Extra Problem Two children stretch a jump rope between them and send wave pulses back and forth on it. The rope 6(a) is 2.5 m long, its mass is 0.30 kg, and the force exerted on it by the children is 120 N. (1.5 points) What is the linear mass density of the rope (in kg/m)? (1.5 points) (ii). What is the speed of the waves on the rope (in m/'s)? If a proton were traveling the same speed as electrons in a TV picture tube (about 8.9 x 10' m/s), what (b). (2.0 points) would its de Broglie wavelength be? The mass of a proton is 1.67 x 10-27 kg. Periodic Table of the Elements 15 16 10 11 12 13 14 17 ABan Metal Narmetal He 1 H Atomic Alanine Earth Halogen Number H Noble Gut F Ne Li Symbol Transition Metal Be Hydrogen- - Num Abernic 1.008 Semimetal actinide CI Ar Na Br Kr Ca SC Ti Mn Fe CO Ni CU zn Ga b Mo Rh Pd Ag Ed In Sn sb Ke Zr 5 Hg Po At Rn Ba 57-71 Hf Ta Re 0S Pt Au Vit RC Cn Uutl' FI Uup Lv Uus Juo Hs D'S Ra 89-103 RF b Bh Pr Nd Pm Sm EL Ho Tm Yb LLI Garie LE Le Cm BK Cf Es Fm Md Lr Series Ac Th Pa Np Pu Am YOUNG REFINED