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九年物理第三次月考试?功和机械能、热和能、能源与可持续发展C? - 百度文库

ʱ䣺 ղ ҪͶ

ڶ¿⣨ͻеܡȺܡԴɳչ

C

ʱ5070ֳɼ 1 2 3 4 5 6

һѡ⣨ÿ 2ֹ12֣

1 ˵ķڲͣ޹˶ AˮӸߴʹ B

伸첻ɨͻһҳ

Cڿеһʱ DһˮмΣˮ

2 ܼС A׷л B еʳ¶Ƚ

C һ0Cıȫۻ 0Cˮ D ۡŷɴزս

3 ճУıܵķͬ Aг̥Ͳ B ̫ˮеˮ¶ Cȼıڿն

D

ˮʱˮǶ 4 ߴʤָɽԽߣԽͣĽʹ Aɽɭïܣʯ࣬ȴ¶ȱ仯С BɽĿƽϡɾ͸̫ Cɽٴ󣬼ɽˮߴ DȿͶɽܼ 5 Դʶȷ AȻԴغģݽ

B̫ơꡢ

CȻԳΪṩúʯ͡ȻȿԴ Dҵĺ˷Ӧᷢǿҵıը޷ú 6ͼΪȼͼȼ ЧʿɱʾΪ

An =[ E1+E2+E3+E4 /E] X 100% Bn =[++/E] X 100% Cn = E2/E X 100% Dn = E1/E X 100%

⣨ÿ1ֹ18֣

7 ٻʢŻ㣬һ С

ʵз֣λ࿿ˮԶĻ۳һΣˮ ֮

________________

8 죬ΪʹůͣôֻķʽǷֱ _________ ________ ıܡ 9 Ϊ2kgˮ̫£¶ 5C,ˮյ

Ϊ J ʹͬúͬ¶ȣ __________________ յ

϶࣬Ϊ __________

10 ˶Աڻʱ»ˮ㣬һˮ󻬵 áУˮֵԭ _________________________________ 11 ľص;Ÿʡ յϺܼȻ 1.2 X 1010miЩȻȫ

ȼշų J ܵȻܶΪ

6kg/m3,ֵΪ

0.83 X 107J/kg

12 иԴAȻBˮCʯDEF

G̫HϫܡڲԴ ___________________ ; ڶԴ ________________ ;ڻʯԴ ______________________

13תתƾ ____________ Ȼغģܱ õԴ޵ģ˽ԼԴÿ˵Ρ

14 һְ 80 NĻᵽ5 mߴ ͼ3ʾõ 50 Nôù _____________ Jܹ ____________ ֵĻе Ч _______________

15 ıܵķʽȴ.

Һ¯ Ч Һÿƿ Һֵ ¯õ磩 Ч ѹ  90 % 220V 1kW 50% 15kg 3.54 X 10 7J/kg 70Ԫ/ƿ Һ۸ е۸ 0.5Ԫ/ ͻѹУѹȼϻʹ¶

ߣͨ ___________ ʽȼϻ?Ϊ˲ò ڹʱ¶̫ߣʱһˮףױ

ˮΧţͿͨ _______________ ķʽ׵¶ȣ ׵ܣ.

⣨10֣

16Һ¯Ŀǰձʹõ¯ߣ¯һ ¯ߣΪrȽǵĺܷãСʤ˵飬óݣ ʣ1Сʤһ൱ڰ

3

3 ͨ㣬Ϊʹ¯ߺܷø͡ ġ⣨6֣

17Сסģӳ ̫ȶס⼤ ̽²ԭ.ij 죬ȫͬѧֱѡ ĵص㣬ͬһʱ̲ Ե£Դ˻Ƴͼ ʾġһ¶ȡͼ.

;µ͵Ҫԭ

1ͼ͵_

2һֽĻµİ취:

50kgˮ40C100 C,

һĶ 2 ĵٶ

cˮ=4.2 X 10 J/kg C

¯ṩ

Һ¯ṩȼ

նǧ˵Һ1=3. 6X 106J

九年物理第三次月考试?功和机械能、热和能、能源与可持续发展C? - 百度文库

ڶ¿⣨ͻеܡȺܡԴɳչCʱ5070ֳɼ123456һѡ⣨ÿ2ֹ12֣1˵ķڲͣ޹˶AˮӸߴʹB伸첻ɨͻһ
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