Physics Unit29: Molecules and Solids - WebAssign

?E-Test & E-Assign?Generic Physics?Physics Unit29: Molecules and Solids

My Identity | MyPast ExamLogs | My Wrong Records | My Saved Problems | Problems Database | Help

Unused Images

Tips: allowed image types are: gif, jpg, jpeg, png, webp; When uploading is finished, thumbnails will be generated and shown above. You can either double click on the thumbnail or simply drag the thumbnail with your mouse, the image will be bound to the current problem and displayed below it.

Used Images in Current Log

Tips: What is shown in this column are all the images associated with this exam log. Those bound to a particular problem will also be displayed immediately underneath it; Deleting any images will make them to be transfered to the "Unused images" category.

习题练习：Physics Unit29: Molecules and Solids
本Practice来源于WebAssign，是在线Practice的打印版，您也可以访问本平台网站(https://webassign.org/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 328 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；教师使用本平台可以抽题组卷或一键复制他人试卷，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。本试卷的直接作答链接 https://webassign.org/test328.html
作者: physics 发布日期: 2023-05-01 14:26

答题人: 匿名未登录开始时间: 23年05月01日 13:55 切换到: 整卷模式

1#

单选题搜藏此题

Covalent bonding is caused8jo;ed x)om tcg6.dwzyz+k l66tt 58b by (1.0 分)

A. the sharing of electrons between atoms.

B. the transfer of electrons between atoms.

C. unequal charge distributions around neutral molecules.

D. atoms bonding to hydrogen molecules.

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

2#

单选题搜藏此题

Ionic bonding is cause4 dr plf f.n-7o4kql*zd by (1.0 分)

A. the sharing of electrons between atoms.

B. the transfer of electrons between atoms.

C. unequal charge distributions around neutral molecules.

D. atoms bonding to hydrogen molecules.

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

3#

单选题搜藏此题

The bond energy for a hydrogen moleculekl7*. nhsz*(mk ghv1gv aj 16q is (1.0 分)

A. $2.5 \; eV$

B. $3.5 \; eV$

C. $4.5 \; eV$

D. $5.5 \; eV$

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

4#

单选题搜藏此题

Van der Waals bonding is caused u ptj7lvy1wu(-dc (.rby (1.0 分)

A. the sharing of electrons between atoms.

B. the transfer of electrons between atoms.

C. unequal charge distribution around neutral molecules.

D. atoms bonding to hydrogen molecules.

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

5#

单选题搜藏此题

In general, which of the following is the stroqbu4 yw/l5z 4vngest bond? (1.0 分)

A. hydrogen bond

B. van der Waals bond

C. ionic bond

D. covalent bond

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

6#

单选题搜藏此题

In general, which of the following is the weakest vei, r-h8it2lws pk-z b*6lk)j gp)j)bond? (1.0 分)

A. hydrogen bond

B. van der Waals bond

C. ionic bond

D. covalent bond

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

7#

单选题搜藏此题

For a diatomic quantum mechanical rotator, the eneregcax sc-ct)d2p,, 6t ecm .ua(1ra ;ggy difference between adjacent energyc.2u,rget-acc(;6 1peta, cdsaxg m ) levels (1.0 分)

A. increases as L increases.

B. decreases as L increases.

C. is constant for all L.

D. varies randomly as L increases.

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

8#

单选题搜藏此题

A diatomic quantum me5y. h a ekytu(d+bmn/3chanical rotator in the L = 1 quantum state has energy E. The same rotator in the L = 2 quantu+t (yebk35adu.yh/m nm state will have energy (1.0 分)

A. 2E.

B. 3E.

C. 6E.

D. none of the given answers

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

9#

单选题搜藏此题

In its lowest quantum state, the energy of a diatomica0i4i f+bx::0mf1glit sguw8tq4(hv harmonic oscillator is (1.0 分)

A. (1/4)hf.

B. (1/2)hf.

C. hf.

D. (3/2)hf.

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

10#

单选题搜藏此题

For a diatomic quantum mechanical vibrator, the energy difference between adj*kcsfl m va(-;acent quanlf(am kvc;-s* tum states (1.0 分)

A. increases as v increases.

B. decreases as v increases.

C. is constant for all values of v.

D. varies randomly as v increases.

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

11#

单选题搜藏此题

In its lowest quantum state, b(f7,vh gri f/lhcj223w5ajt a diatomic quantum mechanical rotator has a rotational g , 2lvah 2jjb5fi3twchr7f/( energy of (1.0 分)

A. zero.

B. $h/2 \pi I$.

C. $h/\pi I$.

D. none of the given answers

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Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，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

12#

单选题搜藏此题

A diatomic quantum mec5b4pqy6z p wbv(k1 aau4u16g qhanical vibrator in its ground state has energy E. This same vibrator in its third state hasu ka6pvu45gb zp(by aqw6q114 energy (1.0 分)

A. E.

B. 3E.

C. 5E.

D. 7E.

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

13#

单选题搜藏此题

Metallic bonding is cau, .jkab7y 4f*sbpm9+j +tmlqused by (1.0 分)

A. the sharing of electrons by all atoms.

B. the transfer of electrons between atoms.

C. unequal charge distributions around neutral molecules.

D. atoms bonding to hydrogen molecules.

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

14#

单选题搜藏此题

In a good conductor, the highk d0vg.sh h6:pest energy band containing electrons is (1.0 分)

