Answer:
<em>newton</em>
<em>newtonThe SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m.</em>
Explanation:
Given that,
The disintegration constant of the nuclide,
(a) The half life of this nuclide is given by :
(b) The decay equation of any radioactive nuclide is given by :
Number of remaining sample in 4.44 half lives is :
So,
(c) Number of remaining sample in 14.6 days is :
So,
Hence, this is the required solution.
Answer:
<h2>a) -1.93m</h2><h2>b) +0.643</h2>
Explanation:
Image distance and focal length of a convex mirror is negative.
a) Using the mirror formula to determine the image distance;
f = focal length of the mirror = -5.40m
u = object distance from the mirror = 3.00m
v = image distance from the mirror
b) Magnification = image distance/object distance
Magnification = 1.93/3
Magnification = +0.643
<em>Note that we do not use the negative value of the image distance to calculate the magnification of the object</em>
The mass of the rider 1 is 4 g.
<h3>
The use of a rider in mass measurement</h3>
Rider is a metallic wire piece which is of certain mass and can be bent . It can move the beam of the Paul Bunge Balance.
The riders are the sliding pointers positioned on top of the beams to show the pan and beam weight in grams.
<h3>Mass of the rider 1</h3>
The mass of the rider 1 is obtained by subtracting mass of riders as show below.
mass of rider 1 = mass of object - (mass of rider 2 + mass of rider 3)
mass of rider 1 = 694 g - (600 g + 90 g)
mass of rider 1 = 694 g - 690 g
mass of rider 1 = 4 g
Thus, the mass of the rider 1 is 4 g.
Learn more about use of riders in mass measurement here: brainly.com/question/1747339
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