Answer:
m1 = √2kg , m2 = 1kg , m3 = 1kg
Explanation:
Since the mass m1 can't move, the sum of horizontal and vertical forces must be zero. Since the mass m1 is suspended symmetrically the horizontal forces are equal if mass m2 and m3 are equal.
The tension in each string suspending mass m1 must match the force of gravity pulling on m1. The tension in each string is:
T = m2*g = m3*g = g
The vertical forces pulling m1 up is therefore: 2 * T * cos 45° = √2 * T = √2 * g
This force must match the force of gravity G pulling m1 down. G = m1 * g
Combining both equations: √2 * g = m1 * g
m1 = √2
The roughness of the surface, the mass of the object, and the area of contact.
That's right, the correct answer is
<span>A) The isotopes have a long half-life and only remain radioactive for a long time period
The half life of an isotope is the time it takes for the amount of the sample to reduce to half of its initial value. If an isotope has a long half-life, it means it takes a long time to reduce down to a significant level, so it will remain radioactive for a long time period.</span>
Option A. A force does work on an object if a component of the force is is parallel to the displacement of the object.
<h3>Work done by force</h3>
The force applied to an object to displace it from a given point to another point is known as work done on the object.
W = Fd cosθ
where;
- f is the magnitude of applied force
- d is the displacement of the object.
- θ is the angle between the applied force and displacement.
Thus, A force does work on an object if a component of the force is is parallel to the displacement of the object.
Learn more about work done here:brainly.com/question/8119756
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The answer is C. Neutron star.