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bagirrra123 [75]
4 years ago
11

Pros and cons of plastic bags

Physics
2 answers:
IceJOKER [234]4 years ago
4 0
Plastic bags are easy & cheap to make in vast quantities but are extremely bad for the environment because the pollution made from making the bags lead to the cause of climate change.
Darina [25.2K]4 years ago
4 0

Answer:

Producing plastics benefits the economy by employing workers and helps the economy of every state by spending billions of dollars on shipping plastic products.

Explanation:

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astra-53 [7]

Answer:

D. provide the most compelling evidence of cause-and-effect relationships.

Explanation:

3 0
3 years ago
The lesser the mass, the greater the acceleration for the given value of force. Why does this happen?
Tju [1.3M]
Newtons law states F=ma
so F/m=a
in addition it makes logical sense the lighter an object the easier it is to accelerate its velocity form 0 to some quantity 
5 0
3 years ago
A 1200 kg car accelerates from rest for 45 meters in 6.0 seconds. What is the net force on the car?​
Alja [10]

Answer:

Explanation:

At first, you have to get the acceleration value from the given data.

s=ut+\frac{1}{2}at^{2}

s= 45m

u= 0 m/s

t = 6s

a = ?

45 = 0+ 0.5 × a × 6²

45 = 0.5 × 36 × a

45 = 18a

a = 2.5 m/s²

Now, you can use F=ma equation

F = ?

m = 1200kg

a = 2.5 m/s²

F = 1200 × 2.5

F = 3000 N

8 0
4 years ago
The quantity of heat Q that changes the temperature L1Tof a mass mof a substance isgiven by Q = cmt:T, where c is the specific h
White raven [17]

Answer:

a) Q = 80,000 cal

b) Q = 100,000 cal

c) Q = 540,000 cal

d) Q = 720,000 cal

Explanation:

a)1 kg from 0⁰ Ice to 0⁰ water, the heat produced is latent heat of fusion

Q_{l}  = ML_{f} = 1 * 80

Q_{l} = 80 kCal = 80,000 cal

b) 1 kg of O°C ice water to 1 kg of 100°C boiling water

Specific heat capacity, c =  1000cal/kg.C

Q_{c} = mc \delta T\\Q_{c} = 1 * 1000 * (100 - 0)\\Q_{c} =100000 cal

c) 1 kg of 100°C boiling water to 1 kg of 100°C steam

Latent heat of vaporization is needed for this conversion

Q_{v} = ML_{v} \\L_{v} = 540 kCal/kg\\Q_{v} =1* 540 \\Q_{v} = 540 kCal = 540000 cal

d)  1 kg of O°C ice to 1 kg of 100°C steam.

Q = Q_{L} + Q_{c} + Q_{v}

Q = 80,000 + 100,000 + 540,000

Q = 720,000 cal

7 0
4 years ago
.2, A car starting from rest has an acceleration of
riadik2000 [5.3K]

Answer: 2.5 m/s and 6.25 m

Explanation:

u = 0

a = 0.5 m/s²

t = 5 s

v = u + at

=  0 + 0.5 × 5

= <u>2.5 m/s</u>

s = ut + 1/2 at²

= 1/2 × 2.5 × 5

=<u> 6.25 m</u>

7 0
4 years ago
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