Answer:
The velocity of sound is greatest in option a water option be here option c vacancy option d metals.
Explanation:
Force (F)=Mass (m)×Acceleration (a).
∴F=ma.
∴F=(2kg)×(3ms2).
∴F=6kgms2=6 Newton. =6N.
The duck is not carried by the wave motion because <span>Waves move energy through a medium but don't transfer particles. So when the waves pass by a duck floating on a lake, the duck just bobs up and down, but remains in its place.</span>
The voltage in a circuit is given by the expression , V = IR , Where I is the current inbthe circuit and R is the resistance of circuit.
In this case I = V/R
In this circuit voltage V = 10 volt
Resistance of the circuit = 20 ohm
So current , I = 10/20 = 0.5 amperes
So if a 10-volt battery is placed across a 20-ohm resistance, the current will be 0.5 amperes