Explanation:
It is given that,
An electric dipole consists of charges +2e and -2e separated by 0.82 nm
Charge, 
Distance between charges, 
Electric field strength, 
(a) The magnitude of the torque on the dipole is given by :

When dipole moment is parallel to the electric field, 


(b) When the dipole is perpendicular to the electric field, 

(Since, p = q × d)


(c) When the dipole moment is anti parallel to the electric field, 

Since, 

Hence, this is the required solution.
Answer:
The initial velocity of the car is V1= 5.58 m/s = 20.12 km/h
Explanation:
m1= 1689 kg
v1= ?
m2= 2000kg
v2= 17 km/h = 4.72 m/s
by the conservation of quantity of movement :
m1*v1 = m2*v2
v1= m2*v2 / m1
v1= 5.58 m/s = 20.12 km/h
Answer:

where , F = Gravitational force
G = Gravitational constant
= mass of first object
= mass of second object
r = distance between the two objects
As Gravitational force is inversely related to the distance between two objects, lesser is the distance , more will be the gravitational force. As distance between C and D is more , the force shoulld have been less. That means the product of the masses of the objects C and D is more than the product of the masses of the objects A and B.
Answer: instantaneous speed.
Explanation: A highway speed limit posted as 90km/hr would be the instantaneous speed because it’s just the speed for that moment.