The mass fraction of the hydrogen atom is 0.9995 u.
<h3>Calculation:</h3>
We know that mass fraction can be determines as,
Mass fraction = Mass of proton/mass of H atom
Given,
Mass of proton = 1.007276 u
Mass of H atom = 1.007825 u
Put the values in the formula,
Mass fraction = Mass of proton/mass of H atom
Mass fraction = 1.007276/1.007825
= 0.9995 u
Hence, the mass fraction of the hydrogen atom is 0.9995 u.
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Answer: exercise doing something you like. for example if you like dancing incorporate dancing in your workouts so you will be more likely to do it regularly
Explanation:
The magnitude of the net force causing the 2300kg car to slow down is 6900N
HOW TO CALCULATE FORCE:
- The net force applied on a moving object can be calculated by multiplying the mass of the object by its acceleration. That is;
- Force (N) = mass (kg) × acceleration (m/s²)
- According to this question, a 2300-kg car slows down at a rate of 3.0 m/s2 when approaching a stop sign. The net force causing the car to stop can be calculated as follows:
F = 2300kg × 3m/s²
F = 6900N
- Therefore, the magnitude of the net force causing the 2300kg car to slow down is 6900N.
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Answer:
The spring's maximum compression will be 2.0 cm
Explanation:
There are two energies in this problem, kinetic energy 
and elastic potential energy 
(with m the mass, v the velocity, x the compression and k the spring constant. ) so the total mechanical energy at every moment is the sum of the two energies:
Here we have a situation where the total mechanical energy of the system is conserved because there are no dissipative forces (there's no friction), so:
Note that at the initial moment where the hockey puck has not compressed the spring all the energy of the system is kinetic energy, but for a momentary stop all the energy of the system is potential elastic energy, so we have:
(1)
Due conservation of energy the equality (1) has to be maintained, so if we let k and m constant x has to increase the same as v to maintain the equality. Therefore, if we increase velocity to 2v we have to increase compression to 2x to conserve the equality. This is 2(1.0) = 2.0 cm
