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Montano1993 [528]

2 years ago

9

Give me a possibble questions about working student?

1 answer:

Andreyy892 years ago

8 0

Answer:do when the what or them yea cause oh?

Explanation:

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In order for an ion to have a -1 charge, it must have

Jet001 [13]

Gaining electron makes it “negative”

3 0

2 years ago

Jorge wishes to observe the progress of his vacuum pump in evacuating a tall bell jar for the purpose of demonstrating that soun

natka813 [3]

Answer:

1.147 %

Explanation:

$\rho$ = Density of mercury = $1.36\times 10^4\ kg/m^3$

g = Acceleration due to gravity = 9.81 m/s²

h = Height of mercury = 8.69 m

Standard atmospheric pressure = $1.01\times 10^5\ Pa$

6.55 mmHg converting to Pa

$\rho gh\\ =1.36\times 10^4\times 9.81\times 8.69\times 10^{-3}\\ =1159.38504\ Pa$

Dividing air pressure by the above value

$\frac{1159.38504}{1.01\times 10^5}\times 100=1.147\ \%$

The fraction of atmospheric pressure is 1.147 %

8 0

2 years ago

Air will break down (lose its insulating quality) and sparking will result if the field strength is increased to about 3 × 106 N

CaHeK987 [17]

Answer:

Explanation:

Given

Electric Field Strength $E=3\times 10^6\ N/C$

When a charged particle enters the Electric field it Experience a force in the direction of electric field (for positive charge and vice-versa for negative charge)

charge on Electron $q=1.6\times 10^{-19}\ C$

mass of electron $m=9.1\times 10^{-31}\ kg$

Force $F=q\times E$

$F=1.6\times 10^{-19}\times 3\times 10^6$

$F=4.8\times 10^{-13}\ N$

acceleration of electron $a=\frac{F}{m}$

$a=\frac{4.8\times 10^{-13}}{9.1\times 10^{-31}}$

$a=0.527\times 10^{18}\ m/s^2$

6 0

2 years ago

Can someone pls explain this to me

zhenek [66]

Answer:

Explanation:

from snells law

sin(i)/sin(r) = refractive index

r = 90°

sin(i) = sin90°x 1.6

sin(i) = 1 x 1.6

angle of incidence = arcsin(1.6)

since sin90° = 1

hence,

angle of incidence = 36.86°

4 0

2 years ago

Read 2 more answers

What distance does light travel in water, glass, and diamond during the time that it travels 1.0 m in vacuum? The refractive ind

lidiya [134]

Answer:

refractive index for water,glass,diamond are 0.752m, 0.667m, 0.413m respectively

Explanation:

refractive index (n) = $\frac{velocity of light in air/vacuum}{velocity of light in substance}$

velocity = $\frac{distance}{time}$

The time for travel is kept constant for all mediums.

refractive index (n) = $\frac{\frac{distance in vacuum}{time} }{\frac{distance in medium}{time} }\\ \\=\frac{distance in vacuum}{distance in medium}$

distance in medium = $\frac{distance in vacuum}{refractive index of medium}$

$S_{medium} = \frac{S_{vacuum} }{n_{medium} }$

For water, n= 1.33

$S_{water} = \frac{1 }{1.33}$

$S_{water} = 0.752m$

For glass, n=1.5

$S_{glass}= \frac{1 }{1.5}$

$S_{glass} = 0.667m$

For diamond, n= 2.42

$S_{diamond} = \frac{1 }{2.42}$

$S_{diamond} = 0.413m$

3 0

2 years ago