2017word,.docx

2017

161.524.

12017

ABCD

22017

ABCD

32017

ABCD

42017

ABCD

52017

A100gB2kWC80D

62017

ABCD

72017

ABCD

82017

ABCD

92017

A BC D

102017

ABCD

1120175kg80%

ABCD

122017

ABCD

132017

AB

CD

142017

AB 1234.5JCD

152017

ABCD

16201720 1APa0.3APb0.5A

AR130B15VC1minR1450JDR17.5W

14

172017

(1)AB2sAB________cm________m/s

(2) ________________g________Ng=10N/kg________N

________

kg/m3

11.3103

8.9103

7.9103

2.7103

(3)13VR15 ________V

I/A

0.1

0.2

0.3

0.4

U/V

0.5

1.0

2.0

2VCDR1510________2V________ABR1 2________V________A________________

1820174kg1kgF5s0.5mg=10N/kg

(1)F

(2)W

(3)P

(4)

192017R1R2m6V

(1)R2________

(2)I1=0.01AR1

(3)I2=0.02A

202017

(1) 3

________

________

________

________

________

________

(2) ________________________

2017

161.524.

1D AA BBCCDDD1234

2B AufA B2fufBCCDDBu2f2fufuf

3B AABBCCDDB

4D AA BBCCDQ=cmtDD1234Q=cmt

5A A100g100gAB0.7AP=UI=220V0.7A150WBC374080CD3108m/s340m/sDA

6C AAB0BCCDDC1234340m/s3108m/s

7A AA BBCCDDA1234

8A AABBCCDDA

9C ABCD2C

10A AABBCCDDA

11B AABp= BCCDDB12p= 34

12C AABBCCDDC

13A AABDBDCCA

14D AAB 1234.5kWhBCCDDD12kwh34

15C ACAC BDBDC

16D R1R21a I= U=IaR1+R2=0.3AR1+20bR1U=IbR1=0.5AR1 0.3AR1+20=0.5AR1 R1=30AU=IbR1=0.5A30=15VB2b1minR1Q1=Ib2R1t=0.5A23060s=450JCaR1P1=Ia2R1=0.3A230=2.7WDDR1R21abR1R12bQ=I2Rt1minR1aR1P=I2R

14

17180.00.422702.71.731.5B2.00.54 11cm ABs=90.0cm10.0cm=80.0cm=0.800mt=2sv= = =0.4m/s80.00.42200g+50g+20g=270g72gG=mg=0.27kg10N/kg=2.7NF=1.7NF=GF=2.7N1.7N=1NF=gVV=V= = =1104m3 = = =2.7103kg/m3 2702.71.731.5V5102VB203V0.1V2.0V00.6A0.02A0.5ARR= = =41.5B2.00.541BA2G=mg3R=

181n=4 G=mg=4kg+1kg10N/kg=50NF= G= 50N=12.5NF12.5N2s=4h=40.5m=2m W=Fs=12.5N2m=25J25J3P= = =5W 5W4W=Gh=mgh=4kg10N/kg0.5m=20J = = 100%=80%80% 1G=mgn=4F= G2s=4hW=Fs3P= 4W=Gh

1915002I1=0.01A I= R= = =600R1R1=RR2=600500=100I1=0.01AR11003I2=0.02A R'= = =300R2R2'=R'R1=300100=200600gI2=0.02A600g 10R2500 12R13R2

2012 1

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