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3 years ago

7

Which properties make a metal a good material to use for electrical wires? malleability and reactivity conductivity and ductilit

y ductility and malleability reactivity and conductivity

2 answers:

konstantin123 [22]3 years ago

9 0

Conductivity ... So it can carry electric current without energy loss.

Ductility ... So it can be stretched out to make wire without breaking.

vesna_86 [32]3 years ago

8 1

Answer:

d

Explanation:

i did the quiz

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A top fuel drag racer reaches a maximum speed of 330 mph at the end of the 1/4-mile (402 m) racetrack. Part A - Assuming that th

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Answer:

a. 27 m/s2

b. 2.75:1

Explanation:

a.

Since it is assumed that the race car starts from rest, initial velocity, u = 0 m/s

At the end of 402 m, distance, s = 402 m; and

Final velocity, v = 330 m/h

Converting this to m/s,

$v=\dfrac{330\times1609}{3600}=147.5$ m/s

Using the equation of motion

$v^2=u^2+2as$

$a=\dfrac{v^2-u^2}{2s}$

$a=\dfrac{147.5^2-0^2}{2\times402}=27$

b.

If acceleration due to gravity is taken as 9.8 m/s2, then

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What is the slit spacing of a diffraction necessary for a 600 nm light to have a first order principal maximum at 25.0°?

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Explanation:

Given that,

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Angle, $\theta=25^{\circ}$

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$d\sin\theta=n\lambda$

n is 1 here

d is slit spacing

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So, the slit spacing is $1.41\ \mu m$ .

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