Answer : The correct answer is 74.83 m/s .
The kinetic energy is energy possessed by any mass which is moving or have some speed . It is product of mass and velocity . It is expressed as :
Where KE = kinetic energy in J or m = mass in Kg v = speed in m/s²
Unit of KE is Joules (J) .
Givne : KE = 2100 J mass = 0.75 kg v = ?
Plugging value in KE formula =>
Dividing both side by 0.375 kg =>
Answer:
C - Cl = Polar (Chlorine has an electronegativity of 3.16 and Carbon has 2.55. The difference between the two determines if the bond is polar or non polar, and the difference is 0.61 which means its polar)
Br - Br = Non-polar (Diatomic molecules are non-polar)
N - O= Non-polar ( The electronegativity difference is 0.4, making it non-polar)
P - Cl= Polar (The difference in electronegativity between them is 0.97, making it polar)
