All categories

2 years ago

HELP ASAP !!

Physics

1 answer:

olasank [31]2 years ago

8 0

This question involves the concept of Colomb's Law and electrostatic force.

The electrostatic force will be "0.2 N".

<h3>COLOMB'S LAW:</h3>

According to Colomb's Law, every charge exerts an electrostatic force on the other charge, which is directly proportional to the product of the magnitudes of both the charges and inversely proportional to the square of the distance between them.

$F=\frac{kq_1q_2}{r^2}$

where,

F = electrostatic force
k = Colomb's constant = 9 x 10⁹ N.m²/C²
q₁ = magnitude of first charge
q₂ = magnitude of second charge
r = distance between charges

In case of +2 C charges:

q₁ = q₂ = 2 C
r = ?
F = 0.1 N

Therefore,

$0.1\ N = \frac{(9\ x\ 10^9\ N.m^2/C^2)(2\ C)(2\ C)}{r^2}\\\\r^2=\frac{(9\ x\ 10^9\ N.m^2/C^2)(2\ C)(2\ C)}{0.1\ N}\\\\r^2=3.6\ x\ 10^{11}\ m^2$

Now, for the second case:

F = ?
q₁ = 2 C
q₂ = 4 C
r² = 3.6 x 10¹¹ m²

Therefore,

$F=\frac{(9\ x\ 10^9\ N.m^2/C^2)(2\ C)(4\ C)}{3.6\ x\ 10^{11}\ m^2}$

Learn more about Colomb's Law here:

brainly.com/question/9774180

You might be interested in

(HELP PLEASEE) An object is 40.0 cm from a

PilotLPTM [1.2K]

Answer:

-18

Explanation:

acellus use the formula of magnification and watch your minus sign

6 0

3 years ago

For what frequencies does their sound at the speakers produce constructive interference?

valentinak56 [21]

<span>You need to find the path difference. That is, how much further must sound waves from the more distant speaker travel than the close speaker, to reach the mike.
Use Pythagoras to find the distance of the further speaker: it is √(2.00²+4.50²)=4.924m so the path difference is 4.924-4.50=0.424m.
You will get constructive interference when this path difference is an integer number of wavelengths, because the waves will arrive at the mike in phase.
The speed of sound is 340m/s so the lowest frequency that will produce an antinode at the mike is the one that makes 0.424=λ
v=fλ so f=v/λ
f=340/0.424=801Hz.
The next one will be when 0.424m = 2λ => λ=0.212m
f=340/0.212=1602Hz
and so-on according to f=340n/0.424 where n is an integer.

For destructive interference the path difference must be (n-½)λ because that will make the waves arrive at the mike 180° out of phase.
f=340(n-½)/0.424</span>

5 0

3 years ago

A cat runs and jumps from one roof top to another which is 5 m away and 3 m below. Calculate the minimum horizontal speed with w

icang [17]

ThIs is the same type of problem
find out the time value
3 = 1/2*a*T^2
6/10 = t^2
t = 0.77 seconds
and the distance is given 5 m
thus speed ,= distance/time
speed = 5/0.77
= 6.45 m/s

6 0

3 years ago

What maximum force do you need to exert on a relaxed spring with a 1.2×104-n/m spring constant to stretch it 6.0 cm from its equ

Elena L [17]

Answer:

Maximum force will be equal to 720 N

Explanation:

We have given that spring constant $k=1.2\times 10^4N/m$

Maximum stretch of the spring x = 6 cm = 0.06 m

We have to find the maximum force on the spring

We know that spring force is given by

$F=kx=1.2\times 10^4\times 0.06=720N$

So the maximum force which is necessary to relaxed the spring will be eqaul to 720 N

6 0

4 years ago

(1) Viewers of Star Trek hear of an antimatter drive on the Starship Enterprise. One possibility for such a futuristic energy so

malfutka [58]

Solution :

The relationship between the strength of magnetic field and the radiusof a charged particle's path is obtained through Newton's second law, which is given by :

F = ma

F = qvB and $a=\frac{v^2}{r}$