题干

如图甲所示,一个弹簧一端固定在传感器上,传感器与电脑相连,当对弹簧施加变化的作用力(拉力或压力)时,在电脑上得到了弹簧形变量与弹簧产生的弹力大小的关系图象(如图乙)。则下列判断正确的是(  )

A:弹簧产生的弹力和弹簧的长度成正比

B:在弹性范围内,弹簧长度的增加量与对应的弹力增加量成正比

C:该弹簧的劲度系数是200 N/m

D:该弹簧受到反向压力时,劲度系数不变

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答案(点此获取答案解析)

B,C,D

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    Located in the inner London Borough of Southwark, this hugely improved non-selective Secondary Academy School is looking to recruit (招募) and appoint a talented Science Teacher in April 2016 or sooner.

POSITION:Science Teacher |KS3 —5| All Science specialists are welcomed

DEPARTMENT:Popular & Ambitious Science Department

LOCATION:Borough of Southwark —Zone 2 —Inner London

PERSON:Qualified Science Teacher required —experience in UK

START DATE:April 2016 or sooner —full time & permanent contract on offer

SALARY:Inner London Pay Scale —£29,270 ~ £37,862 a year

PERSON REQUIREMENT:

    All applicants will need to be suitably skilled, trained and qualified to be considered for this Science Teacher position. Applicants should feel confident across Key Stage 3, 4 and 5, in addition to having a real desire to make a difference and provide pupils under their care with a first class education.

    SCHOOL & TRAVEL INFORMATION:

    This is a typically diverse inner city school, suitable for a broad range of pupils aged 11 to 18 years old. The school has made huge steps and progressed from a satisfactory to a good school. Results are constantly improving, thanks to the staff in place, who are responsible for creating and delivering a broad curriculum. The school site is a short walk away from the nearest underground and rail stations, positioned within inner London, Zone 2. Those living in South and Central London are perfectly positioned for this position.

    If you are a hardworking Science Teacher, hoping to become part of an improving Inner London Secondary, get in touch today. Please apply and submit your up-to-date CV using the form. One of the Clarus Education Team will be in touch within 48 hours if shortlisted(入围).