You and your friend are both 14 years old. Your friend however moves to a planet where just 30 minutes on that planet is the sam
1 answer:
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Answer:
114.92749 keV
Explanation:
r = Radius of trajectory
m = Mass of electron =
B = Magnetic field = 0.044 T
q = Charge of electron =
The centripetal force and the magnetic forces are conserved
Velocity of first electron
Velocity of second electron
Total kinetic energy is given by
Converting to eV
The energy of incident electron is 114.92749 keV
Answer:
a) 23 m/s
Explanation:
- Assuming no external forces acting during the collision, total momentum must be conserved, as follows:
- The initial momentum p₀, can be written as follows:
- The final momentum pf, can be written as follows:
- Since (2) and (3) are equal each other, we can solve for the only unknown that remains, v₂₀, as follows:
- This means that the 2.0-kg object was moving at 23 m/s in a direction opposite to the 6.0-kg object, so its initial speed, before the collision, was 23.0 m/s.