3 years ago

Which produces the most energy?

Physics

2 answers:

Marina86 [1]3 years ago

8 0

Answer:

Fossil Fuels

Explanation:

brilliants [131]3 years ago

6 0

Fossil fuels and natural gases

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A train travels 55km, south along a straight track in 34minutes. What is the train Ls average velocity in kilometers per hour

Westkost [7]

Answer:

96.5 km/h

Explanation:

The average velocity of the train is given by:

$v=\frac{d}{t}$

where

d is the displacement

t is the time taken

For this train, we have:

d = 55 km south (displacement is a vector, so we must also consider the direction)

$t= 34 min \cdot \frac{1}{60 min/h}=0.57 h$

Substituting into the equation, we find the average velocity:

$v=\frac{55 km}{0.57 h}=96.5 km/h$

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3 years ago

Which of the following statements correctly compares ultraviolet and visible light?

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I believe that the answer to this question is the letter A!

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4 years ago

A ball is thrown straight downward with a speed of 0.50 meter per second from a height of 4.0 meters. What is the speed of the b

Bond [772]

Assuming that reaching a height 0 doesn’t stop the ball, and that it accelerates at 9.8 m/s^2, the ball would be traveling at 0.5 + 0.7*9.8 = 7.36 m/s downwards.

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3 years ago

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Assume that a cloud consists of tiny water droplets suspended (uniformly distributed,

aev [14]

9.8 ms^-2 is acceleration

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4 years ago

Work out the kinetic energy of a 2.5 kg remote-controlled car that is moving at 2 m/s.

lbvjy [14]

Answer: 5 joules

Explanation:

mass=m=2.5kg

Velocity=v=2m/s

Kinetic energy=ke

ke=(m x v x v)/2

ke=(2.5 x 2 x 2)/2

Ke=10/2

Ke=5

Kinetic energy=5 joules

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3 years ago