Aproton with mass 1.67×10−27kg is propelled at an initial speed of 3.00×105m/s directly toward a uranium nucleus 5.00 m away. the proton is repelled by the uranium nucleus with a force of magnitude f=α/x2, where x is the separation between the two objects and α=2.12×10−26n⋅m2. assume that the uranium nucleus remains at rest. what is the speed of the protonwhen it is 8.00*10^-10m from the uranium nucleus?

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is