If the reference point is stationary, you can ensure that the distance between the point you are studying and the reference point is constant.
Explanation:
Using the formula;
2x = vt
x is the distance up from the ocean floor the submarine is
v is the speed of sound in water
t is the time
Given
t = 2.3s
v = 1490m/s
Required
how high (approx) up from the ocean floor is the submarine x
From the formula;
x = vt/2
x = 1490(2.3)/2
x = 745(2.3)
x = 1,713.5m
Hence the submarine is 1713.5m high up from the ocean floor
Answer:
Time taken = 444.4s
Explanation:
how long = the time taken
and from the definition of speed,we have that :
Average speed = distance ( m)
_____________
time (s)
therefore,Time = distance (m) / average speed (m/s)
Time = 8000/18
Time = 444.4 (s)
Answer:
Non-renewable energy comes from sources that will run out or will not be replenished for thousands or even millions of years. Most sources of non-renewable energy are fossil fuels. Fossil fuels were created as the remains of marine creatures decayed millions of years ago, under huge amounts of pressure and heat. Most fossil fuels are burned to create energy and electricity. Coal, above, is a type of rock that is a fossil fuel.
Explanation:
Cited: https://www.nationalgeographic.org/encyclopedia/non-renewable-energy/