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djyliett [7]
3 years ago
11

Only put coolant into your radiator when the engine is _____.

Engineering
1 answer:
Arada [10]3 years ago
5 0

Only put ciilant into ur radiator when the engine is cool (D)

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What can be the main disadvantage of pulse amplitude modulation?​
Feliz [49]

Answer:

transmission bandwidth required is very large.

Explanation:

4 0
2 years ago
The universe is sometimes described as an isolated system. Why?
Romashka [77]

Answer and Explanation :The universe means it includes everything, even the things which we can not see is an isolated system because universe has no surroundings. an isolated system does not exchange energy or matter with its surroundings.Sometime universe is treated as isolated system because it obtains lots of energy from the sun but the exchange of matter or energy with outside is almost zero.

  • the total energy of an isolated system is always constant means total energy of universe is also constant
  • there is no exchange of matter or energy in an isolated system
8 0
3 years ago
Suppose that the material to be used in a fuse melts when the current density rises to 459 A/cm2. What diameter of cylindrical w
I am Lyosha [343]

Answer:

The required diameter of the fuse wire should be 0.0383 cm  to limit the current to 0.53 A with current density of 459 A/cm² .

Explanation:

We are given current density of 459 A/cm²  and we want to limit the current to 0.53 A in a fuse wire. We are asked to find the corresponding diameter of the fuse wire.

Recall that current density is given by

j = I/A

where I is the current flowing through the wire and A is the area of the wire

A = πr²

but r = d/2  so

A = π(d/2)²

A = πd²/4

so the equation of current density becomes

j = I/πd²/4

j = 4I/πd²

Re-arrange the equation for d

d² = 4I/jπ  

d = √4I/jπ

d = √(4*0.53)/(459π)

d = 0.0383 cm

Therefore, the required diameter of the fuse wire should be 0.0383 cm  to limit the current to 0.53 A with current density of 459 A/cm² .

6 0
2 years ago
Read 2 more answers
A water initially contains 40 mg · L−1 of Mg2+. The pH of the water is increased until the concentration of hydroxide ion (OH−)
Darya [45]

Answer:

concentration of Mg ion  = 0.0122 g/L

Explanation:

Given data;

initial concentration of Magnesium in water is 40 mg/l

concentration of (OH^-) = 0.001000

we have dissociation reaction  Magnesium dioxide

Mg(OH)_2 \rightarrow Mg^{2+} +  2OH^{-}

from above reaction we can conclude

concentration of Mg(OH)_2 = \frac{OH}{2} = \frac{.0010}{2} = 0.0005 M

Mass of magnesium ion is calculated as = Mg mole * molar mass of magnesium

concentration of Mg ion = 0.0005*24.305 g/mol = 0.0122 g/L

3 0
3 years ago
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mote1985 [20]
I just deleted among us :/
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3 years ago
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