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Aleks04 [339]
3 years ago
9

Unlike fossil fuels, biomass fuels _____.

Physics
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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When the heart beats faster, blood vessels need to _____ more.<br> open <br> close move
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I'm pretty sure it is open more
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3. Differentiate between: (a) area and volume​
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Answer:

area is 2d volume is 3d

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Area refers to the size of two-dimensional surface. Volume refers to the size of a three-dimensional space.

8 0
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A seamount is an isolated land mass rising from the ocean floor.<br> a. True<br> b. False
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What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 22 km/h and the coef
Aleks [24]
First, let's put 22 km/h in m/s:

22 \frac{km}{h} \times  \frac{1000m}{1km}  \times  \frac{1h}{3600s}=6.11 \frac{m}{s}

Now the radial force required to keep an object of mass m, moving in circular motion around a radius R, is given by

F_{rad}=m \frac{v^2}{R}

The force of friction is given by the normal force (here, just the weight, mg) times the static coefficient of friction:

F_{fric}= mg \mu_{s}

Notice we don't use the kinetic coefficient even though the bike is moving.  This is because when the tires meet the road they are momentarily stationary with the road surface.  Otherwise the bike is skidding.

Now set these equal, since friction is the only thing providing the ability to accelerate (turn) without skidding off the road in a line tangent to the curve:

m\frac{v^2}{R} = mg \mu_{s} \\ \\ \frac{v^2}{R} = g \mu_{s} \\ \\R= \frac{v^2}{g \mu_{s}} \\ \\ R= \frac{6.11}{9.8 \times 0.37}=1.685m

3 0
3 years ago
A chemical reaction takes place in which energy is absorbed. Arrange the characteristics of the reaction in order from start to
Ira Lisetskai [31]
<h2>Answer</h2>

It will be single step endothermic reaction.

<h2>Expalantion</h2>

In the endothermic reaction, the reactants come together to convert to products by absorbing the heat from the external source. This reaction is explained is also known as one step reaction as reactants meet to get the transition stage and converts to the product. But in some reactions, the activation energy required to activate the reactants to get the transition stage to form products. For this, the reaction will have the steps as activation energy, reactant meet, transition stage and products form.

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3 years ago
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