75 J. All I did was multiply the 2 numbers to get 75
9.4 × 10⁻¹⁹ J. (2 sig. fig).
<h3>Explanation</h3>
The kinetic energy of an object depends on its mass and its speed. Mass is given for this neutron. However, the speed of the neutron needs to be found.
What's the speed of this neutron?
(3 sig. fig. Speed is an intermediate quantity. Include at least one more sig. fig. for the value of kinetic energy to be accurate to 2 sig. fig.)
What's the kinetic energy of this neutron?
,
where
- is the mass of the object, and
- is the speed of the object.
.
(2 sig. fig as in mass, distance travelled, and time).
The speed of the system when it passes through the equilibrium position is
, and this corresponds to the maximum speed of the oscillator.
The angular frequency of the oscillator is given by
where k is the spring constant, and m the mass. Substituting the data, we find
and since the amplitude of the oscillation, A, is related to the maximum speed by
we can re-arrange this equation to calculate A:
Answer:
Balanced forces do not result in any change in motion. forces: forces applied to an object in opposite directions that are not equal in size. Unbalanced forces result in a change in motion.
Explanation: