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 is the separation between the two objects and α= 2.12×10⁻²⁶ n•m². assume that the uranium nucleus remains at rest. what is the speed of the proton when it is 8.00×10⁻¹⁰m from the the uranium nucleus?

Explain why you think this diagram shows what happened to the carbon in the biodome.

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)

Which of the following list the divisions of the geologic time scale in order from longest to shortest