Any kind of frequency, including the angular kind, is closely involved with 
time. Still, for some unknown reason,you've given us no time information 
whatsoever ... a peculiar decision on your part, since we can be sure that 
it's right there, inexorably intertwined with the part of the question that you 
DID copy and share with us.  
Furthermore and moreover, for one with no prior experience with simple 
harmonic motion, the many symbols in this question such as ' d ', ' a ', 
' << ', ' d₂ ', and ' a₂ ' would be of no help at all to guide him toward a 
solution.  On the contrary, he would conclude that the question itself 
had been posted by some alien life form.
To sum up:  Come back and post the drawing that goes along with the 
question, make sure you have presented all of the information that the 
question includes, and then we'll talk.
        
             
        
        
        
Answer:
The correct answer is = 1.6
Explanation:
Density of water = 1000kg/m³ = d₁
Mass of brick = 4kg = m
Density of brick = 2.5 g/cm³ = 2.5 × 1000 =2500 kg/m³ = d₂
Volume of brick = m/d₂ = 4/2500 =16/10000 = 0.0016 L = v
Buoyant Force = v × d₁ × g          (g= acceleration due to gravity =9.8m/s²)
= 0.0016 × 1000 × 9.8 = 15.68 Newtons
By the Archimedes' Principle, the buoyant force is equal to the weight of the liquid displaced by an object.
Weight of the water displaced=Buoyant Force
=Mass of water displaced × g,
as weight = mass × acceleration due to gravity
15.68= mass of brick × 9.8
15.68/9.8 =Mass of water displaced
1.6 kg = Mass of water displaced
 
        
             
        
        
        
It is itself. This question does not make sense.
        
             
        
        
        
<h3>Answer;</h3>
- <em>The spheres develop opposite charges.
</em>
 - <em>Electrons move from Sphere A to Sphere B.
</em>
 - <em>The spheres are charged through induction.</em>
 
<h3><u>Explanation;</u></h3>
- <u><em>When a negatively charged rod is placed near two neutral metal spheres, the spheres will develop opposite charges, because the neutral metal spheres have both negative and positive charges. </em></u>From the basic law of electrostatics unlike charges attracts and like charges repel.
 - Thus, <em><u>the sphere will develop opposite charges, electrons will move from Sphere A to sphere B,</u></em> hence we say that the spheres will be charged by induction such that sphere A will acquire a positive charge while sphere B will acquire negative charge.