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pav-90 [236]
3 years ago
5

A substance with a pH of 1.0 will

Physics
1 answer:
Darina [25.2K]3 years ago
3 0
I think its likely to explode
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A copper transmission cable 170 km long and 10.0 cm in diameter carries a current of 100 A .
Bond [772]

Answer:

a = = 37.2V

b = 13.39MJ

Explanation:

Given that

L = 170 × 10³

r = d/2

= 10cm / 2 = 5 cm

current I = 100A

we are to find the potential drop across the cable

so, we can use ohm’s law

V = IR = I (ρL/A)

ρ = resistivity of the copper

= 1.72 × 10⁻⁸ Ω.m

A = πr²

V = I(ρL/πr²)

= 100 (( 1.72 × 10⁻⁸ * 170 × 10³) / ( π * 0.05²))

= 37.2V

(b)

Energy (loss) = Pt

Enery (loss) = IVt

 3600s per hour

= (100A)(37.2V)(3600s)

= 13.39MJ

8 0
3 years ago
The maximum electric field strength in air is 3.0 Mv/m . Stronger electric fields ionize the air and create a spark. What is the
adoni [48]

Answer:

The value is  P_{max} =  2.11 * 10^{6} \  W

Explanation:

From the question we are told that  

    The maximized electric field strength is  E =  3.0 \ MV/m = 3.0 *10^{6} \  V/m

     The diameter is  d =  1.5\ cm  =  0.015 \  m

Generally the cross -sectional area is mathematically represented as

 =>      A =  \frac{\pi * d^2 }{4}

 =>      A =  \frac{3.142  * 0.015^2 }{4}

 =>      A = 0.0001767 \  m^2

Generally the maximum power is mathematically represented as

       P_{max} =  \frac{E_{max}^2}{ 2 * \mu_o * c }  *  A

Here c is the speed of light with value  c =  3.0 *10^{8} \  m/s

        \mu_o is the permeability of free space with value  \mu_o  = 4 \pi *10^{-7} \  H/m

      P_{max} =  \frac{ (3.0 *10^{6})^2}{ 2 * (4 \pi *10^{-7}) * 3.0 *10^{8} }  *   0.0001767

=>   P_{max} =  2.11 * 10^{6} \  W

4 0
2 years ago
How long does it take for a truck accelerating at 1.5 m/s^2 to got from rest to 75 km/hr
Free_Kalibri [48]

Answer:

t = 13.9s

Explanation:

u = 0 m/s

v = 75 km/h

= 20.83 m/s

a = 1.5 m/s²

Using

v = u + at

20.83 = 0 + 1.5t

t = 13.9s

6 0
3 years ago
Wyatt is moving a box with a mass of 37 kg a distance of 37 meters. Wyatt did 360 J of work in 2 minutes when moving the box. Wh
pentagon [3]
His power output was 3 Watt (360 Joule/120 seconds). The power output can be calculated by dividing the quantity of work by the amount of second needed for the activity and also by multiplying the force amount with the velocity of the activity. The power output usually used for measuring the ability of machine for doing its job.
7 0
2 years ago
Read 2 more answers
What is temperature?
hammer [34]

The term temperature has to do with the  measure of an object's "hotness".

<h3>What is temperature?</h3>

The term temperature has to do with how hot or cold a body is. In other words, the word temperature brings us to call to mind the degree of hotness or coldness of a body.

Succinctly put, the term temperature has to do with the  measure of an object's "hotness".

Learn more about temperature:brainly.com/question/7510619

#SPJ1

5 0
2 years ago
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