A. only partially filled.

B. completely filled.

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

15#

单选题搜藏此题

In a good insulator, the highest energy band containing electronsz m4*;,0dvtmj fajr12bz+mz t, called the vale d4mva,zt j2fz tzm0* m;+bjr1nce band, is (1.0 分)

A. only partially filled.

B. completely filled.

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

16#

单选题搜藏此题

An n-type semiconductor is produced yxewhl.r u f m5+t.c3-by (1.0 分)

A. doping the host crystal with donor impurities.

B. doping the host crystal with accepter impurities.

C. pure crystals of germanium.

D. none of the given answers

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

17#

单选题搜藏此题

A p-type semiconductor is d *gv5a)z.f iaproduced by (1.0 分)

A. doping the host crystal with donor impurities.

B. doping the host crystal with accepter impurities.

C. pure crystals of germanium.

D. none of the given answers

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

18#

单选题搜藏此题

In a p-type semicondu7dn6xv1d 9 wuirl2 ;wcctor, a hole is (1.0 分)

A. a donor atom.

B. an extra electron supplied by a donor atom.

C. a missing atom in the crystalline structure.

D. a region where an electron is missing.

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

19#

单选题搜藏此题

When a voltage is applied across a p-type semic g.3 *: xh9xl*qj8x5lou io8:hnvezssonductor, the holes (1.0 分)

A. are destroyed.

B. move toward the positive electrode.

C. move toward the negative electrode.

D. do not move.

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

20#

单选题搜藏此题

If a battery is connected to a diode with the positive terminal( xw94paps ua+x;4wou to the p side and the negative terminal to the n side, then diode is sa;9 x(4w4+ oau ausxppwid to be (1.0 分)

A. forward biased.

B. reversed biased.

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

21#

单选题搜藏此题

A simple junction transistor consists of three semicon0 wb.5 ,shtjwpductor sections consisting owb5t,wp j0.h sf (1.0 分)

A. pnp semiconductors.

B. npn semiconductors.

C. either pnp or npn semiconductors.

D. none of the given answers

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

22#

单选题搜藏此题

A diatomic quantum mechanical oscillator haszfq9sh;:vn:2m+ ofbfij( 2 gj a moment of inertia of $7.73 \times 10^{-45} \; kg \cdot m^{2}$. What is the rotational energy in the quantum state characterized by L = 2? (1.0 分)

A. $2.27 \times 10^{-5} \; eV$

B. $2.72 \times 10^{-5} \; eV$

C. $7.22 \times 10^{-5} \; eV$

D. $8.71 \times 10^{-5} \; eV$

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

23#

单选题搜藏此题

A diatomic molecule ha) bj(gh85rl p u8nkw.hw )dz3bsx0u 5us $2.6 \times 10^{-5} \; eV$ of rotational energy in the L = 2 quantum state. What is the rotational energy in the L = 1 quantum state? (1.0 分)

A. $3.4 \times 10^{-6} \; eV$

B. $5.3 \times 10^{-6} \; eV$

C. $7.8 \times 10^{-6} \; eV$

D. $8.7 \times 10^{-6} \; eV$

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

24#

单选题搜藏此题

A diatomic molecule h-de/gykzubd,fn c + gi yt28 *ienj9,3as $18 \times 10^{-5} \; eV$ of rotational energy in the L = 2 quantum state. What is the rotational energy in the L = 0 quantum state? (1.0 分)

A. $9.0 \times 10^{-5} \; eV$

B. $6.0 \times 10^{-5} \; eV$

C. $3.0 \times 10^{-5} \; eV$

D. $0 \; eV$

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Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，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

25#

单选题搜藏此题

Estimate the rotational energy (in eV) for a diatomic hydrs( vd*.))q w,uhyzpip ogen molecule in the L = 2 quantum state. spv) d* zi,wyu)(h.pq (The equilibrium separation for the H2 molecule is 0.075 nm.) (1.0 分)

A. $0.011 \; eV$

B. $0.022 \; eV$

C. $0.033 \; eV$

D. $0.044 \; eV$

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

26#

单选题搜藏此题

A diatomic molecule is viber 5 ;fxqt* f.6dg4 eaf:zywgzc)(vc:rating in the v = 1 quantum state with a frequency of t*(v56)4wg :yc;eag zf:rzdqfcfxe.$2.0 \times 10^{13} \; Hz$. What is the energy of vibration? (1.0 分)

A. $0.041 \; eV$

B. $0.083 \; eV$

C. $0.12 \; eV$

D. $0.17 \; eV$

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Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，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

27#

单选题搜藏此题

The energy gap between the valence and cob fk,*k0q km.7 5 pi f/qo,jnvebs0qe,nduction bands in a certain semiconductor is 1.25 eV. es0qf,j0*qf/ ,on,kq kbmp5bk i.e v7What is the threshold wavelength for optical absorption in this substance? (1.0 分)

A. $599 \; nm$

B. $959 \; nm$

C. $873 \; nm$

D. $995 \; nm$

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Practice全部题目来源于WebAssign，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，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

答题人:

总分:27分及格:16.2分时间:不限时

未答题:

已答题:0

答错题:

当前Practice共有 27 道题

试卷内容到此结束! © 2024 WebAssign版权所有

Archiver|手机版|Jailroom|WebAssign

2024-5-19 07:05 GMT+8 , Processed in 0.093956 second(s), 67 queries , Redis On.

To Top