Which of the following is true of the atom below: a) aluminum has 27 neutrons, because the atomic mass rounds to 27.b) aluminum has 14 neutrons, because the mass is the sum of protons and neutrons. c) aluminum has 13 neutrons, because the atomic number is 13

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

Rohit is trying to tune an instrument

Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)