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a_sh-v [17]
3 years ago
11

While trees are not the largest level in the pyramid of numbers, they are still the base for both the pyramids of biomass and py

ramids of energy.
True or False??
Physics
1 answer:
Oxana [17]3 years ago
6 0
It is true because <span>A pyramid of biomass is a representation of the amount of energy contained in biomass, at different trophic levels for a given point in time . The amount of energy available to one trophic level is limited by the amount stored by the level below. Because energy is lost in the transfer from one level to the next, there is successively less total energy as you move up trophic levels. Tree is a base as it provides food and energy.</span>
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Are fat fish more likely to have broad stripes than thin fish?
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H. Briefly describe the process taking place in the image below and comment on the
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3 years ago
Which of the following is an instantaneous speed?
Brilliant_brown [7]

Answer:

A: All of the above

Explanation:

The instantaneous speed of an object is simply the current seed of the object at any given time. The SI unit is m/S and it is a vector quantity.

Therefore, according to the given options, they all have SI units that are consistent with distance and time which makes them all an example of instantaneous speed.

5 0
3 years ago
A student does 686 J of work on an object in 3.1 seconds. What is the power output of the student?
Alenkinab [10]

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221.29 Watts

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5 0
3 years ago
At any angular speed, a certain uniform solid sphere of diameter D has half as much rotational kinetic energy as a certain unifo
Trava [24]

Answer:

d. 6/5 M.

Explanation:

let the angular velocity =  \omega

the radius of sphere (r) = \frac{D}{2}

moment of inertia of solid sphere I_s = 2/5 M(\frac{D}{2})^2

rotational K.E of solid sphere= \frac{1}{2}* I_s* \omega ^2

=  \frac{1}{2} * 2/5 M(\frac{D}{2})^2 * \omega^2

we represent the mass of hallow sphere= M_{hs}

moment of inertia of solid sphereI_{ss} = 2/3 M_{hs}(\frac{D}{2})^2

rotational K.E of hollow sphere= \frac{1}{2}* I_{ss} * \omega^2

= 1/2 *2/3 M_{hs}(\frac{D}{2})^2* \omega^2

NOW,the kinetic energy of solid sphere= 1/2 kinetic energy of hallow sphere

=1/2 [2/5 M(D/2)^2 ]\omega^2= 1/2 (1/2 (2/3 M_{hs}(D/2)^2 )\omega^2 }

2/5M= 1/3 M_{hs}

M_{hs} = 3(2/5M)

M_{hs} = 6/5 M

7 0
3 years ago
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