4 years ago

This is the process of retaining radiation without reflecting it.

Physics

2 answers:

Bezzdna [24]4 years ago

6 0

Absorption is the correct term.

Alex_Xolod [135]4 years ago

4 0

Answer:

Absorption

Explanation:

IDK

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dolphi86 [110]

Answer:

$r(t)=(\frac{10t^3}{3}+t)i+(-sint+t+1)j+(\frac{-cos2t}{4}+\frac{1}{4})k$

Explanation:

a(t)=20t i+sin(t) j +cos(2t) k

v(t)= $\int\limits^a_b {a(t)} \, dt$

= $(10t^2+c_1)i+(-cost+c_2)j+\frac{sin2t}{2}k$ ---------------eqn 1

given v(0)=i

i= $c_1i+(-1+c_2)j+(0+c_3)k$

$c_1=1$ $c_2=1$ $c_3=0$

from equation 1

V(t)= $(10t^2+c_1)i+(-cost+c_2)j+\frac{sin2t}{2}k$ ----------eqn 2

now r(t)= $\int\limits^a_b {v (t)} \, dt$

$(\frac{10t^3}{3}+t+c_1)i+(-sint+t+c_2)j+(\frac{-cos2t}{4}+c_3)k$

given r(0)=j

0i+1j+ok = $c_1i+c_2j+(\frac{-1}{4}+c_3)k$

$c_1=0$ $c_2=0$ $c_3 = \frac{1}{4}$

$r(t)=(\frac{10t^3}{3}+t)i+(-sint+t+1)j+(\frac{-cos2t}{4}+\frac{1}{4})k$

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3 years ago

The acceleration due to gravity is lower on the Moon than on Earth. Which one of the following statements is true about the mass

VashaNatasha [74]

Answer:

Mass is the same, weight is less.

Explanation:

We know the following equation

W = mg

where m is the mass of the astronaut which is constant and W is the weight. As g (the acceleration due to gravity) is a variable which it is directly proportional to the W, if g is lower on the Moon than on Earth, then W is lower on the Moon than on Earth.

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4 years ago

Scientist have been able to determine the composition of Earth's layers by:

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D is the correct answer

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3 years ago

Which of the following statements best describes the second law of

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Answer:

Explanation:

Heat flows from hot to cold to lower the temperature of hot areas and increase temperature of cold areas. The end result is that the 2 areas have the same temperature, thus increasing entropy.

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4 years ago

Which statements about acceleration are true? <br> You can chose 2 or more answer

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Answers A, C, and D.

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