Calculate the proton's initial kinetic energy express your answer with the appropriate units. constants an infinitely long line of charge has linear charge density 4.00x10-12 c/m aproton (mass 1.67x 10 2 kg, charge +1.60x 10 toward the line at 2.90x103 m/s k 7.02x10-21 j c) is 18.0 cm from the line and moving directly submit previous answers correct part b how close does the proton get to the line of charge? express your answer with the appropriate units. ? d= 0.1199 m

Abatter hits the baseball a with an initial velocity of v0 = 110 ft/sec directly toward fielder b at an angle of 23° to the horizontal; the initial position of the ball is 2.2 ft above ground level. fielder b requires 0.44 sec to judge where the ball should be caught and begins moving to that position with constant speed. because of great experience, fielder b chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. the catch position is the field location at which the ball altitude is 8.4 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.

Protons and neutrons are found within the nucleus of an atom

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.