What is the smallest possible piece an element in broken down into my normal laboratory processes

Goshia [24]

Answer:

the anwer is true , because production will decrease

8 0

3 years ago

In a US household, the voltage in an electric outlet (in volts) is given by the following equation, where t is in seconds. V = 1

Damm [24]

Answer:

a) The voltage in an european house is 2,17 times greater than in an american House. That is 183 volts more than in US.

b) the number of cycles or oscillations for an US House is 60 cycles per second

Explanation:

To answer this this question you have to know the wave equation:

x(t) = A Sin (a + b.t)

where

x(t) = is the position as a time function... In this exercise we could call V(t) instead of x(t) beacause we want to know voltage vs time.

A = is the amplitude of the wave. In this case the maximum voltage that can be reached.

a = is the offset in time or number of waves (zero in this exercise)

b = constant that varies the frequency

then...

a) calculate the ratio between both amplitudes:

$A_{Europe} / A_{US} = 339 / 156 = 2,17$

b) frequency (Oscillations) is:

b = 2pi/T = 2pi*F remember that: T = 1/F

where

F = frequency

T = Period

so for US household we have:

120pi =2pi*F

therefore

F = 120/2 = 60 Hertz

5 0

4 years ago

Copper is a metal commonly used for electrical wiring in houses. Which metal conducts electricity better than copper at 20°C?

jek_recluse [69]

The correct answer is silver metal.
Conductivity measures the ability of a material or a metal to transmit energy, conductivity may be electrical, thermal or acoustical conductivity. The most electrical conductive element is silver, followed by copper and Gold. Silver also has the highest thermal conductivity as compare to any element. However, copper and Gold are more often used in electrical applications since copper is less expensive and gold has a much higher corrosion resistance.

6 0

3 years ago

benzene c6h6 and toluene c6h5ch3 for ideal solutions. at 35c the vapor pressure of benzene is 160 torr and that of toluene is 50

LuckyWell [14K]

Answer:

mole fraction of toluene 0.53

Explanation:

given data:

vapor pressure of benzene = 160 torr

vapor pressure of toluene = 50 torr

mole of benzene = 3.8 mol

mole of toluene = 5.7 mol

calculate total pressure

here total pressure = mole fraction of toluene x vapour pressure of toluene + mole fraction of benzene x vapor pressure of benzene

mole fraction of toluene $= \frac{5.7}{5.7+3.8}$

mole fraction of Benzene $= \frac{3.8}{5.7+3.8}$

$= \frac{5.7}{( 5.7 + 3.8 )}*50 + \frac{3.8}{5.7 + 3.8}*160$

= 94 torr

we have mole fraction of toluene in vapor phase =\frac{50}{94} =

= 0.53 (ans)

6 0

3 years ago

A metal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpend

andrezito [222]

Answer:

Explanation:

We have a metal ring of diameter

d = 4.2cm = 0.042m

r = d/2 = 0.021m

And it is place between the north pole and south pole of a large magnet with the plane of it's area perpendicular to the magnetic field.

Given that the magnetic field is

B = 1.12 T

The rate of decrease of magnetic field is 0.2T/s, since it is decrease then,

dB/dt = -0.2 T/s

The induce electric field is given as,

From faradays law

ε = ∫E•dl = -dΦ/dt

Magnetic flux is given as

Φ = BA

Φ = πr²×B = πr²B

Also, ∫E•dl = E×2πr = 2πrE

So,

∫E•dl = -dΦ/dt

2πrE = -d(πr²B) / dt

r is a constant, then

2πrE = -πr² dB/dt

Divide both side by πr

2E = -r dB/dt

E = -r dB/dt / 2

E = -0.021 × -0.2 / 2

E = 0.0021 V/m

The magnetic field point from north to south pole and it is decreasing and this means that the magnetic flux is also decreasing, so the induce magnetic field must point in the same direction of the original magnetic field, so the induce current circulate counter-clockwise as viewed from the south pole

5 0

4 years ago