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Fed [463]
3 years ago
5

Oil and gas were formed millions of years ago from what

Physics
1 answer:
loris [4]3 years ago
3 0
Over millions of years, layer after layer of sediment and other plants and bacteria were formed. ... Even higher heat or biomass made predominantly of plant material produced natural gas.
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A sports car engine delivers 150 kW to the driveshaft with a thermal efficiency of 20%. The fuel has a heating value of 35 000 k
Andreyy89

Answer:600 kW

Explanation:

Given

Power delivered P=150 kW

Fuel heating value q=35,000 kJ/kg

thermal Efficiency \eta =\frac{Power}{Heat}

0.2=\frac{150}{35,000\times \dot{m}}

where, \dot{m} =mass\ flow\ rate\ of\ fuel

\dot{m}=\frac{150}{35,000\times 0.2}

\dot{m}=0.0214 kg/s

For an Engine

q\dot{m}=P+Q_r , where Q_r=heat\ rejected

Q_r=q\dot{m}-P

Q_r=750-150=600 kW

3 0
3 years ago
How are scientific theories different than laws or hypotheses?
Gnoma [55]

Answer: Chilling with my homies

Chicken wings, Chicken wings

Hotdog and baloney

Chicken and macaroni

Chillin' wit mah homiiieees

Chicken wing chicken wing

Hot dogs and balogna

Chicken and macaroni

Chilling with mah Chilling with mah

Chicken chicken wing chicken chicken wing

Chicken chicken chicken chicken chicken wing

Chicken chicken chicken chicken wing

Chicken wings, Chicken wings

Hotdog and baloney

Chicken and macaroni

Chillin' wit mah homiiieees

Chicken wings, Chicken wings

Hotdog and baloney

Chicken and macaroni

Chillin' wit mah homiiieees homiiieeees

Chicken wings, Chicken wings

Hotdog and baloney

Chicken and macaroni

Chillin' wit mah homiiieees

Chillin' wit mah

Explanation:

im sorry i had to do it now pls give me brainliest thank u and have a blessed day:)

9 0
3 years ago
Read 2 more answers
An engineer is designing a runway for an airport. Of the planes that will
ziro4ka [17]

Answer:

704m

Explanation:

Given, initial velocity, u=0m/s and final velocity v=65m/s

Acceleration a=3m/s 2

If d be the allowed length for the runway.

Using formula v*2 −u*2 =2aS

(65)*2−0*2 =2(3)d

⟹ d=65*2 /6=704.16∼704m

8 0
3 years ago
If an object has a large momentum, how easy is it to stop, and why?
podryga [215]
It is dificult to stop an object with a lot of momentum becuase of inertia with means that a moving object will want to keep moving and a stationary object wil want to stay stationary and the larger the momentum of the moving object the harder it will be to stop
7 0
3 years ago
at certain times the demand for electric energy is low and electric energy is used to pump water to a reservoir 45 m above the g
Readme [11.4K]

The mass of water that must be raised is 5.25\cdot 10^7 kg

Explanation:

Since the process is 70% efficiency, the power in output to the turbine can be written as

P_{out} = 0.70 P_{in}

where P_{in} is the power in input.

The power in input can be written as

P_{in} = \frac{W}{t}

where

W is the work done in lifting the water

t = 3 h = 10,800 s is the time elapsed

The work done in lifting the water is given by

W=mgh

where

m is the mass of water

g=9.8 m/s^2 is the acceleration of gravity

h = 45 m is the height at which the water is lifted

Combining the three equations together, we get:

P_{out} = 0.70 \frac{mgh}{t}

Where

P_{out} = 150 MW = 150\cdot 10^6 W

And solving for m, we find:

m=\frac{Pt}{0.70gh}=\frac{(1.50\cdot 10^6)(10800)}{(0.70)(9.8)(45)}=5.25\cdot 10^7 kg

Learn more about power:

brainly.com/question/7956557

#LearnwithBrainly

3 0
4 years ago
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