Answer:
An element's mass number (A) is the sum of the number of protons and the number of neutrons. ... Protons and neutrons both weigh about one atomic mass unit or amu. Isotopes of the same element will have the same atomic number but different mass numbers.
Explanation:
From the information given, there is 1,500 g mass that accelerates to a velocity of 10 m/s.
We use the formula F = m × v.
where F = force, m = mass and v = velocity.
In our case m = 1,500g which is 1.5 kg, and v= 10 m/s
F= m × v → F = 1.5 × 10 → F = 15
Therefore the amount of force that was applied to accelerate the object to 10m/s² is 15kg m/s² or 15 Newtons
here we can use energy conservation
like initial kinetic + potential energy is always conserved and it will be same at all points
so we can say
now we can plug in all the given values in it
now divide whole equation by mass "m"
so final speed will be 65.96 m/s
Answer:
Mechanical vs. Quartz Watch Movements
Mechanical watch movements are powered by gears and springs. They're autonomous little machines without the need for electric power sources, whereas quartz watches are powered by batteries that vibrate little crystals.