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erma4kov [3.2K]
3 years ago
7

Help this is for my civics class

Physics
1 answer:
jekas [21]3 years ago
4 0
The anawer is D hope this helps!
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5) Quiz - NO links
Olegator [25]
False does not last that long
5 0
3 years ago
A large lightning bolt is observed to have a 19500 A current and move 36 C of charge. What was its duration?
Lynna [10]

Answer:

Its duration is 1.85*10⁻³ s or 1.85 ms

Explanation:

The intensity of electric current I is defined as the amount of electric charge Q (measured in Coulombs) that passes through a section of a conductor in each unit of time. The letter I is used to name the Intensity and its unit is the Ampere (A).

The intensity of electric current is expressed as:

I=\frac{Q}{t}

where:

I: Intensity expressed in Amps (A)

Q: Electric charge expressed in Coulombs (C)

t: Time expressed in seconds (s)

Being:

  • I= 19500 A
  • Q=36 C
  • t=?

Replacing:

19500 A=\frac{36 C}{t}

Solving:

19500 A*t= 36 C

t=\frac{36 C}{19500 A}

t= 1.85*10⁻³ s= 1.85 ms (being 1 s= 1,000 ms)

<u><em>Its duration is 1.85*10⁻³ s or 1.85 ms</em></u>

8 0
3 years ago
A car is traveling with a constant speed when the driver suddenly applies the brakes, giving the 14) car a deceleration of 3.50
sergij07 [2.7K]
To be able to determine the original speed of the car, we use kinematic equations to relate the acceleration, distance and the original speed of the car moving. 

First, we manipulate the one of the kinematic equations
 
v^2 = v0^2 + 2 (a) (x)  where v = 0 since the car stopped

Writing the equation in such a way that the initial velocity or v0 is written on one side of the equation,

<span>we get v0 = sqrt (2(a)(x))

Substituting the known values,

v0 = sqrt(2(3.50)(30.0))
v0 = 14.49 m/s 
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Therefore, before stopping the car the original speed of the car would be 14.49 m/s
7 0
4 years ago
Momentum is the mass of an object multiplied by its velocity.<br> a. True<br> b. False
Ostrovityanka [42]
A.) True. Momentum is the mass of an object multiplied by its velocity.

It is defined as a mass in motion. It refers to the quantity of motion an object has.

8 0
4 years ago
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Which is an example of a stage?
Nana76 [90]

Explanation:

wait I will give it ur answer

7 0
3 years ago
Read 2 more answers
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