Homework Answers
28. Potential energy = mgh = 1 x 9.8 x 1 = 9.8 J. Answer
29 Does not depend on the path taken between A and B.
30. Yes, since the choice of the zero of potential energy is arbitrary.
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Question 28 1 pts What is the gravitational potential energy of a 1- kg block at...
Question 1 1 pts What is the kinetic energy of a man who weighs 980N who...
Question 1 1 pts What is the kinetic energy of a man who weighs 980N who is riding in a car traveling 40 km per hour? Express your answer in Joules, but don't type the unit in the answer box. Round to the nearest whole number. (Careful with the units) 1 pts Astudent slides her 80.0-kg desk across the level floor of her dormitory room a distance 4.00 m at constant speed. If the coefficient of kinetic friction between 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...
Work Done by the Govtational Force bute the gravitational force G m./r into the integral equation...
Work Done by the Govtational Force bute the gravitational force G m./r into the integral equation on the previous genith Y replacing and find the work done by this force df w is the work done by the gravitational for moves away from t he gravitational force positive, negative, or zero when an object in the Earth? When it moves toward the Earth? When it orbits the Earth in a circle? Part B: Conservative and Non-conservative Forces welop and understorence...
Sorry this problem has so many parts--thank you in advance for your effort. Conservative Forces It...
Sorry this problem has so many
parts--thank you in advance for your effort.
Conservative Forces It takes work to lift an object under the influence of the Earth's gravitational force. This increases the gravitational potential energy of the object. Lowering the ob- ject releases the gravitational potential energy that was stored when it was lifted. When you studied the gravitational force, you applied the term conservative to it because it allows the recovery of all of the stored energy. You...
Question 31 1 pts A 1.0-kg ball falls to the floor. When it is 0.70m above the floor, its potential energy exactly equa...
Question 31 1 pts A 1.0-kg ball falls to the floor. When it is 0.70m above the floor, its potential energy exactly equals its kinetic energy. How fast is it moving at this moment? 0 3.7 m/s 6.9 m/s 14m's 45m's Question 32 1 pts The more powerful the motor is, the: O longer the time interval for doing the work is shorter the time interval for doing the work is O greater the ability to do the work is...
1 pts Question 3 How much potential energy (J) does a 2000 kg car possess relative...
1 pts Question 3 How much potential energy (J) does a 2000 kg car possess relative to the floor of a garage when it is onta hydraulic lift 5 ft above the floor? 10,000 1x 10 3,000 3 X101
(a) What is the gravitational potential energy of a two-particle system with masses 9.4 kg and...
(a) What is the gravitational potential energy of a two-particle system with masses 9.4 kg and 7.9 kg, if they are separated by 2.4 m? If you triple the separation between the particles, how much work is done (b) by the gravitational force between the particles and (c) by you? (a) Number Enter your answer for part (a) in accordance to the question statement Units Choose the answer for part (a) from the menu in accordance to the question statement...
Question 4 1 pts You pick up a textbook, with a mass of 0.5 kg. You...
Question 4 1 pts You pick up a textbook, with a mass of 0.5 kg. You lift the book off your desk a distance of 0.5 m, carry it 5 m horizontally, and then place it on the floor. The top of your desk is 1 m above the floor. The total change in gravitational potential energy of the book and Earth is 4.9 0 -4.9 2.45 0-245/ 7.35 22.05J -22.05
Question 1 130 pts Jmincon function to find the minimum value of the potential energy PE of follo...
using matlab
Question 1 130 pts Jmincon function to find the minimum value of the potential energy PE of following system: where P 50 N, k1 2 N/m, k2 5 N/m, k3- 4 N/m. The displacement of the masses A and B shall meet the requirement of, ki Use x1 search. = 1, x2 = 1 as the initial point for k3
Question 1 130 pts Jmincon function to find the minimum value of the potential energy PE of following...
Question 1 (10 marks) (a) (4 marks) Recall that the gravitational potential energy for two masses...
Question 1 (10 marks) (a) (4 marks) Recall that the gravitational potential energy for two masses is Ug-GMm Use this fact to show that the virial theorem holds for a mass m, executing uniform circular motion about a much larger mass M (b) (3 marks) The potential energy of a collection of N particles each of mass m in a region with radius R can be written as Use this expression to derive a mass estimate for the virialized system...
Question 1 1 pts What is the kinetic energy of a man who weighs 980N who is riding in a car traveling 40 km per hour? Express your answer in Joules, but don't type the unit in the answer box. Round to the nearest whole number. (Careful with the units) 1 pts Astudent slides her 80.0-kg desk across the level floor of her dormitory room a distance 4.00 m at constant speed. If the coefficient of kinetic friction between the...
Work Done by the Govtational Force bute the gravitational force G m./r into the integral equation on the previous genith Y replacing and find the work done by this force df w is the work done by the gravitational for moves away from t he gravitational force positive, negative, or zero when an object in the Earth? When it moves toward the Earth? When it orbits the Earth in a circle? Part B: Conservative and Non-conservative Forces welop and understorence...
Sorry this problem has so many
parts--thank you in advance for your effort.
Conservative Forces It takes work to lift an object under the influence of the Earth's gravitational force. This increases the gravitational potential energy of the object. Lowering the ob- ject releases the gravitational potential energy that was stored when it was lifted. When you studied the gravitational force, you applied the term conservative to it because it allows the recovery of all of the stored energy. You...
Question 31 1 pts A 1.0-kg ball falls to the floor. When it is 0.70m above the floor, its potential energy exactly equals its kinetic energy. How fast is it moving at this moment? 0 3.7 m/s 6.9 m/s 14m's 45m's Question 32 1 pts The more powerful the motor is, the: O longer the time interval for doing the work is shorter the time interval for doing the work is O greater the ability to do the work is...
1 pts Question 3 How much potential energy (J) does a 2000 kg car possess relative to the floor of a garage when it is onta hydraulic lift 5 ft above the floor? 10,000 1x 10 3,000 3 X101
Question 4 1 pts You pick up a textbook, with a mass of 0.5 kg. You lift the book off your desk a distance of 0.5 m, carry it 5 m horizontally, and then place it on the floor. The top of your desk is 1 m above the floor. The total change in gravitational potential energy of the book and Earth is 4.9 0 -4.9 2.45 0-245/ 7.35 22.05J -22.05
using matlab
Question 1 130 pts Jmincon function to find the minimum value of the potential energy PE of following system: where P 50 N, k1 2 N/m, k2 5 N/m, k3- 4 N/m. The displacement of the masses A and B shall meet the requirement of, ki Use x1 search. = 1, x2 = 1 as the initial point for k3
Question 1 130 pts Jmincon function to find the minimum value of the potential energy PE of following...
Question 1 (10 marks) (a) (4 marks) Recall that the gravitational potential energy for two masses is Ug-GMm Use this fact to show that the virial theorem holds for a mass m, executing uniform circular motion about a much larger mass M (b) (3 marks) The potential energy of a collection of N particles each of mass m in a region with radius R can be written as Use this expression to derive a mass estimate for the virialized system...
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