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Elza [17]
4 years ago
7

Which substance is a greenhouse gas that is emitted by human activities, is the most widespread, and remains in the air the long

est?
Physics
2 answers:
Stells [14]4 years ago
8 0

Answer:carbon dioxide

Explanation:carbon dioxide is a greenhouse gas emmited due to human activities

e-lub [12.9K]4 years ago
3 0

Answer:

I am not really sure, but it is probably Carbon Dioxide

Explanation:

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The record time for a Tour de France cyclist to ascend the 1100-m-high Alpe d'Huez is 37.5 min. The rider and his bike had a mas
Leni [432]

Answer

given,

height of Alpe d'Huez =  1100-m

time = 37.5 min

mass of the rider and his bike = 65 Kg

the metabolic power to ride = 700 W

U = m g y

U = 65 x 9.8 x 1100

U = 700700 J

since efficiency is 25%

E_{chem} = \dfrac{U}{e}

E_{chem} = \dfrac{700700}{0.25}

E_{chem} = 2802800

E_{chem} = \dfrac{2802800}{4.19 \time 10^3}

E_{chem} =668.9\ cal

b) P = \dfrac{E_{chem}}{t}

P = \dfrac{2802800}{37.5\times 60\ s}

P = 1245.68 W

8 0
3 years ago
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Why a drop of spirit on the hand feels colder than a drop of water at the same temperature​
brilliants [131]

Answer:

This is because spirit has a lower boiling point when compared to water

Explanation:

spirit has a lower boiling point when compared to water which means it has the capacity to pull more heat from your hand and also it can do this very fast. This is why our hand feels colder.

5 0
2 years ago
GIVING BRAINLIEST PLEASE HELP!!
OLga [1]
A. because I had this question yesterday.
3 0
3 years ago
The quantity that can be zero if body remains in motion for some time ​
SpyIntel [72]

Answer:

ok I think sooo

Explanation:

Velocity and displacement

3 0
2 years ago
When we give the speed of a car what frame of reference are we using?
Rus_ich [418]

Frame of reference, in simplest terms, describes the state of motion of the observer. The frame of reference may also be described by using a set of coordinates, time and motion. We formulate all our equations and solve them using the frame of reference.

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4 years ago
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