Researchers at the University of Georgia have evaluated trends in streamside forests in areas within roughly 400 feet of the sta
te’s streams and rivers. A decline in streamed forests is evident across much of the state. Between 1974 and 2005, 41 of the state’s 52 large watersheds showed declines in riparian forests. The greatest losses were in the Upper Chattahoochee, Middle Savannah, Upper Ocmulgee, and Middle Chattahoochee.
Stream-side or riparian land lies directly along rivers, streams, and other bodies of water and provide benefit to the aquatic ecosystems in ALL BUT ONE of the ways listed here.
A) helps to maintain stream temperatures
B) adds aesthetic value to the landscape
C) riparian vegetation traps and removes pollutants
D) produces organic matter that aquatic animals use as food
Stream-side or riparian land lies directly along rivers, streams, and other bodies of water and provide benefit to the aquatic ecosystems in ALL BUT ONE of the ways listed here.
A) helps to maintain stream temperatures
B) adds aesthetic value to the landscape
C) riparian vegetation traps and removes pollutants
D) produces organic matter that aquatic animals use as food
1 answer:
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The mass M1 is 7.8 kg
Explanation:
Block M1 is hanging on the string while block M2 is on the frictionless ramp.
We have to write the equations of motion for the two blocks.
- For M1, the only two forces acting on it are the force of gravity (downward) and the tension in the string T (upward). So we can write
where
is the mass of the block
is the acceleration of gravity
is the acceleration of the system
- For M2, the only two forces acting on it are the tension in the string T (acting up along the ramp) and the component of the gravity acting down along the ramp, . So the equation of motion is
where
is the mass of the 2nd block
is the angle of the ramp
In order for the two blocks to be in equilibrium, the acceleration must be zero:
So the two equations become:
Isolating T from the 1st equation,
And substituting into the 2nd equation, we can find the value of the mass :
Learn more about acceleration and forces:
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