Carson’s <span>“Silent Spring” influenced the
environmental movement </span>as it presents a view of nature compromised by synthetic pesticides,
especially DDT. The pesticides not only kill bugs but also threaten bird and
fish populations, and eventually sicken children. Much of the data and case
studies that Carson drew from weren’t new but she was the first to consolidate
them all for the general public and to draw blunt conclusions. This book was so
revolutionary that by the end of the twentieth century, it took its place on
lists of the best books of the century or even of all time.
Thermal energy quantifies the amount of heat present in the body and is calculated through the equation,
H = mcpdT
where H is the heat, m is the mass, cp is the specific heat, and dT is the temperature difference. If all things are constant, and the thermal energy is halved then, dT should also be reduced to half.
Answer:
The speed of the flow of water in the river is 4 m/s.
Explanation:
Given that,
Speed of man = 5 m/s
If this man swims crosses a specific river his speed is 3 m/s.
If he takes the minimum time to cross the river
Let the speed of flow of water be
We need to calculate the speed of the flow of water in the river
Using formula for velocity
Where, = velocity of swimmer
= relative velocity
= velocity of river
Put the value into the formula
Hence, The speed of the flow of water in the river is 4 m/s.
The answer is D.
<span>Planetary satellites vary greatly in size, from very small, to some that are larger than some planets.</span>