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Sati [7]
2 years ago
13

If the force is 4 newtons between two charged spheres separated by 3 centimeters, calculate the force between the same spheres s

eparated by 6 centimeters.
2 N
0.3 N
6 N
1 N
Physics
1 answer:
il63 [147K]2 years ago
7 0

Answer:

1 Newton

Explanation:

F=9*10^9*q0q1/r^2]]

F=9*10^9*(q0q1)/ r^2

r=3cm

F=4N

F=9*10^9*(q0q1)/3^2

4=9*10^9*(q0q1)/9

4=10^9 q0q1

q0q1=4/10^9

q0q1=4*10^-9

To calculate the force between the forces at a distance of 6 cm

F=9*10^9*(q0q1)/ r^2

=9*10^9*(4*10^-9)/6^2

=9*10^9*(4*10^-9)/36

=10^9*4*10^-9/4

=10^9*10^-9

=1 Newton

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Answer:

The distance covered by the sprinter, s = 40 m

Explanation:

Given data,  

The initial velocity of the sprinter, u = 0 m/s

The acceleration of the sprinter, a = 5 m/s²

The time period of acceleration of the sprinter, t = 4 s

Using the II equations of motion

                   s = ut + ½ at²

                       = 0 + ½ (5) (4)²

                       = 40 m

Hence, the distance covered by the sprinter, s = 40 m                    

4 0
2 years ago
Which two pieces of evidence most directly support the idea that the universe is expanding from one original point?
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Answer:

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Explanation:

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3 years ago
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A person riding a bike has an initial velocity of 10 meters per second and accelerates at a constant rate of 2 meters per second
Montano1993 [528]

After 5 seconds, the person would have travel 75 m

<h3>What is acceleration? </h3>

This is defined as the rate of change of velocity which time. It is expressed as

a = (v – u) / t

Where

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  • v is the final velocity
  • u is the initial velocity
  • t is the time

<h3>How to determine the final velocity</h3>

We'll begin by obtaining the final velocity of the person. This can be obtained as follow:

  • Initial velocity (u) = 10 m/s
  • Acceleration (a) = 2 m/s²
  • Time (t) = 5 s
  • Final velocity (v) = ?

a = (v – u) / t

2 = (v – 10) / 5

Cross multiply

v – 10 = 2 × 5

v – 10 = 10

Collect like terms

v = 10 + 10

v = 20 m/s

<h3>How to determine the distance travelled</h3>

The distance travelled can be obtained as follow:

  • Initial velocity (u) = 10 m/s
  • Final velocity (v) = 20 m/s
  • Acceleration (a) = 2 m/s²
  • Distance (s) = ?

v² = u² + 2as

Collect like terms

2as = v² - u²

Divide both sides by 2a

s = (v² - u²) / 2a

s = (20² - 10²) / (2 × 2)

s = 75 m

Thus, the distance travelled by the person is 75 m

Learn more about velocity:

brainly.com/question/3411682

Learn more about acceleration:

brainly.com/question/491732

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7 0
1 year ago
I NEED THE RIGHT ANSWER ASAP NO LINKS !!!<br> This is a Science question
murzikaleks [220]

Answer:

Independent variable

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2 years ago
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Suppose you look out the window of a skyscraper and see someone throw a tomato downward from above your window. your window is a
photoshop1234 [79]
Formula for height 
<span> r(t) = a/2 t² + v₀ t + r₀
</span><span> where 
</span><span> a = acceleration = -32 ft/sec² (gravity) 
</span><span> v₀ = initial velocity 
</span><span> r₀ = initial height 
</span><span> r(t) = -16t² + v₀ t + r₀
</span> <span>Tomato passes window (height = 450 ft) after 2 seconds: 
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</span><span> -16(4) + v₀ (2) + r₀ = 450 
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</span> r<span>₀ = 16(25) - 5v₀ 
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</span><span> 
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</span> <span>514 - 2v₀ = 400 - 5v₀
</span><span> 5v₀ - 2v₀ = 400 - 514
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</span><span> (initial height = 590 ft) </span>
4 0
3 years ago
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