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
FinnZ [79.3K]
3 years ago
13

imagine you are a teacher of a science class. a student brings in a newspaper article that claims the world will run out of ener

gy by the year 2050 because all the oil will be pumped out of the planet. the student is confused because she has learned in your class that energy can never be created or destroyed.how would you explain to her what "running out of energy" means in the article?
Physics
1 answer:
attashe74 [19]3 years ago
5 0
My opinion is that energy is not something that's made just like u feed ur self and u have energy u have to feed the earth and it will survive
You might be interested in
Small, slowly moving spherical particles experience a drag force given by Stokes' law: Fd = 6πηrv where r is the radius of the p
Dominik [7]

Answer:

Explanation:

At the time of a body achieving terminal velocity, the drag force becomes equal to the weight of the body less the buoyant force by the surrounding medium which can be represented by the following equation

\frac{4\pi\times r^3(d-\rho)}{3} =6\pi\times n\times r\times v

Where r is radius of the body , d is density of the material of the body σ is density of the medium and n is coefficient of viscosity of the medium and v is terminal velocity.

Simplifying

v = \frac{2\times r^2(d-\rho)}{9\times n}

Assuming the value of density of air as 1.225 kg/m³ and putting other given values in the formula we get

v = [tex]\frac{2\times (1.2\times10^{-5})^2(2182-1.225)}{9\times 1.8\times10^{-5}}[/tex]

v = 387 x 10⁻⁵ m/s

Terminal velocity = 387 x 10⁻⁵ m/s

Time taken to fall a distance of 100 m

= \frac{100}{387\times10^{-5}}

= 2.6 x 10⁴ s.

5 0
2 years ago
Which part of the larynx is the opening between the vocal folds where vibration occurs?
Lynna [10]

Glottis I believe is the answer.

5 0
3 years ago
A diamond is cut such that the angle between its top surface and its bottom surface is α. For α=45∘, find the largest possible v
Reil [10]

Answer:

i = 61 degree

Explanation:

Given,

\alpha =45^{o}

Now, by the snell's law

sin\theta_c=\frac{1}{n}\\sin\theta_c=\frac{1}{2.450}\\\theta_c=24.09^o

Now,

Sin i / sin r = n 2 / n 1

sin i / sin r (45 - 24.09) = 2.45 / 1

i = 60.97 degree

4 0
3 years ago
What are the three most important gases in the troposphere
taurus [48]
Nitrogen, oxygen, and argon
7 0
2 years ago
Select each example of a projectile
mafiozo [28]
Baseball, javelin, and maybe the clock but not sure on that... Just say baseball and javelin
4 0
3 years ago
Read 2 more answers
Other questions:
  • A moving cyclist sees traffic up ahead and begins slowing down with constant acceleration. After slowing down for 0.5\,\text{s}0
    14·1 answer
  • The term pharynx is the anatomical name for the
    8·1 answer
  • 50 g of liquid Y at 10 Celcius and 200 g of liquid Y at 40Celcius are mixed. Final temperature of the mixture is measured as 15
    12·1 answer
  • Will you travel in 3.0 minutes running at a rate of 6.0 m/s
    15·1 answer
  • g Larry , Moe, and Curly are pushing on a 25 kg crate. The crate is sitting on a horizontal floor, and the coefficient of kineti
    11·1 answer
  • A car is moving with a constant acceleration. At t = 5.0 s its velocity is 8.0 m/s and at t = 8.0 s its
    10·1 answer
  • I really need help with the graphs
    6·1 answer
  • The gradual temperature change from one season to the next is due to what? view attachment
    6·1 answer
  • An object that is speeding up is accelerating.<br> True<br> False
    13·1 answer
  • A tennis player tosses a tennis ball straight up and then catches it after 1.77 s at the same height as the point of release.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!