What does a black asphalt road become hotter than a white cement sidewalk in the same amount of sunlight?

1 answer:

7 0

The black means that it is a great emitter/absorber of the electromagnetic spectrum. The electromagnetic radiation is reflected of the white and absorbed nurture black meaning that the temperature of the black tarmac increases to that greater the the white

You might be interested in

The combustion of ethanol, C2H5OH(l), in oxygen to form carbon dioxide gas and water vapor is shown by which balanced chemical e

NemiM [27]

C2H5OH (l) + 3 O2 (g) = 2 CO2 (g)+ 3 H2O (l/g)

4 0

2 years ago

A charged isolated metal sphere of diameter 15 cm has a potential of 8500 V relative to V = 0 at infinity. Calculate the energy

Elan Coil [88]

Answer:

$u = 0.057 J/m^3$

Explanation:

Energy density near the surface of the sphere is given by the formula

$u = \frac{1}{2}\epsilon_0 E^2$

also for sphere surface we know that

$E = \frac{V}{R}$

R = radius of sphere

V = potential of the surface

now we have

$u = \frac{1}{2}\epsilon_0 (\frac{V^2}{R^2})$

now from the above formula we have

$u = \frac{1}{2}(8.85 \times 10^{-12})(\frac{8500^2}{0.075^2})$

$u = 0.057 J/m^3$

6 0

3 years ago

A particle moves on a straight line with velocity function v(t) = sin ωt cos2ωt. find its position function s = f(t) if f(0) = 0

Sauron [17]

The correct answer for this question is this one:Hope this helps answer your question and have a nice day ahead.
v( t)= sin( ωt) cos^2 ( ωt)

s(t) = ∫sin(ωt) cos^2 (ωt) dt

let cos(ωt) = u

-ωsin(ωt) dt = du

∫sin(ωt) cos^2 (ωt) dt = -(1/ω)∫u^2 du = -(1/ω)u^3 / 3 + const

s(t) = -(1/ω)cos^3(ωt) / 3 + const

s(0) = 0 => const = 1/(3ω)

s(t) = (1 - cos^3(ωt))/(3ω)

5 0

2 years ago

During which period did the first large herbivores and carnivores appear?

natali 33 [55]

The first large herbivores and carnivores appeared during the Mesozoic Era, which is divided into three periods-- Triassic, Jurassic and Cretaceous. The herbivores and and carnivores increased in size during the Jurassic Period. And some of the largest dinosaurs emerged during this period as well.

7 0

3 years ago

What do scientist mean when they use the term inertia?

enot [183]

The term inertia means a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, and less that state is changed by an external force

5 0

2 years ago

Read 2 more answers