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De thi dai hoc nam 2015 lan 2 mon vat li cua Nhat Ban De thi dai hoc nam 2015 lan 2 mon vat li cua Nhat Ban De thi dai hoc nam 2015 lan 2 mon vat li cua Nhat Ban De thi dai hoc nam 2015 lan 2 mon vat li cua Nhat Ban De thi dai hoc nam 2015 lan 2 mon vat li cua Nhat Ban De thi dai hoc nam 2015 lan 2 mon vat li cua Nhat Ban
A B C D E (acceleration due to gravity) A A C L AB F g B B B 2L θ tan θ 1 2 B 12s 12s 36m m/s 1.0 2.0 3.0 4.0 5.0 6.0 m/s C ABC ∠ABC B AC B AC 45◦ h v AB C v √ gh √ 2gh √ gh √ 2gh √ gh D m d 3d 4 √ gd √ 2gd √ 3gd √ gd √ 5gd E m m A B v A A A A A B A 1v √ v v √ 2v F r 120◦ v v v0 v0 √ √ 3gr 7gr √ gr √ gr √ 5gr A( 1) B( 1.0×102 g A B A 2) C( 3) 3.0×103 J 1.5×101 K 4.0 × 103 J 3.0 × 10 g 1.0 × 101 K 4.0 × 102 g 1.0 × 10 J B 1.0×102 g A A B t[K] t[K] 1.0 2.0 3.0 4.0 5.0 6.0 K B A NA A √ mB VA mA √ vA B A B B NB VB vB √ VA VB √ vA vB VA VB √ vA √ vB NA NB √ mA mB NA NB √ mB mA NB NA √ mA mB NB NA √ mB mA C n p V0 2p0 2V0 A V B A V0 p0 B B C p0 CV A T0 Cp C R C −nRT0 −nCV T0 −nCp T0 −n(CV + Cp )T0 nRT0 nCV T0 nCp T0 n(CV + Cp )T0 A( 1) B( A 2) C( 3) AB I ◦ AB 60 I II II I ◦ II 45 I vI II vII vI vII 10 √ 2 √ √ 6 10 √ B S1 S1 12m S2 S2 5.0m 13m P S1 S2 340m/s S1 S2 500Hz P Hz 11 Hz 510 680 850 11 1020 C S0 d S1 S2 ℓ a ′ a a O d S1 x S2 P 1.5d d S1 S1 P S2 S2 P xd ℓ a′ a 12 0.33 0.67 1.5 12 3.0 A( A 1) B( 2) C( ABCD AD a A AB 3) D( √ 4) E( 5) F( q(> 0) 6) −8q B 3a C VC D VD k VD − VC 13 − 11kq 2a 5kq 2a − 9kq 2a − 7kq 2a 7kq 2a 9kq 2a 13 − 5kq 2a 11kq 2a B A B εr A A QA A EA B B A B QB B EB QB QA EB EA 14 QB QA 1 εr εr εr EB EA εr εr εr εr 14 C R V A I I 15 V 5R 2V 5R 3V 5R 15 4V 5R V R D A B O IB A B 3r O A B IA r B IB IB IA 16 − 3π − 3π − 6π 6π 3π 3π 16 E PQR I PQR B PQ QR PQR ℓ a d 17 √ 2IBℓ a √ 2IBℓ b √ 2IBℓ c √ 2IBℓ d 17 2IBℓ 2IBℓ 2IBℓ 2IBℓ a b c d F B R ab v a b 18 a a b a a b b a b a b a a b a b b a a 18 b b b A( A 1) n En = − n=4 2.2 × 10−18 J n2 n=2 m 6.6 × 10 −34 J·s 3.0 × 108 m/s 19 m 1.6 × 10−7 2.4 × 10−7 3.2 × 10−7 4.8 × 10−7 6.4 × 10−7 7.2 × 10−7 19 ... √ 2 √ √ 6 10 √ B S1 S1 12m S2 S2 5.0m 13m P S1 S2 340m/s S1 S2 500Hz P Hz 11 Hz 510 680 850 11 1 020 C S0 d S1 S2 ℓ a ′ a a O d S1 x S2 P 1.5d d S1 S1 P S2 S2 P xd ℓ a′ a 12 0.33 0.67 1.5 12 3.0... 1.5 12 3.0 A( A 1) B( 2) C( ABCD AD a A AB 3) D( √ 4) E( 5) F( q(> 0) 6) −8q B 3a C VC D VD k VD − VC 13 − 11kq 2a 5kq 2a − 9kq 2a − 7kq 2a 7kq 2a 9kq 2a 13 − 5kq 2a 11kq 2a B A B εr A A QA A... V 5R 2V 5R 3V 5R 15 4V 5R V R D A B O IB A B 3r O A B IA r B IB IB IA 16 − 3π − 3π − 6π 6π 3π 3π 16 E PQR I PQR B PQ QR PQR ℓ a d 17 √ 2IBℓ a √ 2IBℓ b √ 2IBℓ c √ 2IBℓ d 17 2IBℓ 2IBℓ 2IBℓ 2IBℓ