电子的静止质量m0,当电子以0.8c的速度运动时,它的动量p,动能Ek和能量E分别是()。
A: p=4m0c/3,EK=2m0c2/3,E=5m0c2/3
B: p=0.8m0c,EK=0.32m0c2,E=0.64m0c2
C: p=4m0c/3,EK=8m0c2/18,E=5m0c2/3
D: p=0.8m0c,EK=2m0c2/3,E=0.64m0c2
A: p=4m0c/3,EK=2m0c2/3,E=5m0c2/3
B: p=0.8m0c,EK=0.32m0c2,E=0.64m0c2
C: p=4m0c/3,EK=8m0c2/18,E=5m0c2/3
D: p=0.8m0c,EK=2m0c2/3,E=0.64m0c2
举一反三
- 矩阵[left[ {egin{array}{*{20}{c}} { m{0}}&{ m{0}}&{ m{5}}&{ m{2}}\ { m{0}}&{ m{0}}&{ m{2}}&{ m{1}}\ { m{4}}&{ m{2}}&{ m{0}}&{ m{0}}\ { m{1}}&{ m{1}}&{ m{0}}&{ m{0}} end{array}} ight]]的逆矩阵为 ( ) </p></p>
- 在下列六组量子数中,正确的是① n=3,l= 1,m=-1 ② n = 3,l= 0,m = 0③ n = 2,l= 2 ,m=-1 ④ n = 2, l = 1 ,m = 0 ⑤ n = 2,l = 0,m =-1 ⑥ n= 2,l = 3 , m= 2 A: (1),(2),(4) B: (2),(4),(6) C: (1),(2),(3) D: (1),(3),(5)
- 矩阵[left[ {egin{array}{*{20}{c}} {m{0}}&{m{0}}&{m{5}}&{m{2}}\ {m{0}}&{m{0}}&{m{2}}&{m{1}}\ {m{4}}&{m{2}}&{m{0}}&{m{0}}\ {m{1}}&{m{1}}&{m{0}}&{m{0}} end{array}} ight]]的逆矩阵为 ()
- 有六组量子数: (1) n=3,l=1,m=-1;(2) n=3,l=0,m=0;(3) n=2,l=2,m=-1;(4) n=2,l=1,m=0;(5) n=2,l=0,m=-1;(6) n=2,l=3,m=2 其中正确的是( )。 A: (1)(3)(5) B: (2)(4)(6) C: (1)(2)(4) D: (1)(2)(3)
- 下列各组量子数哪些是不合理的,为什么? (1) n=2,l=1,m=0; (2) n=2,l=2,m=-1; (3) n=3,l=0,m=0; (4) n=3,l=1,m=+1; (5) n=2,l=0,m=-1; (6) n=2,l=3,m=+2