1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
miskamm [114]
4 years ago
7

The energy expenditure value of traveling by car is 3.6 MJ/passenger-kilometer. For one person making a trip of 1000 km, if a ga

llon of gasoline contains 120 MJ, approximately how many gallons of gasoline would be required
Physics
1 answer:
mash [69]4 years ago
8 0

Answer:

30[gal] would be requiered.

Explanation:

The consumption ratio is given by the following expression:

\frac{3.6[MJ]}{[1pass-km]}

To find the amount of energy needed we must multiply the ratio by the number of passengers, in this way the unit passenger-kilometer is removed from the denominator.

\frac{3.6[MJ]}{[1 pass-km]}*1[pass-1000km]\\\\ = 3600[MJ]

1 gal = 120 [MJ]

  x    = 3600[MJ]

x = 30 [gal]

You might be interested in
A. Water has many unique properties. Identify a property of water and explain why this property makes water vital to living orga
rosijanka [135]

a) It can dissolve other substances and has high specific heat capacity.

b) Pressure is transferred equally in all directions

c) F=14*0.04/0.02=28 N

d) I'd expect that it will sink cause weight will pull it to the bottom

e) Because the buoyant force is stipulated by difference between pressures in the top and bottom surfaces of a body.

f) Because this force increases in denser liquids: F_b=\rho gV, where rho is density.

g) Q=Av, where v - speed, A - area. With the same flow rate v=Q/A, so larger area decreases speed and vice versa.

8 0
3 years ago
In an extrasolar planetary system containing a single planet, the parent star is measured to move about its center of mass every
Mademuasel [1]

Answer:

Orbital Time Period is 24 years

Explanation:

This can be explained by the definition of time period.

Time period can be defined as the time taken by an object to complete one cycle, here, time taken to complete one revolution.

Also, we know that an extra solar planet which is also called as an exo planet is that planet which is outside our solar system and orbits any star other than our sun. The system in consideration is extra solar system with a single planet.

Therefore, the time taken by the parent star to move about its mass center is the orbital time period that is 24 years.

4 0
3 years ago
Two people are pushing a couch from opposite sides. one person pushing to the right with a force of 3 N. the other person pushes
skelet666 [1.2K]

letter a because 4N to the left +3N to the right = 4N left minus 3N left as you change the direction of 3N then you also change the plus into minus. the direction will always favour to which of the direction is bigger

8 0
3 years ago
Need some help please
11Alexandr11 [23.1K]

Answer:

x^2\neq -\frac{5}{13}

First option

Explanation:

<u>Operations with functions </u>

Given two functions f, g, we can perform a number of operations with them including addition, subtraction, product, division, composition, and many others .

We have

f(x)=20x^3-7x^2+3x-7

g(x)=-13x^2-5

We are required to find

\displaystyle \frac{f}{g}(x)

We simply divide f by g as follows

\displaystyle \frac{f}{g}(x)=\frac{20x^3-7x^2+3x-7}{-13x^2-5}

We know rational functions may have problems if the denominator can be zero for some values of x. We must find out if there are such values and exclude them from the domain of the new-found function. We must ensure

-13x^2-5\neq 0

or equivalently

x^2\neq -\frac{5}{13}

Thus the first option is correct

Note: Since x^2 is always a positive number (for x real), our function does not really have any restriction in its domain

8 0
3 years ago
Define heat according to molecular theory .​
yawa3891 [41]

I think ....... the answer will be ......

like a theory

7 0
3 years ago
Other questions:
  • A baseball is hit high into the upper bleachers of left field. Over its entire flight the work done by gravity and the work done
    8·1 answer
  • Which types of changes observe the law of conservation of mass?
    8·1 answer
  • An electric motor is connected to a battery. The current flows through brushes to a commutator ring, which is attached to an ele
    15·2 answers
  • g initial angular velocity of 39.1 rad/s. It starts to slow down uniformly and comes to rest, making 76.8 revolutions during the
    6·1 answer
  • A 60-kilogram sled is coasting with a constant velocity of 10 m/s over smooth ice. It enters a rough stretch of ice 6.0 m longs
    15·1 answer
  • Suppose you have a car with a battery that applies 12.5 V to the starter.
    6·1 answer
  • Thanks + BRAINLIST <br><br> Please need correct answer asappp
    11·1 answer
  • The average speed of a car that drives 140 kilometers in 2 hours
    7·2 answers
  • Is this right? Please help me
    10·1 answer
  • What are some causes of an increase in GHG's in the atmos? (will give brainless) 12.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!