发布时间:2023-11-21 17:33:55 编辑:小杨来源:犀牛国际教育
1. A car of mass 1200kg tows a caravan of mass 600kg.
The resistive forces acting on the car and caravan are
proportional to their individual weights and their sum equals 900N.
The vehicle accelerates at 2.0ms²on a flat road
(i) What force is exerted by the engine?
(ii) What is the tension in the tow bar?
(iii) What is the power being converted by the engine after 5s?
2. An object of mass m slides down
the smooth sloping
surface of a wedge of mass mz as shown in Fig.
The angle of the slope in θ=30°to
the horizontal,the wedge
sits on a smooth horizontal surface.
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想要申请国际名校理工学科专业,尤其是进英国G5和美国藤校,数学和物理竞赛一定是必备的学术能力证明,这里给大家盘点:往届录取牛剑G5的学员都参加了哪些物理竞赛?
可以看到,数理化生基本上已经成为背提标配,根据这张表,我们梳理出了含金量高的国际物理竞赛:
AP03-08
小托福04-03
美国留学04-05
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