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Rina8888 [55]
3 years ago
7

Write the following decimals as fractions in simplest form

Mathematics
2 answers:
cluponka [151]3 years ago
8 0
-19/25 if you simplify it by 4
Elden [556K]3 years ago
7 0

19/25 is the answer if you simplify 76/100

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25% of what number is 1.4
Yuki888 [10]

Answer:

5.6

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A certain semiconductor device requires a tunneling probability of T = 10-5 for an electron tunneling through a rectangular barr
Goryan [66]

Answer:

Generally the barrier width is a = 1.9322 *10^{-9} \ m

Step-by-step explanation:

From the question we are told that

     The tunneling probability required is  T  = 1 * 10^{-5}

      The barrier height is  V_o  = 0.4 eV

       The electron energy is  E = 0.08eV

Generally the wave number is mathematically represented as

      k  =  \sqrt{ \frac{2 * m [V_o - E]}{\= h^2} }

Here m is the mass of the electron with the value  m  =  9.11 *10^{-31} \  kg

         h  is is know as h-bar and the value is  \= h = 1.054*10^{-34} \  J \cdot s

So

          k  =  \sqrt{ \frac{2 * 9.11 *10^{-31 } [0.4 - 0.04] * 1.6*10^{-19}}{[1.054*10^{-34}^2]} }

=>      k = 3.073582 *10^{9}  \ m^{-1}

Generally the tunneling probability is mathematically represented as

          T  = 16 * \frac{E}{V_o }  * [1 - \frac{E}{V_o} ] * e^{-2 * k * a}

So

        1.0 *10^{-5} = 16 * \frac{0.04}{0.4 }  * [1 - \frac{0.04}{0.4} ] * e^{-2 * 3.0736 *10^{9} * a}

=>    6.944*10^{-6}= e^{-2 * 3.0736 *10^{9} * a}

Taking natural log of both sides

          ln[6.944*10^{-6}] = -2 * 3.0736 *10^{9} * a}

=>        -11.8776  = -2 * 3.0736 *10^{9} * a}

=>        a = 1.9322 *10^{-9} \ m

       

4 0
3 years ago
A buisness in the florida keys offers key west jet ski tours for the following rates:
Luden [163]
No, because 2 / 2 is not 3/4
7 0
3 years ago
Complete the table of values for the linear relation y = -5x + 10.
musickatia [10]

the answer will be -5

Step-by-step explanation:

because you have to minus 5 and 10

so the answer will be x =- 5

3 0
3 years ago
Solve for s in terms of q,r,and t. r=s+q-t
IgorC [24]
Answer; r=s+q-t —-> S=t-q+r
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3 years ago
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