Homework Answers
sum of kE and PE is conserved only when the net workdone by the resultant external force is zero, since there no additional loss in energy observed hence it remains conserved
option (c) is correct
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The sum of the kinetic and potential energies of a system of objects is conserved: only...
The energy of motion is called: Kinetic energy. potential energy, inertial energy. Power. In an inelastic...
The energy of motion is called: Kinetic energy. potential energy, inertial energy. Power. In an inelastic collision: momentum is conserved. kinetic energy is conserved, both (a) and (b). If the velocity of a moving object is doubled and its mass is cut in half, the kinetic energy of the object is; remains the same, doubled quadrupled, cut in half. When the net work done on an object is speed of the object is me on an object is zero; the...
1) The internal energy of a system A) is the sum of the kinetic energy of...
1) The internal energy of a system A) is the sum of the kinetic energy of all of its components B) is the sum of the rotational, vibrational, and translational energies of all of its components C) refers only to the energies of the nuclei of the atoms of the component molecules D) is the sum of the potential and kinetic energies of the components E) none of the above Answer:
When a system consisting of two colliding objects is not subject to a net external force,...
When a system consisting of two colliding objects is not subject to a net external force, which of the following statements is true? The total kinetic energy of the system is conserved. O The total potential energy of the system is conserved. The total velocity of the system is conserved. The total linear momentum of the system is conserved.
under what conditions is mechanical energy conserved? only when conservative forces are present Only when the...
under what conditions is mechanical energy conserved? only when conservative forces are present Only when the net talk on a system is zero only when the net force on the system is zero mechanical Everly is always conserved
Which combination of options is most accurate (A) Acceleration always means an object's speed is increasing...
Which combination of options is most accurate (A) Acceleration always means an object's speed is increasing or decreasing. (B) When the net force is perpendicular to momentum, the object will turn. (C) A projectile's time in the air is fully determined by its initial horizontal velocity. (D) Change in momentum is directed in the same direction as the net force. (E) None of the above Force and Energy Which combination of options is most accurate. (A) Equilibrium corresponds to when...
(b) Only the kinetic energy of the system s W (c) Only the momentum of the...
(b) Only the kinetic energy of the system s W (c) Only the momentum of the system is conserved Problems: Solve the problem and show your work. (No solution, no points). Please write ONLY ONE SOLUTION. Take g= 10 m/s' when appropriate P1. (4 Points) An object of mass 2.0 kg moves along the x-axis subjected to a single force F acting in the in the figure. If at t-1 the positive-x direction, whose magnitude as a function of time...
8 When an object experienices unicem cinsular motion, the direction of the net fonce is b....
8 When an object experienices unicem cinsular motion, the direction of the net fonce is b. in the opposite direction of the motion of the objoct d. is directed sway from the center of the ciculr path 9. Compared to its mass on the Farth, the mass of an object on the Moon is less b. more c the same d half as moch 10. Can work be done on a system if there is no motion? b. yes, since...
A)How many degrees of freedom are there in the system? (b) Using appropriately-defined generaliz...
a)How many degrees of freedom are there in the
system?
(b) Using appropriately-defined generalized coordinates, find the
kinetic and potential
energies of the system.
(c) Write down the mass–inertia matrix for the system, and find the
configurations for
which the Lagrangian is not regular.
(d) Find the equations of motion for the system
A light nextensible rod OA of length is attached to the point O and free to rotate smoothly around that point. At the other end of the...
Below are five descriptions of the kinetic and potential energy of objects. Which is a description...
Below are five descriptions of the kinetic and potential energy of objects. Which is a description of potential energy? water moving a waterwheel a skateboarder at the top of a halfpipe III. the blades of a fan turning IV. hot water molecules moving rapidly in a cup of tea V. a parachutist ready to jump out of a plane Select one: O a. I, III, and IV O b. II, III, and V O c. All of the above O...
А D z Problem 3. Work done by gravity and change in gravitational potential energy In...
А D z Problem 3. Work done by gravity and change in gravitational potential energy In problem the box was moving in a horizontal direction, and therefore no work was done by gravity. Here, we will analyze a situation where the force of gravity has some component that points along the direction of the displacement, and therefore there is non-zero work done by gravity on the system of interest Consider a box of mass 10 kg, initially at rest, which...
The energy of motion is called: Kinetic energy. potential energy, inertial energy. Power. In an inelastic collision: momentum is conserved. kinetic energy is conserved, both (a) and (b). If the velocity of a moving object is doubled and its mass is cut in half, the kinetic energy of the object is; remains the same, doubled quadrupled, cut in half. When the net work done on an object is speed of the object is me on an object is zero; the...
1) The internal energy of a system A) is the sum of the kinetic energy of all of its components B) is the sum of the rotational, vibrational, and translational energies of all of its components C) refers only to the energies of the nuclei of the atoms of the component molecules D) is the sum of the potential and kinetic energies of the components E) none of the above Answer:
When a system consisting of two colliding objects is not subject to a net external force, which of the following statements is true? The total kinetic energy of the system is conserved. O The total potential energy of the system is conserved. The total velocity of the system is conserved. The total linear momentum of the system is conserved.
Which combination of options is most accurate (A) Acceleration always means an object's speed is increasing or decreasing. (B) When the net force is perpendicular to momentum, the object will turn. (C) A projectile's time in the air is fully determined by its initial horizontal velocity. (D) Change in momentum is directed in the same direction as the net force. (E) None of the above Force and Energy Which combination of options is most accurate. (A) Equilibrium corresponds to when...
(b) Only the kinetic energy of the system s W (c) Only the momentum of the system is conserved Problems: Solve the problem and show your work. (No solution, no points). Please write ONLY ONE SOLUTION. Take g= 10 m/s' when appropriate P1. (4 Points) An object of mass 2.0 kg moves along the x-axis subjected to a single force F acting in the in the figure. If at t-1 the positive-x direction, whose magnitude as a function of time...
8 When an object experienices unicem cinsular motion, the direction of the net fonce is b. in the opposite direction of the motion of the objoct d. is directed sway from the center of the ciculr path 9. Compared to its mass on the Farth, the mass of an object on the Moon is less b. more c the same d half as moch 10. Can work be done on a system if there is no motion? b. yes, since...
a)How many degrees of freedom are there in the
system?
(b) Using appropriately-defined generalized coordinates, find the
kinetic and potential
energies of the system.
(c) Write down the mass–inertia matrix for the system, and find the
configurations for
which the Lagrangian is not regular.
(d) Find the equations of motion for the system
A light nextensible rod OA of length is attached to the point O and free to rotate smoothly around that point. At the other end of the...
Below are five descriptions of the kinetic and potential energy of objects. Which is a description of potential energy? water moving a waterwheel a skateboarder at the top of a halfpipe III. the blades of a fan turning IV. hot water molecules moving rapidly in a cup of tea V. a parachutist ready to jump out of a plane Select one: O a. I, III, and IV O b. II, III, and V O c. All of the above O...
А D z Problem 3. Work done by gravity and change in gravitational potential energy In problem the box was moving in a horizontal direction, and therefore no work was done by gravity. Here, we will analyze a situation where the force of gravity has some component that points along the direction of the displacement, and therefore there is non-zero work done by gravity on the system of interest Consider a box of mass 10 kg, initially at rest, which...
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