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nordsb [41]
3 years ago
11

9. Does a blackbody radiator emit light waves? Explain.

Physics
1 answer:
Yakvenalex [24]3 years ago
4 0

Answer:

"A blackbody is an object that absorbs all of the radiation that it receives(that is,it does not reflect any light,nor does it allow any light to pass through it and out the other side).The energy that the blackbody absorbs heats it up,and then it will emit its own radiation."

Explanation:

Risk*

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A car on a level road turns a quarter circle ccw. You learned in Chapter 8 that static friction causes the centripetal accelerat
pav-90 [236]

Answer:

Zero

Explanation:

As we know that the force and the motion direction should always be perpendicular to each other due to which the work is done by static friction be zero

Therefore

F.dcos(theta) = F.d cos(90) = 0

Hence, the work done by static friction is zero

Therefore the same is to be considered

3 0
3 years ago
Which statement correctly identifies a difference between the function of most arteries and veins?
olasank [31]

Answer:a

Explanation:

8 0
3 years ago
A car travels at a constant speed of 40 miles per hour down the street for around 0.25 hours. What is its acceleration?
forsale [732]
It’s acceleration is 0 if it was traveling at a constant speed
5 0
3 years ago
Read 2 more answers
The voyage of the H.M.S what important because
yaroslaw [1]

C. Physicalist chemist and biologist conducted experience in gather collection that changed existing scientific knowledge about the oceans

Explanation:

The voyage of Her Majesty's Ship was highly important because it furnished scientists with rich evidence about a lot of phenomenon under study and this changed existing scientific knowledge about the ocean.

  • H.M.S II was an expedition to study and map the ocean floor using some sophisticated and newer devices.
  • It was through this expedition that the theory of plate tectonics was modified and became a theory
  • The bathymetry of the ocean floor was also carried out.
  • The mid-oceanic ridge was discovered through the expedition.
  • Some rare species of organisms were also obtained from the ocean floor in this process.
  • The H.M.S second expedition after the world war was very crucial and helped furthered scientific knowledge about the oceans.

learn more:

Sea floor spreading brainly.com/question/9912731

#learnwithBrainly

7 0
3 years ago
A car’s velocity as a function of time is given by Vx (t) = α.t + β.t 2 , where α= 3m/s and β= 0.1m/s 3 . Calculate the average
s344n2d4d5 [400]

The definition of average acceleration allows to find the result for the average acceleration in the given time interval is:

          a_{average}= 1.5  \ \frac{m}{s^2}

Instantaneous acceleration is defined as the derivative of velocity with respect to time.

           a =   \frac{dv}{dt}

Where a is the acceleration, v the velocity and t the time.

They indicate that the speed of the car is given by the relation.

          v = α t + β t²

With α = 3 m / s and β = 0.1 m / s³

Let's make  the derivative.

           a = α + 2β t

Let's substitute

            a = 3 + 2 0.1 t

Average acceleration is the change in velocity in the time interval.  

          a_{average} = \frac{\Delta v}{\Delta t }

Let's find the velocity at the indicated time.

For t = 5 s

         v₅ = 3 + 0.1 5²

         v₅ = 5.5 m / s

For t = 10 s

          v₁₀ = 3 + 0.1 10²

          v₁₀ = 13 m / s

Let's calculate the average acceleration.

           a_{average} = \frac{13 - 5.5 }{ 10 - 5 }\\

           a_{average}= 1.5 \  m/s^2

In conclusion using the definition of mean acceleration we can find the result for the mean acceleration in the given time interval is:

           a_{average} =  1.5 m / s²

Learn more here: brainly.com/question/20057878

7 0
3 years ago
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