PHYSICS HIGH SCHOOL

Why is it useful to create neptunium by bombarding uranium with protons even though neptunium disintegrates in about two days?

Answers

Answer 1
Answer:

Answer;

  • Neptunium breaks down to produce plutonium used in bombs and americium.
  • it is also used in smoke detectors

Explanation;

  • Neptunium may be made by bombarding uranium with neutrons. However Neptunium atoms disintegrate to form plutonium.
  • Neptunium is useful. When Neptunium is bombarded with neutrons it is used to produce plutonium-238 which is used for spacecraft generators and terrestrial navigation beacons.
  • Plutonium used in bombs and americium. it is also used in smoke detectors.
  • Additionally, Neptunium is used in neutron detection equipment.

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a constant force of 391 n acts on a spacecraft of mass 7870 kg that has an initial velocity of 38 m/s. how far has the spacecraft traveled when it reaches a velocity of 4820 m/s?

Answers

Answer:

The distance travelled is 2.34*10^8 m.

Explanation:

The acceleration of the spacecraft is,

a=F/m

=391/7870 = 0.04968 m/s^2

The distance travelled,

d=v^2-v0^2/2a

=(4820)^2-(38)^2 / 2(0.04968)

=2.34*10^8 m.

1) A force of 28 N stretches a very light idealspring 0.71 m from equilibrium. What is the
force constant (spring constant) of the spring?
A) 39 N/m
B) 22 N/m
C) 46 N/m
D) 31 N/m

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