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3 years ago

15

Because energy transfer is not 100% efficient across trophic levels, a maximum of about ____________% of energy and biomass avai

lable at one trophic level is available at the next.

1 answer:

DanielleElmas [232]3 years ago

6 0

10% is about how much travels down from level to level

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The wavelength of sound wave is 30 m. Frequency is 7 Hz. What is the wave speed

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Answer:23hz

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3 years ago

A hoop (I = MR2) of mass 3 kg and radius 1.1 m is rolling at a center-of-mass speed of 11 m/s. An external force does 842 J of w

Scilla [17]

Answer:

$v_f = 20 m/s$

Explanation:

Since the hoop is rolling on the floor so its total kinetic energy is given as

$KE = \frac{1}{2}mv^2 + \frac{1}{2} I\omega^2$

now for pure rolling condition we will have

$v = R\omega$

also we have

$I = mR^2$

now we will have

$KE = \frac{1}{2}mv^2 + \frac{1}{2}(mR^2)\frac{v^2}{R^2}$

$KE = mv^2$

now by work energy theorem we can say

$W = KE_f - KE_i$

$842 J = mv_f^2 - mv_i^2$

$842 = 3(v_f^2) - 3\times 11^2$

now solve for final speed

$v_f = 20 m/s$

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2 years ago

During convection of air currents,

pav-90 [236]

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3 years ago

Read 2 more answers

Compare and contrast speed and velocity.

vlabodo [156]

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2 years ago

A nonuniform linear charge distribution given by λ = bx, where b is a constant, is located along an x axis from x = 0 to x = 0.2

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Answer:

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Explanation:

Check the attached file for the explanation

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3 years ago