Atomic mass= number of protons + number of neutrons
hope this helps
hope this helps
(3.8 * 10^-2 cm) * (4.4 * 10^-2 cm) * (7.5 * 10^2 cm)
1 answer:
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Lower mass: 1.20 kg, upper mass: 1.28 kg
Explanation:
In order to solve the problem, we consider the forces acting on the upper mass only first.
The upper mass is acted upon three forces:
- The applied force
, upward
- The weight of the mass itself,
, where
is the upper mass and
is the acceleration of gravity, downward
- The tension in the string,
, downward
Therefore, the equation of the forces for the upper mass is:
where
is the acceleration (upward)
Solving for ,
Now we can find the lower mass by considering the forces acting on it:
- The tension in the string, T = 16 N, upward
- The weight of the mass itself,
, where
is the lower mass, downward
So the equation of the forces is
And solving for the mass,
Learn more about acceleration and forces:
#LearnwithBrainly
For a concave mirror, the radius of curvature is twice the focal length of the mirror:
where f, for a concave mirror, is taken to be positive.
Re-arranging the formula we get:
and since the radius of curvature of the mirror in the problem is 24 cm, the focal length is
where f, for a concave mirror, is taken to be positive.
Re-arranging the formula we get:
and since the radius of curvature of the mirror in the problem is 24 cm, the focal length is