An atom in the ground state has a collision with an electron, then emits a photon with a wavelength of 1240 nm. What conclusion
can you draw about the initial kinetic energy of the electron
1 answer:
Answer:
attached below is the free body diagram of the missing illustration
Initial kinetic energy of the electron = 3 eV
Explanation:
The conclusion that can be drawn about the kinetic energy of the electron is
E = initial kinetic energy of the electron
E = -4 eV
E = -1 eV
insert the values into the equation above
= -1 -(-4) eV
= -1 + 4 = 3 eV
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The mass of the seashell suspended by the two strands of spider silk is 0.28 kg.
The given parameters:
- <em>Tension on each strand of silk, T = 1.42 N</em>
- <em>Angle of inclination of each strand, θ = 75⁰</em>
The mass of the seashell at equilibrium is calculated by applying Newton's second law of motion;
where;
- W is the weight of the seashell
The weight of the seashell is calculated as;
The mass of the seashell is calculated as follows;
Thus, the mass of the seashell suspended by the two strands of spider silk is 0.28 kg.
Learn more about equilibrium forces here: brainly.com/question/8045102
Answer:
a) , b)
, c)
Explanation:
a) The speed of the ball is determined by applying the Principle of Energy Conservation:
The speed of the ball when the string makes an angle of 12° with the vertical is:
b) The maximum speed of the ball is:
c) The angle between the string and the vertical when the speed of the ball is one-third its maximum value is obtained by proving different values of . The solution is approximately: