Answer:
t =1.285 s
Explanation:
u=1.43 m/s
∅=6.47°
We know that μ(k)=tan∅
F(net)=-f(k)
ma =μ(k)*m*g
a =μ(k)*g equation 1
v=u+at
0=u+(μ(k)*g*t
Putting values
t=u/(g*tan∅)
t=
t=1.285 s
Select the choice that best completes the following sentence: A _______ is made up of one or more _______.
1 answer:
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Answer:
n=6.56×10¹⁵Hz
Explanation:
Given Data
Mass=9.1×10⁻³¹ kg
Radius distance=5.3×10⁻¹¹m
Electric Force=8.2×10⁻⁸N
To find
Revolutions per second
Solution
Let F be the force of attraction
let n be the number of revolutions per sec made by the electron around the nucleus then the centripetal force is given by
F=mω²r......................where ω=2π n
F=m4π²n²r...............eq(i)
as the values given where
Mass=9.1×10⁻³¹ kg
Radius distance=5.3×10⁻¹¹m
Electric Force=8.2×10⁻⁸N
we have to find n from eq(i)
n²=F/(m4π²r)