Concept explainers
In the scattering experiment of Prob. 14.26, it is known that the alpha particle is projected from,
Want to see the full answer?
Check out a sample textbook solutionChapter 14 Solutions
Vector Mechanics For Engineers
- A 3 kg particle is moving with an initial velocity of 20 m/s to the right when it explodes into two fragments. Immediately after the explosion, which occurs at the origin of the coordinate system, the velocity of fragment A is observed to be 60 m/s and the fragments are traveling in the direction shown. Answer: A) what is the mass of fragment A; B) what is the speed of fragment B. MA VA : 60 m/sEC 45° Vo = 20m/s m: 3 Kgarrow_forwardPart A Ball A has a mass of 3 kg and is moving with a velocity of (vA)ı = 8 m/s when it makes a direct collision with ball B, which has a mass of 2.5 kg and is moving with a velocity of (vB)1 = 5 m/s. Suppose that e = 0.8. Neglect the size of the balls. (Figure 1) Determine the velocity of A just after the collision measured to the right. Express your answer to three significant figures and include the appropriate units. Enter positive value if the velocity is directed to the right and negative value if the velocity is directed to the left. HA ? (va)2 = Value Units Submit Request Answer Figure < 1 of 1 Part B Determine the velocity of B just after the collision measured to the right. Express your answer to three significant figures and include the appropriate units. Enter positive value if the velocity is directed to the right and negative value if the velocity is directed to the left. HA ? B (vB)2 = Value Unitsarrow_forward01: In a volleyball match . if the player at point (A) hit the ball with an initial velocity of (13 m/s) and at an angle of (18) with the horizon . 1. indicate whether the ball will touch the net at (C) or not. 2. Find (b) [The distance between the net and the point of collision of the ball with ground]. 2.43 m 9 marrow_forward
- The total momentum of a system of masses (moving bodies) in any one direction remains constant unless acted upon by an external force in that direction". This principle is applied to problems on collision of two bodies. Select one: O True O Falsearrow_forwardBlock A weighing 25 N collides with block B, which is at rest, with a speed of 30 m/sec. Block B weighs 10 N. Assuming perfectly elastic collision find the velocity of block B afte =)arrow_forwardThe following figure shows 2 particles of masses m1 and m2, with velocities before the collision of magnitude v1 and v2. If the collision is perfectly elastic, find the magnitude of the velocities v1' and v2' after the collision and the angle of incidence θ, as a function of the masses and velocities before the collision.arrow_forward
- The pilot of an airplane carrying a package of mail to a remote outpost wishes to release the package at the right moment to hit the recovery location A. What angle θ with the horizontal should the pilot’s line of sight to the target make at the instant of release? The airplane is flying horizontally at an altitude of 178 m with a velocity of 239 km/h.arrow_forward9) The particle D travels counterclockwise along a spiral path at a constant speed of 1 m/s. The path can be described by where b= 0.5 m Determine the angular velocity of the particle and the radial velocity when 0 = л/2 rad. 0 = r (1) 2 (3)² = D 0 Ⓒ 0 Page 2 of 2arrow_forwardA particle, of mass 9 kg, is attached to two identical springs. The other ends of the springs are attached to fixed points, A and B, which are 1.2 metres apart on a smooth horizontal surface. The springs have modulus of elasticity 45 N and natural length 0.4 m. The particle is released from rest at a distance of 0.5 metres from B and moves on the line AB. The midpoint of AB is C. At timet seconds after release, the displacement of the particle from C is x metres, where the direction from A to B is taken to be positive. www C www В (а) Show that the resultant force on the particle, at time t, is -225x newtons. (b) Hence show that the particle moves with simple harmonic motion. (c) State the period of this motion. (d) Find the speed of the particle when it is 0.05 metres from C. (e) Write down an expression for x in terms of t.arrow_forward
- Gravitational Slingshot Often in designing orbits for satellites, people use what is termed a "gravitational slingshot effect." The idea is as follows: A satellite of mass m; and speed v,i circles around a planet of mass m, that is moving with speed v in the opposite direction. See the diagram below: Although the satellite never touches the planet, this interaction can still be treated as a collision because of the gravitational interaction between the planet and satellite during the slingshot. Since gravity is a conservative force, the collision is elastic. Use an x-axis with positive pointing to the right. Solve for the unknowns below algebraically first, then use the following values for the parameters. m, = 2.40E+24 kg m; = 880 kg Viz = 3.050E+3 m/s Vpiz = -6.10E+3 m/s Solve for the final velocity of the satellite after the collision.arrow_forwardPROBLEM 3.5 A ball is shot at a ground level at angle of 60 degrees with the horizontal with an initial velocity of 150 m/s. Determine the height of the ball after 4 sec. 6. с. 700 m d. 800 m а. 500 m b. 600 marrow_forwardBall A has a mass of 3 kg and is moving with a velocity of (vA)ı = 8 m/s when it makes a direct collision with ball B, which has a mass of 2.5 kg and is moving with a velocity of (vB)1 = 5 m/s. Suppose that e = 0.8. Neglect the size of the balls. (v), Part A Determine the velocity of A just after the collision measured to the right. Express your answer to three significant figures and include the appropriate units. Enter positive value if the velocity is directed to the right and negative value if the velocity is directed to the left. (vA)2 = Part B Determine the velocity of B just after the collision measured to the right. Express your answer to three significant figures and include the appropriate units. Enter positive value if the velocity is directed to the right and negative value if the velocity is directed to the left. (vB)2 =arrow_forward
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY