A proton traveling at 23.0° with respect to the di-rection of a magnetic field of strength 2.60 mT experiences a mag-netic force of 6.50 $ 10 %17 N. Calculate (a) the proton’s speed and(b) its kinetic energy in electron-volts

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.