在用游標(biāo)為20分度的游標(biāo)卡尺測(cè)某金屬管的內(nèi)徑時(shí),示數(shù)如圖甲所示,讀數(shù)為           cm.在測(cè)定金屬絲的電阻率的實(shí)驗(yàn)中,用螺旋測(cè)微器測(cè)量金屬絲的直徑,示數(shù)如圖乙所示,讀數(shù)為                  mm.

                         

                                                                                                                                  

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:高中物理 來(lái)源: 題型:


一定質(zhì)量的理想氣體從狀態(tài)A變化到狀態(tài)B再變化到狀態(tài)C,其狀態(tài)變化過(guò)程的p﹣V圖象如圖所示.已知該氣體在狀態(tài)A時(shí)的溫度為27℃.則:                                                                                               

①該氣體在狀態(tài)B.C時(shí)的溫度分別為多少℃?                                                          

②該氣體從狀態(tài)A到狀態(tài)C的過(guò)程中是吸熱,還是放熱?傳遞的熱量是多少?                    

                                                                                         

                                                                                                                                  

查看答案和解析>>

科目:高中物理 來(lái)源: 題型:


如圖電路中,當(dāng)滑動(dòng)變阻器滑動(dòng)鍵P向下移動(dòng)時(shí),則(                          )                   

                                                                                              

    A. A燈變亮、B燈變亮、C燈變亮  B.  A燈變亮、B燈變亮、C燈變暗

    C. A燈變亮、B燈變暗、C燈變暗  D. A燈變亮、B燈變暗、C燈變亮

                                                                                                                                    

查看答案和解析>>

科目:高中物理 來(lái)源: 題型:


太陽(yáng)光進(jìn)入三棱鏡后發(fā)生色散的情形如圖所示.下列說(shuō)法正確的是( )                      

                                                                                                   

    A.  屏上d處是紫光

    B.  屏上d處是紅光

    C.  垂直穿過(guò)同一平板玻璃,d處光所用的時(shí)間比a出光長(zhǎng)

    D.  從同種介質(zhì)射入真空發(fā)生全反射時(shí),d處光的臨界角比a處光小

                                                                                                                                  

查看答案和解析>>

科目:高中物理 來(lái)源: 題型:


如圖所示的電路中,A1和A2是完全相同的燈泡,線圈L的電阻可以忽略,下列說(shuō)法中正確的是(   )                 

                                                                                                    

    A.  合上開(kāi)關(guān)S接通電路時(shí),A1先亮A2后亮,最后一樣亮

    B.  合上開(kāi)關(guān)S接通電路時(shí),A1和A2始終一樣亮

    C.  斷開(kāi)開(kāi)關(guān)S切斷電路時(shí),A1和A2都要過(guò)一會(huì)兒才熄滅

    D.  斷開(kāi)開(kāi)關(guān)S切斷電路時(shí),A2立刻熄滅,A1過(guò)一會(huì)熄滅

                                                                                                                                   

查看答案和解析>>

同步練習(xí)冊(cè)答案