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3 years ago

Building a new highway destroys habitats and can lead to soil erosion

2 answers:

7 0

Because by building a road, your removing land that was once occupied by nature and dividing the animals habitats. With trees being removed, it exposes soil to the climate more, reduces the woods capacity to absorb floods leaving the top layer being carried off, and dried in hotter climates. <span />

Karolina [17]3 years ago

4 0

Builsinf new highways will mean more nauteal land will be used up, this land will have been used previously by animals who will have made a home there.. AKA. a habitat ... To live there, when new highways are built habitats are destroyed and can lead to soil erosion from less nutrients entering the soil due to it being covered by gravel from the highway

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What is the kinetic energy of a baseball with a mass of 0.133 kg and moving at a speed of 28.7m/s

blsea [12.9K]

Answer:

54.7 J

Explanation:

kinetic energy formula

3 0

3 years ago

Type your answer...

ArbitrLikvidat [17]

Answer:

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3 years ago

A vector makes an angle of 30° with the positive x-axis.

kkurt [141]

Answer:

W = 112.58 N-unit

Explanation:

Given:

- Force F = 10 N

- Angle Q of force with x axis: 30 degrees

- distance to be moved d = 13 units along + x axis

Find:

Work Done by the force F:

Solution:

The work by force in positive x direction can only be done if the both the direction of distance traveled and direction of force are parallel vectors. Hence we compute the component of Force F in x direction F_x:

F_x = F*cos(Q)

F_x = 10*cos(30)

F_x = 8.66 N

Hence,

Work Done by force

W = F_x * d

W = 8.66 * 13

W = 112.58 N-unit

5 0

3 years ago

He starter motor of a car engine draws a current of 170 AA from the battery. The copper wire to the motor is 6.00 mmmm in diamet

sweet-ann [11.9K]

Answer:

129.2 C

0.33758239177 mm

Explanation:

n = Number density = $8.46\times 10^{28}\ electrons/m^3$

i = Current = 170 A

t = Time taken = 0.76 s

d = Diameter = 6 mm

Charge is given by

$q=it\\\Rightarrow q=170\times 0.76\\\Rightarrow q=129.2\ C$

The charge passing throught the motor is 129.2 C

Current density

$J=\dfrac{i}{A}\\\Rightarrow J=\dfrac{170}{\dfrac{\pi}{4}\times (6\times 10^{-3})^2}\\\Rightarrow J=6012520.07236\ A/m^2$

Drift velocity is given by

$v_d=\dfrac{J}{ne}\\\Rightarrow v_d=\dfrac{6012520.07236}{8.46\times 10^{28}\times 1.6\times 10^{-19}}\\\Rightarrow v_d=0.000444187357592\ m/s$

Distance traveled

$s=v_dt\\\Rightarrow s=0.000444187357592\times 0.76\\\Rightarrow s=0.00033758239177\ m=0.33758239177\ mm$

The electron traveled 0.33758239177 mm

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3 years ago

The visible spectrum of sunlight shows a range of colors from red to violet. This spectrum has numerous dark lines spread throug

Alexeev081 [22]

The correct answer is letter D

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3 years ago