Which element contains a full 2p orbital in its valence shell

Abody of weight 60 kg is standing in a lift the lift going upward with a uniform velocity of 4.9 metre per second slows down and stops in two seconds then apparent weight of the body during the slow down process is

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Determine the maximum r-value of the polar equation r =3+3 cos 0