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3 years ago

9

Unlike fossil fuels, biomass fuels _____.

2 answers:

dezoksy [38]3 years ago

7 0

the answer is B- are renewable resources

Vika [28.1K]3 years ago

4 0

Answer:

The correct answer is option , are renewable resources

Explanation:

Biofuels can be produced every year through the commercial crops. These crops after processing produces raw organic waste which can be used as manure or it can be put into some other sustainable use. Unlike fossil fuels which take millions of year to form, biofuels are easily convertible. Biomass fuels are grown on the earth crust and thus are product of living things

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An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50 s. If west is chosen as the pos

user100 [1]

Answer:

v = 0.5 m/s.

Explanation:

Total distance, d = 20 m + 20 m = 40 m

Total time taken, t = 30 s + 50 s = 80 s

The average speed of an object is the total distance divided by time taken. So,

$v=\dfrac{40}{80}\\\\=0.5\ m/s$

So, the average speed of the object is 0.5 m/s.

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3 years ago

A coil has an inductance of 8.00 mh, and the current in it changes from 0.200 a to 1.50 a in a time interval of 0.350 s. find th

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3 years ago

Alejandra weighs 225 newtons. how much work does she do against gravity when she climbs to a ledge at the top of a 15 meter clim

Bond [772]

Work=Fd
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= 3375 Nm

3 0

3 years ago

Drag the tiles to the correct boxes to complete the pairs.

marishachu [46]

Answer:

Air pollution---> smog

Water pollution---> eutrophication

Land pollution---> contaminated soil

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7 0

3 years ago

Suppose a car manufacturer tested its cars for front-en4 collisions by hauling them up on a crane and dropping then; from a cert

Brrunno [24]

Answer:

a

Generally from third equation of motion we have that

$v^2 = u^2 + 2a[s_i - s_f]$

Here v is the final speed of the car

u is the initial speed of the car which is zero

$s_i$ is the initial position of the car which is certain height H

$s_i$ is the final position of the car which is zero meters (i.e the ground)

a is the acceleration due to gravity which is g

So

$v^2 = 0 + 2g[H - 0]$

=> $v = \sqrt{ 2 g H}$

b

$H = 9.86 \ m$

Explanation:

Generally from third equation of motion we have that

$v^2 = u^2 + 2a[s_i - s_f]$

Here v is the final speed of the car

u is the initial speed of the car which is zero

$s_i$ is the initial position of the car which is certain height H

$s_i$ is the final position of the car which is zero meters (i.e the ground)

a is the acceleration due to gravity which is g

So

$v^2 = 0 + 2g[H - 0]$

=> $v = \sqrt{ 2 g H}$

When $v = 50 \ km/h = \frac{50 *1000}{3600} = 13.9 \ m/s$ we have that

$13.9 = \sqrt{ 2 g H}$

=> $H = \frac{13.9^2}{2 * 9.8}$

=> $H = 9.86 \ m$

6 0

3 years ago