When two point charges are 2.0 cm apart, each one experiences a 1.0-n electric force due to the
other charge. if they are moved to a new separation of 8.0 cm, the electric force on each of them
is closest to

a) 1.0 n.
b) 4.0 n.
c) 16 n.
d) 0.25 n.
e) 0.063 n.

An airplane flies eastward and always accelerates at a constant rate. at one position along its path it has a velocity of 34.3 m/s, it then flies a further distance of 40100 m and afterwards its velocity is 47.5 m/s. find the airplane\'s acceleration and calculate how much time elapses while the airplane covers those 40100 m.

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.

In a good thermo flask the main cause of heat loss is