What is the moment of inertia of this molecule with respect to an axis passing through the midpoint and perpendicular to the molecular axis? Express your answer with the appropriate units. HÀ ? I= Value Units Submit Request Answer Part B Consider air at 1 atm pressure and 20.0° C temperature. Suppose two nitrogen molecules with rms speeds vị have an elastic collision such that only one nitrogen atom in one molecule collides with one nitrogen atom in the other molecule in the manner depicted in the figure. Write an equation for the conservation of energy, in terms of r, vi, vf, and w, where vf and w are, respectively, the center-of-mass speed and the angular speed of either molecule after the collision. Express the right side of the equation for the conservation of energy in terms of vf, r, and w. ? Submit Request Answer Part C Write an equation for the conservation of angular momentum, in terms of r, vi, vf, and w, where vf and w are, respectively, the center-of-mass speed and the angular speed of either molecule after the collision. Express the right side of the equation for the conservation of angular momentum in terms of vr, r, and w. ΑΣφ ? V; = Submit Request Answer

A 41 g marble moving at 2.0 m/s strikes a 23 g marble at rest. Assume the collision is perfectly elastic and the marbles collide head-on. Part A What is the speed of the first marble immediately after the collision? Express your answer with the appropriate units.

A 0.060-kgkg tennis ball, moving with a speed of 5.80 m/sm/s , has a head-on collision with a 0.090-kgkg ball initially moving in the same direction at a speed of 3.48 m/sm/s . Assume that the collision is perfectly elastic.     Part A Determine the speed of the 0.060-kgkg ball after the collision. Express your answer to two significant figures and include the appropriate units.

A spring with relaxed length 0.30 m and spring constant 1.8 N/m rests horizontally on a frictionless table and is anchored frmly to a wall on one side. You press a 400 g block into the other side until the spring length is 0.16 m and then let go.   a.) What will the momentum of the block be when it departs from the spring? (Assume contact ceases when the spring is relaxed.)   b.) If the table were no longer frictionless and the block-table interface had a kinetic coeffcient of friction of 0.1 what then would the momentum of the block be when it departs from the spring?

Experiment 1. Before the experiment, the total momentum of the system is 0.4 kg m/s to the left. After the experiment, the total momentum of the system is 0.4 kg m/s to the right. A This describes an elastic collision (and it could NOT be inelastic). B This describes an inelastic collision (and it could NOT be elastic). C This is NEITHER an elastic collision nor an inelastic collision D This describes a collision that is EITHER elastic or inelastic, but more information is required to determine which.

A ball of mass 0.584 kg moving east (+x direction) with a speed of 3.78 m/s collides head-on with a 0.292 kg ball at rest. Assume that the collision is perfectly elastic. Part A What is be the speed of the 0.584-kg ball after the collision? Express your answer to three significant figures and include the appropriate units. V1 = 1.26 Submit m S Previous Answers

A 22-g bullet traveling 280 m/s penetrates a 1.8 kg block of wood and emerges going 120 m/s. Part A If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges? Express your answer to two significant figures and include the appropriate units. ? v3 = Value Units

Two atoms collide while moving in a dilute gas. The larger atom has a mass M₁ = 6 Daltons and a speed v₁ = 200 m/s, while the smaller has a mass M2 = 1 Daltons. During the collision both atoms simply bounce off each other. They do not change their speeds, but after the collision they each change their directions, bouncing in the indicated directions. Gravity can be ignored during the collision. A. What is the direction of the change in the momentum of the smaller atom? Use the letters from the compass rose below the figure to specify directions. B. Which of the following statements are true about the momenta of the two atoms? 1. The change in the momentum of M2 has the same magnitude as the change in momentum of M1. 2. The total change in the momentum of M1 and M2 must be zero. 3. The total momentum of M1 and M2 must be 0. 4. Because the angles are not the same, the collision cannot take place as described. C. What is the magnitude of the change in momentum of M₂? M₁ M₂ G F 90° E E B K

A 75.0 kg ice skater moving at 8.50 m/s crashes into a stationary skater of equal mass. After the collision, the two skaters move as a unit at 4.25 m/s. If the impact time is 0.140 s, what are the magnitudes of the average forces experienced by each skater during the collision? Force experienced by moving skater Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. N Force experienced by stationary skater Suppose the average force a skater can experience without breaking a bone is 4500 N. Does a bone break? Yes No

A 20 g ball is fired horizontally with initial speed toward a 110 g ball that is hanging motionless from a 1.1-m-long string. The balls undergo a head-on, perfectly elastic collision, after which the 110 g ball swings out to a maximum angle max = 52° Part A What was vo? Express your answer with the appropriate units. ▸ View Available Hint(s) Vo = Submit μÅ Value Units wp ?