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question 9 please solve
uetcn and the mass to move downwad (a) Does the potential energy...
(i) Does an electron’s electric potential energy increase, decrease, or stay the same as it moves...
(i) Does an electron’s electric potential energy increase, decrease, or stay the same as it moves through a circuit? (ii) Does an electron’s kinetic energy increase, decrease, or stay the sams as it moves through a circuit?
Question 7 The potential energy of a particular mass-spring system is 10 J when the spring...
Question 7 The potential energy of a particular mass-spring system is 10 J when the spring is stretched by a distance of A What is the potential energy when the same mass-spring system when the spring is only stretched by a distance of A/2? Select the correct answer O 2.5J 7.5J 0 6.7 103 O 20 0 of 3 attempts used CHECK ANSWER E- 个
Two masses (5.3kg and 7.5kg) are fastened together with a small amount of explosive. They are...
Two masses (5.3kg and 7.5kg) are fastened together with a small amount of explosive. They are loaded into a spring gun that is tilted 60.0◦ above the horizontal and launched at a speed of 25m/s. At the top of the trajectory, the explosive detonates (assume the mass of explosive is negligble). After it detonates, the 5.3kg mass isn’t moving at all. What is the velocity of the second mass just after the explosion? How far apart are the masses when...
4. A mass of 2 kg is held 4 meters above the ground. The gravitational potential...
4. A mass of 2 kg is held 4 meters above the ground. The gravitational potential energy of this object, relative to the ground, is ___. 5. Which is easier, stopping a 1000 kg car traveling at 40 m / s or a 2000 kg car traveling at 20 m / s? 8. Suppose an airplane fires bullets in the same direction it travels. Does the momentum of the plane increase, decrease or remain the same? Explain
The first law of thermodynamics In thermal physics, we are often interested in the internal energy...
The first law of thermodynamics In thermal physics, we are often interested in the internal energy (E) of a system. The wo 41 internal energy of an ideal gas is proportional to the temperature and the number of moles of the gas. The internal energy can change when energy is exchanged with the system's environment (ie., objects that are outside the system of interest). The case above is one in which the internal energy of a gas changes due to...
Question 8 (Revision: Unit 9) - 5 marks A particle of mass 2 kg is attached...
Question 8 (Revision: Unit 9) - 5 marks A particle of mass 2 kg is attached to one end of a model spring that is hanging vertically from a fixed point 0. The spring has stiffness 4 Nm-1 and natural length 1 m. The system is oscillating in a vertical line with the particle below 0. In this question use the approximation that the magnitude of the acceleration due to gravity is 10 ms-2. Take the point O as the...
1- For a uniform electric field, how is the electric potential energy similar to the gravitational...
1- For a uniform electric field, how is the electric potential energy similar to the gravitational potential energy in a uniform gravitational? 2-If a positive charge and a negative charge moving the same way in an electric field have the same change in electric potential energy? 3-For a positive charge moving in an electric field, which direction of motion will cause the electric potential energy to increase? Decrease? Stay constant? 4-How would the answers to the previous question be different...
3. A student places a physics book on their outstretched palm. They then raise the book...
3. A student places a physics book on their outstretched palm. They then raise the book vertically upward at a constant speed. While the student is raising the book at constant speed, does the total energy of the book Earth system (kinetic plus potential) increase, decrease, or stay the same? Explain 4. An Awood machine consists of a light string draped over a low friction pulley, with a lighter mass (mi) attached to one end of the string and a...
1. 2. Question 10 1 pts The graphs show potential energy diagrams for the same reaction...
1.
2.
Question 10 1 pts The graphs show potential energy diagrams for the same reaction at T-900. K R P 1) uncatalysed process; 2) catalysed reaction Uncatalyzed Reaction 400 300 reactants 200 100 products Reaction coordinate Uncatalysed reaction: Potential Energy (P.E.) vs reaction coordinate. Energy is measured from O to 400. kJ, and the reaction coordinate is associated with the evolution of the reaction. The PE of the reactants is 225 kJ. Then the energy grows to 400. kJ,...
please help with ALL a-g thanks in advance:) HW 6.1. Briefly answer the following questions. a)...
please help with ALL a-g
thanks in advance:)
HW 6.1. Briefly answer the following questions. a) A clock is mounted on the wall. As you look at it, what is the direction of the angular velocity vector of the second hand? What is the value of the angular acceleration of the second hand? b) If the angular acceleration of a rigid body is zero, what is the functional form of the angular velocity? c) What if another planet the same...
Question 7 The potential energy of a particular mass-spring system is 10 J when the spring is stretched by a distance of A What is the potential energy when the same mass-spring system when the spring is only stretched by a distance of A/2? Select the correct answer O 2.5J 7.5J 0 6.7 103 O 20 0 of 3 attempts used CHECK ANSWER E- 个
The first law of thermodynamics In thermal physics, we are often interested in the internal energy (E) of a system. The wo 41 internal energy of an ideal gas is proportional to the temperature and the number of moles of the gas. The internal energy can change when energy is exchanged with the system's environment (ie., objects that are outside the system of interest). The case above is one in which the internal energy of a gas changes due to...
Question 8 (Revision: Unit 9) - 5 marks A particle of mass 2 kg is attached to one end of a model spring that is hanging vertically from a fixed point 0. The spring has stiffness 4 Nm-1 and natural length 1 m. The system is oscillating in a vertical line with the particle below 0. In this question use the approximation that the magnitude of the acceleration due to gravity is 10 ms-2. Take the point O as the...
3. A student places a physics book on their outstretched palm. They then raise the book vertically upward at a constant speed. While the student is raising the book at constant speed, does the total energy of the book Earth system (kinetic plus potential) increase, decrease, or stay the same? Explain 4. An Awood machine consists of a light string draped over a low friction pulley, with a lighter mass (mi) attached to one end of the string and a...
1.
2.
Question 10 1 pts The graphs show potential energy diagrams for the same reaction at T-900. K R P 1) uncatalysed process; 2) catalysed reaction Uncatalyzed Reaction 400 300 reactants 200 100 products Reaction coordinate Uncatalysed reaction: Potential Energy (P.E.) vs reaction coordinate. Energy is measured from O to 400. kJ, and the reaction coordinate is associated with the evolution of the reaction. The PE of the reactants is 225 kJ. Then the energy grows to 400. kJ,...
please help with ALL a-g
thanks in advance:)
HW 6.1. Briefly answer the following questions. a) A clock is mounted on the wall. As you look at it, what is the direction of the angular velocity vector of the second hand? What is the value of the angular acceleration of the second hand? b) If the angular acceleration of a rigid body is zero, what is the functional form of the angular velocity? c) What if another planet the same...
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