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Yuki888 [10]
3 years ago
12

Molly is looking for a sustainable fuel source that doesn't require technical equipment to harness. She is concerned that trees

take too long to replace through reforestation. What alternative should she consider?
Physics
2 answers:
notka56 [123]3 years ago
8 0

Answer:

She can consider using agricultural waste or dried dung.

Explanation:

No doubt, biomass has become a crucial source of energy to the society, with almost 90% of the households in rural area now relying on biomass for energy. Biomass has become a great option for household heating and cooking. It is locally available and abundant. It is a clean type of fuel, unlike fossil fuels and it somehow helps in cleaning our environment as it traps carbondioxide. Some common types of biomass include dried dung, agricultural waste, or even charcoal.

elixir [45]3 years ago
7 0

Answer:

She can harness Food Waste

Explanation:

Molly can harness the Biomass-based fuels. This type of fuel provide a great alternative since they can be generated from crops, tires, computers, and pretty much anything else other than nuclear waste.

One particular avenue being explored is the use of food waste, which is readily available and can be converted into biofuel through various processes.

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Which type of thermal energy transfer does a wrapping of cotton or plastic reduce the most? O A. Radiation O B. Conduction O C.
Step2247 [10]

Answer: Translation

Explanation:

Apex

Thanks

7 0
4 years ago
Read 2 more answers
Help with this question.....​
mariarad [96]

Answer:

g_{moon}=1.67 [m/s^{2} ]

Explanation:

The weight of some mass is defined as the product of mass by gravitational acceleration. In this way using the following formula we can find the weight.

w =m*g\\

where:

w = weight [N]

m = mass = 0.06 [kg]

g = gravity acceleration = 10 [N/kg]

Therefore:

w=0.06*10\\w=0.6[N]

By Hooke's law we know that the force in a spring can be calculated by means of the following expression.

F=W\\F = k*x

where:

k = spring constant [N/m]

x = deformed distance = 6 [cm] = 0.06 [m]

We can find the spring constant.

k= F/x\\k=0.6/0.06\\k=10 [N/m]

Since we use the same spring on the moon and the same mass, the constant of the spring does not change, the same goes for the mass.

F_{moon}=k*0.01\\F = 10*0.01\\F=0.1[N]

Since this force is equal to the weight, we can now determine the gravitational acceleration.

F=m*g_{moon}\\g=F/m\\g = 0.1/0.06\\g_{moon} = 1.67[m/s^{2} ]

6 0
3 years ago
A 1200 kg car accelerates from 13 m/s to 17 m/s. find the change in momentum of the car.
mixas84 [53]
P=4800kgm/s
As
p=mΔv
where p is momentum, m is mass and v is velocity
Given values is
m =1200kg
Δv= 17m/s-13m/s=4m/s
Now
p=mΔv
p=(1200kg)*(4m/s)
p=4800kgm/s


8 0
2 years ago
A bag is dropped onto the street from the roof of a 32 m high building. How long does it take for the bag to fall?
gizmo_the_mogwai [7]

Answer:

Explanation:

h = ½at²

t = √(2h/a)

t = √(2(32)/9.8)

t = 2.5555062... 2.6 s

4 0
3 years ago
a block suspended from a spring. The spring is stretch 0.5 m. If the spring constant is 500 N/m, what is the weight of the block
zhenek [66]

Answer:250N

Explanation:

Spring constant(K)=500N/m

extension(e)=0.5m

Weight=k x e

Weight=500 x 0.5

Weight=250N

5 0
3 years ago
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