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2 years ago

Which of the following allows natural selection and evolution to occur?

Physics

2 answers:

leonid [27]2 years ago

6 0

Answer:

D. differences in the characteristics of individual trees

Explanation:

Natural selection and evolution can only occur if there are differences in the characteristics of individual organisms. Organisms with advantageous adaptations, such as deep roots, are more likely to survive and reproduce than organisms without the advantageous adaptations. Continuous natural selection of one trait over another causes organisms to evolve so the advantageous trait eventually becomes more common in a population.

Black_prince [1.1K]2 years ago

4 0

Answer:

i think its B

Explanation:

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If you were creating a presentation that would cover the different types of muscles in the body, which groups of muscle would yo

diamong [38]

It would be best to cover the cardiac, smooth, and skeletal muscles! =)

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2 years ago

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A force of 500 N is exerted on a baseball by the bat for 0.001 s. What is the change in momentum of the baseball?

GarryVolchara [31]

Answer: Δp = F*Δt = 500N*0.001s = 0.5Ns

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3 years ago

Two open organ pipes, sounding together, produce a beat frequency of 8.0 Hz . The shorter one is 2.08 m long. How long is the ot

s344n2d4d5 [400]

Answer:

The length of the longer pipe is L = 2.30 m

Explanation:

Given that:

Two open organ pipes, sounding together, produce a beat frequency of 8.0 Hz . The shorter one is 2.08 m long.

How long is the other pipe?

From above;

The formula for the frequency of open ended pipes can be expressed as:

$f = \dfrac{nv}{2L}$

where n = 1 ( since half wavelength exist between those two pipes)

v = 343 m/s and L = 2.08 m

Thus, the shorter pipe produces a frequency of :

$f = \dfrac{1*343}{2*2.08}$

$f = \dfrac{343}{4.16}$

$f =82.45 \ Hz$

Also; we know that the beat frequency was given as 8.0 Hz

Then,

The lower frequency of the longer pipe = ( 82.45 - 8.0 )Hz

The lower frequency of the longer pipe = 74.45 Hz

Finally;

From the above equation; make Length L the subject of the formula. Then,

The length of the longer pipe is L = $\dfrac{nv}{2f}$

The length of the longer pipe is L = $\dfrac{1*343}{2*74.45}$

The length of the longer pipe is L = $\dfrac{343}{148.9}$

The length of the longer pipe is L = 2.30 m

6 0

3 years ago

Why would an asteroid have a difficult time of holding a probe or person?

babymother [125]

The asteroid's mass is so small that it has a much smaller acceleration
due to gravity than Earth has. That means that things weigh very very little
on the surface of an asteroid. It also means that the "escape velocity" from
an asteroid is very low, and orbital velocities are very low at any distance off
of its surface.

As an extreme example: You know how when you walk, you naturally rise up
on the toes of one foot while you reach out with the other one to take a step ?
All of those motions are what you learn in Earth's gravity. On an asteroid, that
natural action of rising up on your toes might launch you into a long, high arc,
like a golf ball. Or it might even exceed escape velocity and you'd sail up off
of the asteroid and never come back down to it.

5 0

2 years ago

A 0.500 kg piece of granite is heated 21.5 Â°C by a sitting in the sun and thereby absorbs 8.5 kcal of heat. What is the specifi

Elena L [17]

Answer:

Specific heat of the granite rock = 3387.05 Jkg⁻¹°C⁻¹

Explanation:

We have heat required, H = mcΔT

Mass of granite, m = 0.500 kg

Specific heat of granite, c = ?

Change in temperature, ΔT = 21°C

Heat energy, H = 8.5 kcal = 8500 x 4.184 = 35564 J

Substituting

H = mcΔT

35564 = 0.500 x c x 21

c = 3387.05 Jkg⁻¹°C⁻¹

Specific heat of the granite rock = 3387.05 Jkg⁻¹°C⁻¹

6 0

3 years ago