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2 years ago

2. State the right of a citizen.

Physics

1 answer:

suter [353]2 years ago

8 0

Explanation:

1. - right to vote

- the right to elect to be elected and so on.

- respect the rule of counrty

- pay taxs

- keeping the sovernitry of country

- make the counrty stable

- respect the diversity

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How do boron-10 and boron-11 differ?

tensa zangetsu [6.8K]

Answer:

I think it has to do something with their ionizations... not entirely sure though.

Explanation:

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2 years ago

TIME REMAINING

NARA [144]

Answer:

Her computer is producing thermal energy, not heat.

Explanation:

4 0

2 years ago

A 2500 N force accelerates a car at a rate of 3.0 m/s^2. What is the car’s mass? 250 kg

Ronch [10]

Apply Newton's second law to the car's motion:

F = ma

F = net force, m = mass, a = acceleration

Given values:

F = 2500N, a = 3.0m/s²

Plug in and solve for m:

2500 = m(3.0)

m = 830kg

5 0

3 years ago

A load of 36 N attached to a spring hanging

givi [52]

Answer:

The required force is 55.38 N.

Explanation:

First we have to find the spring constant K;

k = $\frac{mg}{d}$ = $\frac{36}{0.065}$ = 553.846 N/m

As,

F= -K $x$

or, F= - 553.846 × 0.10

or, F= -55.3846 N

Hence,

$F_{needed}$ = - $F_{spring}$

∴ $F_{needed}$ = 55.38 N

The required force to stretch it by this amount is 55.38 N.

3 0

3 years ago

An electron has a kinetic energy of 10.1 eV. The electron is incident upon a rectangular barrier of height 18.2 eV and width 1.0

podryga [215]

Answer:

factor that the electron's probability of tunneling through the barrier increase 2.02029

Explanation:

given data

kinetic energy = 10.1 eV

height = 18.2 eV

width = 1.00 nm

wavelength = 546 nm

solution

we know that probability of tunneling is express as

probability of tunneling = $e^{-2CL}$ .................1

here C is = $\frac{\sqrt{2m(U-E}}{h}$

here h is Planck's constant

c = $\frac{\sqrt{2\times 9.11 \times 10^{-31} (18.2-10.1) \times (1.60 \times 10^{-19}}}{6.626\times 10^{-34}}$

c = 2319130863.06

and proton have hf = $\frac{hc}{\lambda } = {1240}{546}$ = 2.27 ev

so electron K.E = 10.1 + 2.27

KE = 12.37 eV

so decay coefficient inside barrier is

c' = $\frac{\sqrt{2m(U-E}}{h}$

c' = $\frac{\sqrt{2\times 9.11 \times 10^{-31} (18.2-12.37) \times (1.60 \times 10^{-19}}}{6.626\times 10^{-34}}$

c' = 1967510340

the factor of incerease in transmisson probability is

probability = $e^{2L(c-c')}$

probability = $e^{2\times 1\times 10^{-9} \times (351620523.06)}$

factor probability = 2.02029

3 0

2 years ago