浙江省杭州市2018-2019学年高二下学期期末考试物理答案.pdf

2018 瀛﹀勾绗簩瀛︽湡鏉窞甯傞珮浜屽勾绾ф暀瀛﹁川閲忔娴 鐗╃悊璇曢鍙傝€冪瓟妗堝強璇勫垎鏍囧噯

涓€銆侀€夋嫨棰 锛堝叡10 灏忛锛屾瘡灏忛 4 鍒嗭紝鍏 40 鍒嗐€傛瘡灏忛鍒楀嚭鐨勫洓涓€夐」涓彧鏈変竴涓槸绗

鍚堥鐩姹傜殑锛屼笉閫夈€佸閫夈€侀敊閫夊潎涓嶅緱鍒嗭級

1C 2 D 3 C 4D 5C 6C 7 D 8 B 9C 10B

浜屻€佸疄楠岄锛堟瘡灏忛2 鍒嗭級

11 锛?锛塁E (2)蹇呴』涓嶅悓 (3) D (4)1.7 卤0.1N

12 锛?锛? 惟鎴?.5 惟锛? 锛夌數闃婚殢娓╁害鐨勫崌楂樿€屽澶э紝璁＄畻鐨勭粨鏋滄槸鍙戝厜鐢甸樆锛屾祴閲忕殑鏄

甯告俯鐨勭數闃 锛? 锛塁 锛? 锛? 娴嬮噺鏁版嵁鐨勭數鍘嬪垎甯冨お绐勶紙浣庡帇鍜岄珮鍘嬬殑鏁版嵁閮芥病鏈夛級锛? 閲

闆嗘暟鎹お闅忔剰锛屾病鏈夋寜鐓х數鍘嬪潎鍖€澧炲姞銆傚啓鍑哄叾浠栧悎鐞嗙殑鎰忚涔熷彲浠

涓夈€佽绠楅

13 锛?4 鍒嗭級 鍙傝€冪瓟妗 銆愮瓟妗堛€戯紙1锛?m/s 锛? 锛?.64m 锛? 锛変笉鑴辩杞ㄩ亾 0.32m 銆愯В鏋愩€戯紙1锛変粠A 鍒癇 杩囩▼鐢辩墰椤跨浜屽畾寰嬪緱 mgsin 胃-碌mgcos 胃=ma 1 鍒 2

娌挎枩闈㈠仛鍖€鍔犻€熺洿绾胯繍鍔 v =2aL 1 鍒 B 瑙ｅ緱v =4m/s 1 鍒 B 2 锛?锛夊垰濂借繃鍦嗚建閬撴渶楂樼偣鏃 mg 鈭扙q=m饊仯 1 鍒 饊亝 1 2 1 2

浠嶣 鐐瑰埌鍦嗚建閬撴渶楂樼偣鐢卞姩鑳藉畾鐞嗗緱 - 锛坢g-Eq锛夛紙2R锛堼 饊仛饊仯 - 饊仛饊仯饊€ 2 鍒 2 2 瑙ｅ緱R=0.64m 1 鍒 1 2