I carry a 1-kg book 3 m (about 10 feet) to the left. Did I change...
I carry a 1-kg book 3 m (about 10 feet) to the left. Did I change the potential energy of the book? A. Yes B. No C. Need more info
Homework Answers
(B) No
because Potential energy depends upon height (vertical displacement of an object) carrying a book towards left doesnt change its height or vertical position. So, Potential energy (PEgravitational = mgh) will be unchanged.
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I carry a 1-kg book 3 m (about 10 feet) to the left. Did I
change...
Please answer #2 and #3 Question 2 Two carts with m 1 kg collide and then...
Please answer #2 and #3
Question 2 Two carts with m 1 kg collide and then stick together. The collision is completely inelastic. 2m 5 m/s a. What is the total impulse applied to the left cart? b. What is the total impulse applied to the right cart? c. What is the total impulse applied to the system of both carts? d. What is the change in the kinetic energy of the left cart? What is the change in the...
Cel. 2. Carry at the a i m of the following How does this action change if the c repeathering can 3. Carry out the f...
Cel. 2. Carry at the a i m of the following How does this action change if the c repeathering can 3. Carry out the following
1-Dimensional INELASTIC Collision: A 1-kg mass traveling from left to right at 10.0 m/s hits and...
1-Dimensional INELASTIC Collision: A 1-kg mass traveling from left to right at 10.0 m/s hits and STICKS to a 6.00 kg mass that was travelling from right to left at 10.0 m/s. a) What is the final velocity (speed and direction) of the combined mass after the collision? b) How much KINETIC ENERGY has been LOST in this collision? c) Where did that lost energy go?
3. (10 points) Treat a stone of 10 kg and a water of 100 kg as...
3. (10 points) Treat a stone of 10 kg and a water of 100 kg as a system. Initially, the stone locates 10 m above the water, and the temperature of the stone and the water are same. Now, the stone falls toward the water. Determine total internal energy change, kinetic energy change, potential energy change, heat transfer, and work for each case with respect to the initial state. Treat g = 9.80665 m/s". a) at the moment just before...
A spacecraft of mass m = 1900 kg is moving on a circular orbit about the...
A spacecraft of mass m = 1900 kg is moving on a circular orbit about the earth at a constant speed v = 5.12 km/s. [Given: Mass of the earth M = 5.98 times 10^24 kg, radius of the earth R = 6.37 times10^6 m, gravitational constant G = 6.67 times 10^-11 N.m^2/kg^2.] a. Determine the radius r of the circular orbit. b. What is the period T of the orbit? c. The satellite, by firing its engines, moves to...
Two red blood cells each have a mass of 9.05 x 10-14 kg and carry a...
Two red blood cells each have a mass of 9.05 x 10-14 kg and carry a negative charge spread uniformly over their surfaces The repulsion arising from the excess charge prevents the cells from clumping together. One cell carries -2.10 pC and the other 2.60 pc, and each cell can be modeled as a sphere 3.75 × 10-6 m in radius. If the red blood cells start very far apart and move directly toward each other with the same speed,...
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
The free energy change for the following reaction at 25°C, when [Fe2+1 = 8.61*10' M and...
The free energy change for the following reaction at 25°C, when [Fe2+1 = 8.61*10' M and (Sn2t - 1.17 M. is 70.1 kJ Fe2+(8.61x10 3 M) + Sn(s) Fe(s) + Sn2+(1.17 M) AG = 70.1 kJ What is the cell potential for the reaction as written under these conditions? Answer: Would this reaction be spontaneous in the forward or the reverse direction? Submit Answer Retry Entire Group 3 more group attempts remaining The free energy change for the following reaction...
need help on all parts (10%) Problem 6: A book with mass m=225 kg rests on...
need help on all parts
(10%) Problem 6: A book with mass m=225 kg rests on the top of a counter. The coefficient of static friction between the book and the counter is , 0.75 and the coefficient of kinetic friction is 0.42. m Ctheexpertta.com T 25% Part (a) Write an expression for Fm the minimum force required to produce movement of the book on the top of the counter. 25% Part (b) Solve numerically for the magnitude of the...
1. E (a) Calculate is the change in PE when an electron moves through an electric...
1. E (a) Calculate is the change in PE when an electron moves through an electric field, E = 40 N/C, directed to the right a distance of 5 m to the left. Potential Energy, APE (b) is mechanical energy of the electron conserved during the motion? O Yes O No (c) If the electron starts from rest what is its speed, Vy, after traveling 5 m? The mass of the electron is m = 9.1 x 10-3kg. m/s
Please answer #2 and #3
Question 2 Two carts with m 1 kg collide and then stick together. The collision is completely inelastic. 2m 5 m/s a. What is the total impulse applied to the left cart? b. What is the total impulse applied to the right cart? c. What is the total impulse applied to the system of both carts? d. What is the change in the kinetic energy of the left cart? What is the change in the...
Cel. 2. Carry at the a i m of the following How does this action change if the c repeathering can 3. Carry out the following
3. (10 points) Treat a stone of 10 kg and a water of 100 kg as a system. Initially, the stone locates 10 m above the water, and the temperature of the stone and the water are same. Now, the stone falls toward the water. Determine total internal energy change, kinetic energy change, potential energy change, heat transfer, and work for each case with respect to the initial state. Treat g = 9.80665 m/s". a) at the moment just before...
A spacecraft of mass m = 1900 kg is moving on a circular orbit about the earth at a constant speed v = 5.12 km/s. [Given: Mass of the earth M = 5.98 times 10^24 kg, radius of the earth R = 6.37 times10^6 m, gravitational constant G = 6.67 times 10^-11 N.m^2/kg^2.] a. Determine the radius r of the circular orbit. b. What is the period T of the orbit? c. The satellite, by firing its engines, moves to...
Two red blood cells each have a mass of 9.05 x 10-14 kg and carry a negative charge spread uniformly over their surfaces The repulsion arising from the excess charge prevents the cells from clumping together. One cell carries -2.10 pC and the other 2.60 pc, and each cell can be modeled as a sphere 3.75 × 10-6 m in radius. If the red blood cells start very far apart and move directly toward each other with the same speed,...
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
The free energy change for the following reaction at 25°C, when [Fe2+1 = 8.61*10' M and (Sn2t - 1.17 M. is 70.1 kJ Fe2+(8.61x10 3 M) + Sn(s) Fe(s) + Sn2+(1.17 M) AG = 70.1 kJ What is the cell potential for the reaction as written under these conditions? Answer: Would this reaction be spontaneous in the forward or the reverse direction? Submit Answer Retry Entire Group 3 more group attempts remaining The free energy change for the following reaction...
need help on all parts
(10%) Problem 6: A book with mass m=225 kg rests on the top of a counter. The coefficient of static friction between the book and the counter is , 0.75 and the coefficient of kinetic friction is 0.42. m Ctheexpertta.com T 25% Part (a) Write an expression for Fm the minimum force required to produce movement of the book on the top of the counter. 25% Part (b) Solve numerically for the magnitude of the...
1. E (a) Calculate is the change in PE when an electron moves through an electric field, E = 40 N/C, directed to the right a distance of 5 m to the left. Potential Energy, APE (b) is mechanical energy of the electron conserved during the motion? O Yes O No (c) If the electron starts from rest what is its speed, Vy, after traveling 5 m? The mass of the electron is m = 9.1 x 10-3kg. m/s
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