PHYSICS MIDDLE SCHOOL

In a car, 75 percent of the chemical energy of gasoline is lost as thermalenergy. If the gasoline contains 1,000 kilojoules of energy, how much
of that energy is used to actually move the car? Record your answer in
kilojoules.

Answers

Answer 1
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Related Questions

1. calculate agni's average speed during the race.2. the average speed of agni within the first 20 km ( number 1 in the graph ) can be calculated using the slope of the graph :distance : time = 20 km : 1/2 hour = 40 km/hourB. 1. what quantities can be identified in the graph?    2. explain the meaning of the horizontal lines in the graph.     3. calculate agni's velocity during the race.     4. calculate the speed reached by agni at the end of the race.on independence day, there was a bicycle race organized in a neighborhood. an observer took notes on the progress of one participant, named agni. who finally won the race...  the collected data is shown in " graph of agni's bicycle track " as shown below
Explain why the gravitational acceleration of any object near earth is the same matter what was the mass of the object
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suface winds on earth are primarily caused by differences in...?
The Earth belongs to the group of rocky planets that orbits between the sun and the asteroid belt. Place these planets in order, starting closest to the sun. A) Mercury-Earth-Venus-Mars B) Mercury-Venus-Earth-Mars C) Mercury-Venus-Earth-Saturn D) Venus-Mars-Earth-Jupiter

100 meters toward the shore in 25 seconds

Answers

Answer:

The speed of a turtle is 4m/s

Explanation:

speed = distance/time

distance = 100m

time = 25s

s = 100/25

= 4m/s

Which of these is NOT an example of work? A. Holding a heavy book
B. Pushing a wheelbarrow
C. Lifting weights

Answers

The correct answer is A. Holding a heavy book.

In this case, there is not a displacement of the system and you must remember that work is force times displacement.
the correct answer is actually A

What happens to a reflection of light that has struck a surface?A) It bounces off.
B) It becomes absorbed.
C) It gets transmitted.
D) It gains energy.

Answers

Answer:

A) It bounces off.

Explanation:

Bouncing back of light into the same medium is known as reflection of light

As per law of reflection we know that light incident on the surface at a given angle with respect to the normal then the angle of reflected light with the normal will be same

angle of incidence of light = angle of reflection of light

Also we know that incident light, reflected light and normal always lie in the same plane

So we can say that here correct answer will be

A) It bounces off.

Answer:

The answer is A) It bounces off

Explanation:

Refraction bends and Reflection bounces off. (I just took the test).

How does secondhand smoke affect children?It increases their asthma rates.
It increases their attention span.
It increases their learning ability.
It increases their chance of obesity.

Answers

Answer:

It increases asthma rates

Explanation:

A student pushes a 40-N block across the floor for a distance of 10 m. How much work was done to move the block? Question 3 options: 4 J 40 J 400 J 4,000 J

Answers

Answer:

The work done to move the block is 400 Joules.

Explanation:

It is given that,

Force acting on the block, F = 40 N

The distance covered by the block, d = 10 m

We need to find the work done by the block. The work done by an object is given by :

W=F* d

W=40\ N* 10\ m

W = 400 Joules

So, the work done to move the block is 400 Joules. Hence, the correct option is (B) "400 J".

40x10=400 J 

Work = Force x distance 

The East African rift is an example of what

Answers

The East African rift is an example of a divergent tectonic plate boundary that is developing. Though it is still currently a narrow zone, it is currently experiencing the process of splitting into two different tectonic plates. Over time, the supposed narrow zone can split into a larger one.
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