The brakes on a bicycle apply 95 N of force to the wheels. When the

Which example best shows how taxonomy can help us understand the evolutionary relationships among species?

marissa [1.9K]

<span>the example that best shows how taxonomy can help us understand the evolutionary relationships among species is: D-Binomial nomenclature can show the most recent ancestor of two species. by knowing the ancestors of the species we could predict the evolutionary process that happened throguh the genetic combination and mutation</span>

3 0

2 years ago

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Can someone solve under section two, numbers one and two?

Novay_Z [31]

1. Height of cube =9cm

mass of cube= 3645 g

volume= length ×breadth× height

as cubic volume so length breadth and heights are same so

volume =height ×height ×height

V =9cm×9cm×9cm= 729cm³

density =mass/ volume

density =3645g/729cm³

density= 5g/cm³

2. AS DENSITY = mass/volume

volume =mass/ desity

volume= 13.558g/(0.089g/l)

volume= 0.152L³

8 0

3 years ago

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To achieve a speed of 2 m/s, the bottle must be dropped at m. To achieve a speed of 3 m/s, the bottle must be dropped at m. To a

klio [65]

Answer:

$\begin{array}{l|l}\text{Speed}\; \mathrm{(m\cdot s^{-1})} & \text{Minimum Height\;(m)}\\\cline{1-2}\\[-1em] 2 & 0.204\\3&0.459\\4 & 0.815\\5 & 1.27 \\6 & 1.83\end{array}$ .

Assumptions:

The object is dropped in a free fall.
There's no air resistance.
The downward acceleration due to gravity is $\rm 9.81\;m\cdot s^{-2}$

Explanation:

Consider the "SUVAT" equation

$\displaystyle \frac{v^{2} - u^{2}}{2a} = x$ ,

where

$v$ is the final velocity,
$u$ is the initial velocity,
$a$ is the acceleration of the object, and
$x$ is the change in the object's position.

For example, if the bottle needs to achieve a speed of $v = \rm 2\; m\cdot s^{-1}$ by the time it reaches the ground,

$u = 0$ since the statement that the bottle is "dropped" implies a free fall.
$a = g = \rm 9.81\;m\cdot s^{-2}$ .

Apply the previous equation to find the minimum height, $x$ :

$\displaystyle x = \frac{v^{2} - u^{2}}{2a} = \rm \frac{\left(2\; m\cdot s^{-1}\right)^{2}}{2\times 9.81\; m\cdot s^{-2}} \approx 0.204\; m$ .

Replace the $v$ value and apply the formula to find the minimum height required to reach different final speeds.

8 0

3 years ago

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Si m1 es 6kg y m2 es 14kg y la masa de la polea es despreciable ¿Cual es la aceleración que adquiere el sistema?

Annette [7]

Answer:

Please transilate

Explanation:

I didn't get it

8 0

2 years ago

Help with 1 2 and 3 please

geniusboy [140]

1. Amperes, is the SI unit (also a fundamental unit) responsible for current.

2. $I = \frac{q}{t}$ Δq over Δt technically

Rearrange for Δq

I x Δt = Δq

1.5mA x 5 = Δq

Δq = 0.0075

Divide this by the fundamental charge "e"

Electrons: 0.0075 / 1.60 x 10^-19

Electrons: 4.6875 x 10^16 or 4.7 x 10^16

3. So we know that the end resistances will be equal so:

ρ = RA/L

ρL = RA

ρL/A = R

Now we can set up two equations one for the resistance of the aluminum bar and one for the copper: Where 1 represents aluminum and 2 represents copper

$\frac{p1L1}{A1} = \frac{p2L2}{A2}\\$

We are looking for L2 so we can isolate using algebra to get:

$\frac{A2(\frac{P1L1}{A1}) }{P2} = L2$

If you fill in those values you get 0.0205

or 2.05 cm

6 0

3 years ago