Physics

Physics, 04.10.2019 21:30, marquion

Aforce is path-dependent and will change an objects total mechanical energy

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Chemistry, 13.09.2019 22:30, jordonlewis

State whether each of the following are true or false. a thermodynamic property is always conserved. internal energy change is not dependent on choice of system. enthalpy change is path dependent. volume change is not path dependent. sum of heat and work is path dependent. reversible work is path dependent. temperature is constant for an ideal gas if internal energy is constant. temperature is constant for an ideal gas if entropy is constant. it is possible to convert work solely to heat in a cyclic process. there is no enthalpy change in a reversible adiabatic process. a process with no entropy change is always reversible. a reversible process produces the most work. entropy is destroyed in a system when there is lost work. entropy of a system can never decrease. entropy of the entire universe can never decrease.

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Physics, 09.10.2019 03:20, jjxt126

Which of the following statements is/are true? check all that apply. (a) the total mechanical energy of a system, at any one instant, is either all kinetic or all potential energy. (b) the total mechanical energy of a system is equally divided between kinetic and potential energy. (c) mechanical energy can be dissipated to nonmechanical forms of energy. (d) the total mechanical energy of a system is constant only if conservative forces act. (e) the total mechanical energy of a system is constant only if nonconservative forces act.

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Physics, 30.10.2019 07:31, EndiaGracee

1. a hockey puck sliding on a frictionless surface strikes a box at rest. after the collision, the two objects stick together and move at some final speed. which of the following describes the change in momentum and energy of the puck during the collision? a. the puck loses some, but not all, of its original momentum and mechanical energy.b. the puck conserves its original momentum and mechanical energy.c. one cannot determine if the momentum or energy of the puck is conserved without knowing the final velocities and masses of the two objects.d. the puck conserves its original momentum, but loses some, but not all, of its mechanical energy.e. the puck loses some momentum in the collision but conserves its mechanical energy.f. the puck conserves its original momentum but loses all of its mechanical . which of the following describes the change in momentum and energy of the combined puck and box during the collision? a. the system conserves its original momentum but loses all of its mechanical energy.b. one cannot determine if the momentum or energy of the system is conserved without knowing the final velocities and masses of the two objects.c. the system loses some, but not all, of its momentum and mechanical energy.d. the system conserves its original momentum and mechanical energy.e. the system conserves its original momentum, but loses some, but not all, of its mechanical energy.f. the system loses some momentum in the collision but conserves its mechanical energy.

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Aforce is path-dependent and will change an objects total mechanical energy...

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