In 20 seconds mass accelerates from rest to a velocity of 450 m/s. What is the acceleration of the mass?

Roman55 [17]

Answer: I think the first option is the best option because water isn't a heat conductor and all the other options are not very accurate.

Explanation:

8 0

3 years ago

lana [24]

Answer:

no mam

Explanation:

the answer to the question is

7 0

3 years ago

Ilya [14]

That's the description of a ground fault circuit interrupter (GFCI).

The choices you posted seem to belong to a different question.

8 0

3 years ago

Sati [7]

The awenser is b air resistance

5 0

3 years ago

ICE Princess25 [194]

Answer:

$n=1.86*10^{-30}m^3$

Explanation:

From the question we are told that:

Fermi energy of conduction electrons $E_f=0.548J$

Generally the equation for Fermi energy is mathematically given by

$E_f=\frac{3}{\pi}^2/3*\frac{h^2}{8m}*{n^{2/3}}$

${n^{2/3}}=\frac{E_f}{\frac{3}{\pi}^2/3*\frac{h^2}{8m}}$

Where

h= Planck's constant

${n^{2/3}}=\frac{E_f}{\frac{3}{\pi}^2/3*\frac{h^2}{8m}}$

${n^{2/3}}=\frac{0.548J}{3.62*10^{-19}}$

$n=(1.51*10^{-20})^{3/2}$

$n=1.86*10^{-30}m^3$

3 0

3 years ago