A nucleus that captures a stray neutron must bring the neutron to a stop within the diameter of the nucleus by means of the strong force. That force, which "glues" the nucleus together, is approximately zero outside the nucleus. Suppose that a stray neutron with an initial speed of 1.9 × 107 m/s is just barely captured by a nucleus with diameter d = 1.3 × 10-¹4 m. Assuming that the strong force on the neutron is constant, find the magnitude of that force. The neutron's mass is 1.67 × 10-27 kg.

The 550-kg uniform beam is subjected to the three external loads shown. Compute the reactions at the support point O. The x-y plane is vertical. Positive values are to the right, up, and counterclockwise. y 34 3.1 kN 27 kN-m B 3.2 kN -1.1 m- 1.9 m 1.9 m

15-139. The missile weighs 40 000 lb. The constant thrust provided by the turbojet engine is T = 15 000 lb. Additional thrust is provided by two rocket boosters B. The propellant in each booster is burned at a constant rate of 150 lb/s, with a relative exhaust velocity of 3000 ft/s. If the mass of the propellant lost by the turbojet engine can be neglected, determine the velocity of the missile after the 4-s burn time of the boosters. The initial velocity of the missile is 300 mi/h.

A musket ball, 0.2 kilograms, is shot with the speed of 313 meters per second into a metal can holding some clay.  The musket ball penetrates 0.134 meters into the clay before coming to a stop.    What force does the clay exert in stopping the musket ball. THE ANSWER IS -73111.19. I JUST DO NOT KNOW HOW TO GET THERE

7.4

A projectile proton with a speed of 1500 m/s collides elastically with a target proton initially at rest. The two protons then move along perpendicular paths, with the projectile path at 72° from the original direction. After the collision, what are the speeds of (a) the target proton and (b) the projectile proton?   (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                                                           This answer has no units° (degrees)mkgsm/sm/s^2NJWN/mkg·m/s or N·sN/m^2 or Pakg/m^3gm/s^3times (b) Number Enter your answer for part (b) in accordance to the question statement Units Choose the answer for part (b) from the menu in accordance to the question statement                                                           This answer has no units° (degrees)mkgsm/sm/s^2NJWN/mkg·m/s or N·sN/m^2 or Pakg/m^3gm/s^3times

One hazard of space travel is debris left by previous missions. There are several thousand objects orbiting Earth that are large enough to be detected by radar, but there are far greater numbers of very small objects, such as flakes of paint. Calculate the force exerted in newtons by a 0.200 mg chip of paint that strikes a spacecraft window at a relative speed of 4.00 ✕ 103 m/s and sticks, given the collision lasts 6.00 ✕ 10−8 s. (Enter the magnitude.)

Physics Ch. 9 #43

Problem 7: The figure shows Superhero and Trusty Sidekick hanging motionless from a rope. Superhero's mass is 98 kg, while Trusty Sidekick's is 47 kg, and the mass of the rope is negligible. Randomized Variables m¡ = 98 kg m2 = 47 kg m 2 Part (a) Find the tension in the rope above Superhero in Newtons. Numeric : A numeric value is expected and not an expression. T = Part (b) Find the tension in the rope between Superhero and Trusty Sidekick in Newtons. Numeric : A numeric value is expected and not an expression. T' =

A water molecule consists of an oxygen atom and two hydrogen atoms. The two O—H bonds are each0.1 nm long and form an angle of 107◦ with each other. Where is the molecule’s centre of mass located?Consider the mass of the oxygen atom to be 16 times the mass of a hydrogen atom, and place yourhydrogen atoms along the x-axis of your coordinate system. [Hint: Draw your coordinate system!].