Rotational basic parameter - 无忧得胜-网上国际课程 (5edu.win)

1#

05.11: A wheel of radius 0.1 m (wheel A) is attached by a norqm,dcyh z-:6o *w (czn-stretching belt to a wheel of radius 0.2 m (wheel B). The belt does not slip. If wheel B turwcmzr,d -:q*y(ocz 6hns through 1 revolution, wheel A will rotate through

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

03.01: The diagram below is a snapshot of three cars all moving ,rpmqou -2 o-a1en.n ccounterclockwise during a one lap race on an elliptical trq-,po1n amon.2c -uerack.
Which car has had the lowest average speed during the race so far?

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

03.02: The diagram below is a snapshot ofptz;5b1 o24eyr;clk h three cars all moving counterclockwise during a one laplr2 5k4tchp1y zebo;; race on an elliptical track.
Which car at the moment of the snapshot MUST have a net force acting on it?

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

03.03: The diagram below is a snapshot of three cars all movi37 t 0kiihc7 h(cgifk;ng counterclockwise during a one lap race on ic cf770giik3hth ; (kan elliptical track.
Which car can finish the race without changing its present momentum?

A. carA

B. car B

C. car C

D. none of the three cars can finish the race with its present momentum

E. cannot be determined with information provided

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

12.25: Which one of the following choices best represents the average angul1vt(,xu*; qxrs9t8q klpve(uar speed of the hour hand onr;1 v9,(l8xpes v *(uuxtkqqt a standard clock (in units of rad/s)?

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

00.40: Suppose two cars are racing on a cirq ,zcd(xzt / .4qp)muscular track one kilometer in circumference. The first car can circle the tqds.( ,px)/zcu mq4tzrack in 15 seconds at top speed while the second car can circle the track in 12 seconds at top speed. How much lead does the first car need starting the last lap of the race not to lose?

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

09.16: What condition must be met in (2g sx :pfv3uxat4q wwq-,m9y order to use the rotational kinematics p gw2xf-uwqsv 4:m9,a3yx tq(equation $\Delta\theta=w_0t+\frac{2}{1}αt^{2}$

A. The angular acceleration is constant.

B. The angular velocity is constant.

C. The linear acceleration is zero.

D. The angular acceleration is zero.

E. There is no restriction on the use of this equation.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

标记此题

8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

05.32: A turntable plays a record by spinning at a constant ratb);utuc3jr 2o e of 45 rev/min. What is the average angular acceleration of the j2 ou;r)tb3u crecord to reach this final angular speed, having started from rest, if it takes 8 seconds to do so? All answers are in units of rad/s2.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

17.18: A disk of radius 7 6 px:pun)bh4e5.0 cm makes 3.5 revolutions when coming to rest in 2.50 s. What was thbuxn pp6:4 e)he initial angular speed of the disk?

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

08.12: What is the average angular speed of the secondhand on a c vp *:fasp(r2rs-j dt4lock (in rad/s)rf-42 p*a( s:rsptd jv?

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

账号		自动登录	找回密码
密码			立即注册

网页聊天 (离线可收发)

加微信咨询 (申请一对一课程辅导，加本站学习交流群）

电话咨询：

联系管理员：

查看帮助：

未使用图片

本次作答已使用