[填空题]
What is the speed of an electron just before it hits a television,1vv42aa-mss 6 dtx* jduzk/s screen after bstssaj-v 4*6/, d1axvku m2dz 7a k j(kt07 dz8ufelutvn,:n5 n)s1f:yqdn1aeing accelerated from rest by tnan 0fuvtuq51 d)kl(7 aj tns7f1y,ezd:kn8:he 25,000 V of the picture tube? v = c
