Everybody has to come together as a unity
Answer:
2.5 ft
Explanation:
minimum size of the mirror should be one half the person's height.
For this woman of 5 feet height, she would therefore need a mirror of length 2.5 feet
5ft ÷ 2 ft (half) = 2.5ft OR half of 5t is 2.5ft
M=F/A
Which means 30 divided by 5 m/s is 6kg(mass)
The complete queston is The amount of a radioactive element A at time t is given by the formula
A(t) = A₀e^kt
Answer: A(t) =N e^( -1.2 X 10^-4t)
Explanation:
Given
Half life = 5730 years.
A(t) =A₀e ^kt
such that
A₀/ 2 =A₀e ^kt
Dividing both sides by A₀
1/2 = e ^kt
1/2 = e ^k(5730)
1/2 = e^5730K
In 1/2 = 5730K
k = 1n1/2 / 5730
k = 1n0.5 / 5730
K= -0.00012 = 1.2 X 10^-4
So that expressing N in terms of t, we have
A(t) =A₀e ^kt
A₀ = N
A(t) =N e^ -1.2 X 10^-4t
