Answer: b. Salt lakes are formed when river bends are cut off.
Salt lakes are formed when water from water sourced gets accumulated in a shallow region and the supply of water is cut. These salt lakes are terminal which means water does not flow to other locations. Therefore, salt lakes are formed when river bends are cut off.
Answer:
the time required for the sound to travel between the whales 0.66 S.
Explanation:
As given in the problem, the velocity of sound wave (
) is governed by the equation
Given, 
and 
So for salt water, the velocity of sound wave (
) can be written as
As the whales are d = 1 Km or 1000 m apart from each other, so the time (
) required for the sound wave to travel this distance is given by
Miles per hour is velocity so I agree with you. Without seeing any associated question, though, it's hard to say. If the question is, find the average velocity, then velocity is correct. But since change in velocity is negative, that is also negative acceleration.
Answer:
Water can carry electricity
Explanation:
While pure water does not conduct electricity, ionized water does. It is common that water is ionized than is pure, unless it is purified. The dissolved ions in the water are what makes the water conduct electricity. Handling electric equipment with wet hands may lead to electrocution.
Answer:
diameter of transmission is 3.473 mm
Explanation:
given data
current = 300 A
total wire length = 1.0 m
voltage drop = 0.55 V
solution
as here Resistivity of copper is = 1.68 × 
ohm- m
so we get here resistance of wire that is
resistance = 
..............1
R = 
R = 1.774 × 
ohm
and now we get diameter of wire that is
R = 
.............2
d² = 
...............3
put here value
d² = 
d = 
d = 3.473 × m
d = 3.473 mm
so diameter of transmission is 3.473 mm
