Physics Bowl物理碗真题资料分享 看答案拎思路

BPHO和物理碗是适合申请工程、物理专业小伙伴参加的2大高含金量赛事，鉴于BPHO在下半年还远得很，今天我们就先关注physicsbowl，跟着2018年的物理碗真题来练练手感吧。

（点击查看2022物理碗竞赛时间与含金量）

物理碗真题与答案精选

12.What is the equivalent resistance in the circuit that is shown at R,=100
right?

(A)55 Ω

(B)80Ω

(C)50Ω

(D)45Ω

(E)75 Ω

13.An x-ray photon collides with a free clectron, and the photon is scattered. During the collision:
(A) there is conservation ofmomentum but not energy
(B) there is conservation of neither momentum nor energy(C) there is conservation ofenergy but not momentum(D) there is conservation ofboth momentum and energy
(E) impossible to predict if momentum and energy are conserved without additional information

物理碗真题14.

Three identical wood blocks are raced across three different flat surfaces, with the faces of the
blocks on the surfaces. Each block is pulled horizontally with the same force F from one edge by a light string attached to the block. Block 1 is pulled on a frictionless surface. Block 2 is pulled on a
surface with a nonzero kinetice friction coefficient, and a zero static friction coefficient. Block 3 is
pulled on a surface with a nonzero static friction coefficient, and the same kinetic coefficient as for
Block 2, where < u. If each block starts from rest and is pulled until traveling the same fixed
horizontal distance, which of the following choices crrectly ranks the times (t, tz, t) it takes foreach block to traverse the distance?
(A)t1<t2<t3

(B)t1 =t2=t3

(C)t1 <t2=t3

(D)t3<t2<t1

(E)t2<t3<t1

参考答案

今日份物理碗真题就先练到这里，像这类知名度比较高的竞赛，往往有一个共同难度——答题速度。45分钟要完成40道题目确实是一个挑战，算算每道题只有1分钟07秒的时间。面对这样的高要求，如果感觉自己从头梳理有点没方向，欢迎点击预约试听【唯寻国际竞赛辅导班】——

根据学员进度定制课程

介绍联想、类比、归纳、转化、试误等答题技巧

整合大量竞赛全真题库

进行模块化学习

线下、线上、1对1、班课等多种班型都有哟

看完物理碗真题，你还可以读↓

2022BIO  USACN竞赛时间在几月？4月9日开考

上半年国际竞赛时间表