The charge on a proton is a. negative, and the charge on an electron is positive. b. positive, and the charge on an electron is negative. c. the same as the charge on an electron. d. can change according to the situation. select the best answer from the choices provided a b c d

Hello!

Second options is correct answer.

Explanation: The charge on a proton is a "positive, and the charge on an electron is negative". Hope this helps! Thank you for posting your question at here on -Charlie

a.   mass number from atomic number

the tires are rotating at 0.434 rpmlinear speed=45 m/sdiameter=0.550 mradius=0.275 mnow v= rωω= v/rω=45/0.275ω=163.6 rad/sω=163.6 rad/s (1rev/2π rad) (60s/1m)ω=1563 rpm