Nuclear Physics: In nuclear fusion, two atomic nuclei can merge to form new elements. Atomic nuclei are positively charged, so they repel. However, if they come close enough to "touch" then nuclear forces overcome the electric forces and the nuclei will quickly fuse together. The whole process is over in less than 4.18 x 11s. Consider a head-on collision between two identical nuclei moving directly toward each other with equal speeds. Each nuclei has a mass of 1.8 x 10 26 kg, a radius of 2.3 x 10-15 m, and a charge of +7e. What minimum speed will allow the nuclei to "touch" and fuse together?
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- Kaya, a crew member on an interplanetary space ship, is on a spacewalk. She realizes that her ship is moving away from her at 0.5 m/s. She and her spacesuit have a total mass of 95 kg. Her space suit includes a 15 kg backpack, which is included in the 95 kg total mass.a). What is the minimum velocity she will have to throw the backpack so that she can gain enough velocity to eventually catch up with the ship? b). Kaya applies an average force of 400 N to the backpack for 0.05 seconds. Will Kaya make it back to the ship? If so, determine how much time it will take for her to reach the ship. If not, determine how much more force she would need to apply to make it back.A 83.8-kg boy and a 59.4-kg girl, both wearing skates face each other at rest on a skating rink. The boy pushes the girl, sending her to the left with a velocity of -2.72 m/s. Neglecting friction, determine the subsequent velocity of the boy to the right. Answer: + m/sA 35.0 kg boy and 28.0 kg girl stand, on frictionless ice, at the center of an ice skating rink. The girl pushes the boy away. How far apart are they after boy has slid 4.0 m from the center of the rink?
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