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3 years ago

why does electrical process signals often take the form of a current instead of voltage? two specific reasons for this.

2 answers:

7 0

Electrical process signals previously were mainly presented by voltage. It is only with modern day digital electronics that current replaces voltage as the signal.

This is because the basic building block of ICs is transistor which is driven by current; instead of voltage. Voltage signals also have the disadvantage of signal loss over distance due to parasitic resistance. Current signal requires more power to be transmitted in long distance but otherwise does not suffer signal loss.

wolverine [178]3 years ago

5 0

voltage signals drop over distance due to resistance while current remains the same.

also the building blk of electronic device is a transistor n transistor is turned on/off by current; so dats the signal instead of voltage.

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Which is greater the attraction of the earth for 1 kg of aluminum or aluminum or attraction of 1kg of aluminum for the earth?

OleMash [197]

Those forces are exactly equal.

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3 years ago

Rebecca heated 50mL of water from 0 degrees Celsius to 60 degrees Celsius. How much energy did she use to heat the water? Rememb

GuDViN [60]

Answer:

Q = 12540 J

Explanation:

It is given that,

Mass of water, m = 50 mL = 50 g

It is heated from 0 degrees Celsius to 60 degrees Celsius.

We need to find the energy required to heat the water. The formula use to find it as follows :

$Q=mc\Delta T$

Where c is the specific heat of water, c = 4.18 J/g°C

Put all the values,

$Q=50\times 4.18\times (60-0)\\Q=12540\ J$

So, 12540 J of energy is used to heat the water.

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2 years ago

A 40kg load is raised to a height of 25m. If the operation requires 1 min, find the power required

OlgaM077 [116]

Answer:

163.33 Watts

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 40 Kg

Height (h) = 25 m

Time (t) = 1 min

Power (P) =..?

Next, we shall determine the energy. This can be obtained as follow:

Mass (m) = 40 Kg

Height (h) = 25 m

Acceleration due to gravity (g) = 9.8 m/s²

Energy (E) =?

E = mgh

E = 40 × 9.8 × 255

E = 9800 J

Finally, we shall determine the power. This can be obtained as illustrated below:

Time (t) = 1 min = 60 s

Energy (E) = 9800 J

Power (P) =?

P = E/t

P = 9800 / 60

P = 163.33 Watts

Thus, the power required is 163.33 Watts

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2 years ago

What is the mean free path for the molecules in an ideal gas when the pressure is 100 kPa and the temperature is 300 K given tha

larisa86 [58]

Explanation:

Below is an attachment containing the solution.

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3 years ago

Many biological systems are well-described by the laws of statistical physics. A simple yet often powerful approach is to think

GuDViN [60]

Answer:

z1/z2

Explanation:

we have no quantum effects therefore we can make use of Maxwell Boltzmann distribution in the description of this system.

using the boltzman distribution the probability of finding a particle in energy state

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we have

gi to be degeneration of the ith state

ei to be energy of ith state

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We have R to be equal to

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2 years ago