题
难度系数:
2.两物体放在水平地面上,质量之比为2:3,和地面接触面积之比为4:3,则它们对地面的压强之比为( )
A: 9:8 |
B: 1:2 |
C: 2:1 |
D: 8:9 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOawtOW5s+mdouS4iueJqeS9k+eahOWOi+WKm+WSjOiHqui6q+eahOmHjeWKm+ebuOetie+8jOWPiOefpemBk+eJqeS9k+eahOi0qOmHj+S5i+avlOWSjOaOpeinpumdouenr+S5i+avlO+8jOagueaNruWOi+W8uuWFrOW8j+WSjOmHjeWKm+WFrOW8j+W+l+WHuuWOi+W8uuS5i+avlA==
- 答案:Qg==
PGRpdj48aW1nIHdpZHRoPTIyNyBoZWlnaHQ9ODggc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9GRC81Qy9yQkFDRkZNSjVIT1FIMDdIQUFBS2xtZlJibTQ0NjcucG5nIiA+77yM5YiZ6YCJ5oupQumAiemhueOAgjwvZGl2Pg==
本课配套习题挑战模式3/5
单选题
难度系数:
3.A、B两个均匀物体,都放在水平桌面上,底面积之比为SA:SB=4:1,它们对水平桌面的压强之比PA:PB=1:2,则A,B两物体重力之比GA:GB是( )
A: 1:2 |
B: 2:1 |
C: 1:8 |
D: 8:1 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOagueaNruW6lemdouenr++8iOWPl+WKm+mdouenr++8ieS5i+avlOWSjOWOi+W8uuS5i+avlOaxguWOi+WKm+S5i+avlO+8jOeJqeS9k+aUvuWcqOawtOW5s+mdouS4iu+8mkY9R++8jOS7juiAjOW+l+WHuueJqemHjeavlOWAvA==
- 答案:Qg==
PGRpdj48aW1nIHdpZHRoPTEyNiBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yMC80Ni9yQkFDRTFNSjVIYlN5M3dyQUFBRERXeFgxMms4MDIucG5nIj7vvIzliJnpgInmi6lC6YCJ6aG544CCPC9kaXY+
本课配套习题挑战模式4/5
单选题
难度系数:
4.两个密度之比2:3,高度之比为5:2的金属圆柱体,底面积之比是1:2,则这两个物体对水平地面的压力、压强之比分别为( )
A: 5:6、5:3 |
B: 5:2、5:3 |
C: 5:6、3:2 |
D: 3:2、5:6 |
一次做对,真牛!
+5奖励规则>
- 提示1:IEY9Rz1tZz3PgVZnPc+Bc2hn
- 提示2:IDxpbWcgd2lkdGg9MzIgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvRkQvNUMvckJBQ0ZGTUo1SGlSRm9GTkFBQUJmU3Z0Vy1BNjI2LnBuZyI+
- 答案:QQ==
PGRpdj5GPUc9bWc9z4FWZz3PgXNoZ++8jOi/meS4pOS4queJqeS9k+WvueawtOW5s+WcsOmdoueahOWOi+WKm+S5i+avlDU6Nu+8mzxpbWcgd2lkdGg9MzIgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvRkQvNUMvckJBQ0ZGTUo1SGlSRm9GTkFBQUJmU3Z0Vy1BNjI2LnBuZyI+77yM6L+Z5Lik5Liq54mp5L2T5a+55rC05bmz5Zyw6Z2i55qE5Y6L5by65LmL5q+U5Li6NToz77yM5YiZ6YCJ5oupQemAiemhueOAgjwvZGl2PjxkaXY+
本课配套习题挑战模式5/5
单选题
难度系数:
5.甲、乙两个实心正方体密度之比3:4,边长之比2:1,若它们平放在水平桌面上,则两物体重力之比、对桌面的压强之比分别为( )
A: 1:1、1:4 |
B: 6:1、2:3 |
C: 6:1、3:2 |
D: 3:4、3:2 |
一次做对,真牛!
+5奖励规则>
- 提示1:IEY9Rz1tZz08aW1nIHdpZHRoPTY4IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwL0ZELzVDL3JCQUNGRk1KNUh6eUd4dXpBQUFDRUM5SkstWTAwNi5wbmciPg==
- 提示2:IDxpbWcgd2lkdGg9NjEgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMjAvNDYvckJBQ0UxTUo1SHpCUlJLY0FBQUIyU0Izb1l3MDIyLnBuZyI+
- 答案:Qw==
PGRpdj5GPUc9bWc9PGltZyB3aWR0aD02OCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9GRC81Qy9yQkFDRkZNSjVIenlHeHV6QUFBQ0VDOUpLLVkwMDYucG5nIj7vvIzliJnkuKTkuKrniankvZPnmoTph43lipvkuYvmr5TkuLo2OjHvvJs8aW1nIHdpZHRoPTYxIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzIwLzQ2L3JCQUNFMU1KNUh6QlJSS2NBQUFCMlNCM29ZdzAyMi5wbmciPu+8jOWImeS4pOS4queJqeS9k+WvueahjOmdoueahOWOi+W8uuS5i+avlOS4ujM6Mu+8jOaJgOS7pemAieaLqUPpgInpobnjgII8L2Rpdj4=