【正文】
( 2)某用已調(diào)好的托盤天平在測量物體質(zhì)量,出現(xiàn)了如下的情景,其中錯(cuò)誤的操作是: a) __________________________________ b) __________________________________ 左盤放了砝碼,右盤放了被測物體 被測物體放在天平上后,調(diào)節(jié)平衡螺母了 0 4 3 2 1 5g 20g 5g 則獎(jiǎng)牌的質(zhì)量為 _______ 28g ( 3)如圖為用天平測物體質(zhì)量時(shí)所加砝碼和游碼位置。 謝謝觀看 /歡迎下載 BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH