The electrostatic forces between two charges are
F = (9 x 10⁹) x (charge-1) x (charge-2) / (distance between them)² .
The charges in this question are each (1 x 10⁻⁶ Coulomb).
Force = (9 x 10⁹) (1 x 10⁻⁶) (1 x 10⁻⁶) / (4.0)
= (9 x 10⁹) (1 x 10⁻¹²) / (4.0)
= 0.00225 Newton .
-- The force on each mass is the same.
Each mass is acted on by a force of 0.00225 newton,
directed either toward the other one or away from it.
-- If the charges both have the same sign, then the forces
are repulsive ... driving the masses apart.
-- If the charges have different signs, then the forces
are attractive ... drawing the masses together.
-- For as far as you've gone in copying this question ... asking
only for the forces between the charged objects ... you don't
need to know their masses, or about friction with the table, or
any of that stuff. None of that has any effect on the forces
between the charged masses.
You'll need that information when you get down to the next part
of the question, where it's probably going to ask you for the
acceleration of each mass due to the electrostatic force on it.
You know the force on each mass now. All you have to remember
is F = (mass) x (acceleration) , and grind it out.
Don't you dare post the next part on Brainly ! You have everything
you need to do it yourself now, and you'll learn a lot more that way.
Answer:
773.25 Hz
Explanation:
Concept : In an open organ pipe in fundamental mode of vibration
wave length of wave λ = 2L
where L is length of the pipe
frequency = velocity of sound / λ
Given values: fundamental frequency = 288 Hz
fluid is air. velocity of sound = 340 m/s
⇒ 288 = 340/2L
⇒L = 59.02 cm
The point to be noted is if the pipe is filled with helium initially at the same temperature, there would be change in the sound velocity .Then, frequency of note produced will also be changed .
We know that velocity of sound is inversely proportional to square root of molar mass of gas
velocity of sound in air / velocity of sound in helium = Square root of (Molar mass of Helium/ molar mass of air)
Now, frequency = velocity of sound / λ
= 912.75 / (2 x 0.5902)
= 773.25 Hz
Answer:
If magnitude of vector A is less than magnitude of vector B then its x-component will be also less
Explanation:
In first case magnitude can never be negative -ve sign shows the direction only so it is incorrect statement.
The magnitude of any vector can never be less than its component because component of vector is found with the multiplication of sine and cos angle which values lies between 0 and 1 so after multiplication it gives less value than the vector
If magnitude of any vector is less then its x component will also be less because magnitude of component is dependent on the magnitude of vector
Answer:
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2222222222<span>Joy is planning to purchase a sweater that costs $30 dollars at her local department store. The sweaters are on sale for 20% off. Which steps are needed to find the sale price of the sweater?</span>22222
