13) Compare primary and secondary succession of an ecosystem. What is the distinction between them?

1 answer:

6 0

Primary succession is the establishment of a community in an area with ni soil, while secondary succession is the establishment of a new community in an existing ecosystem that was disturbed by some catastrophic events.

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Can work be done on a system if there is no motion?

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Answer:

D) No, because of the way work is defined

Explanation:

The work done on an object is given by:

$W=Fd cos \theta$

where

F is the force applied on the object

d is the displacement of the object

$\theta$ is the angle between the direction of the force and the displacement

From the formula, we observe that if there is no motion involved, then the displacement of the object is zero:

d = 0

As a result, the product in the formula is also zero, therefore the work done will be zero as well.

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a parallel circuit has two 8.0 ohm resistors and a power source of 9.0 volts. Of a 12.5 ohm resistor is added to the circuit in

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Current = 9 / 28.5
current = .315...

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Boyle's Law states that when a sample of gas is compressed at a constant temperature, the pressure P and the volume V satisfy th

jarptica [38.1K]

Answer: The volume is decreasing at a rate of 80 cm3/min

Explanation: Please see the attachments below