Important changes in the musculoskeletal system due to physical activity seem to begin at minutes of activity a week. a. 30 b. 60 c. 80 d. 90

Which transition by an electron will release the greatest amount of energy? oa ob oc od

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.