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
PilotLPTM [1.2K]
3 years ago
14

g A communication system operating at a power of 510 W produces electromagnetic radiation with a wavelength of 10.5 cm . Calcula

te the number of photons produced by the system per minute.
Physics
1 answer:
DiKsa [7]3 years ago
8 0

Answer:

The value is  N  =  2.69 *10^{26} \  photons

Explanation:

From the question we are told that

    The power is  P  =  510 \  W  

    The wavelength is  \lambda  =  10.5 \  cm  = 0.105 \  m

   

Gnerally the number of photon produced is mathematically represented as

             N  =  \frac{P  *  \lambda }{ h *  c  }

Here  h is the Planck's constant with a value   h  =  6.62607015 * 10^{-34} J \cdot s

          c is the speed of light with value  c =  3.0*10^{8 } \ m/s

So  

             N  =  \frac{ 510   * 0.105  }{ 6.62607015 * 10^{-34}   * 3.0 *10^{8} }

=>          N  =  2.69 *10^{26} \  photons

You might be interested in
A 1800 kg car moving south at 17.5 m/s collide with a 2800 kg car moving north. The cars stick together and move as a unit after
weqwewe [10]

Answer:

   v₀₂ = -2.67 m / s

Explanation:

Let's use the conservation of the moment, for this we define a system formed by the two cars.

Consider the north direction as positive and the subscript 1 will be used for car 1 and the subscript 2 for the second car

Initial instant. Before the crash

          p₀ = -m₁ v₀₁ + m₂ v₀₂

Final moment. Right after the crash

          p_f = (m₁ + m₂) v

           p₀ = p_f

           -m₁ v_{o1} + m₂ v_{o2} = (m₁ + m2) v_{f}

         v₀₂ = \frac{(m_1 +m_2) v }{m_2}+  \frac{m_1 v_{o1}  }{m_{1} }

 

let's calculate

          v₀₂ = \frac{(1800 +2800) 5.22 + 1800 (-17.5)}{2800}

          v₀₂ = -2.67 m / s

the negative sign indicates that the carriage moves in the opposite direction of the temperies

8 0
3 years ago
Beta particles cannot penetrate very far into solids because they _____. a. have low velocity b. have negligible mass c. have no
bonufazy [111]
Beta particle cannot penetrate theory for into the solid because they have lower velocity
4 0
3 years ago
Read 2 more answers
Physics , help please
zaharov [31]
Acceleration in a velocity vs time graph is just the slope at that point. The reason for that is because the definition of acceleration is the change in velocity per unit of time. In this case we want instantaneous, which is the derivative or tangent line at that point.

At 3s we can see the slope is 0, so that means his acceleration is zero. That means he was moving at a constant velocity

At 5s we can see that the slope is negative. And from 5s to 6s the change in velocity is -5m/s^2

At 7s we can see the slope is very positive. And from 7s to 8s the change in velocity is +15m/s^2

And again, at 9s the slope is 0 so his acceleration is also zero. He’s moving at a constant velocity

If you take the integral of a velocity vs time graph, you get position. So the area underneath a velocity vs time graph is the distance traveled. Anything below the x axis is considered negative distance. We need to take the area of a triangle and the area of two rectangles to find the distance.

So, let’s do the two rectangles first. From 8s to 9s it is a width of 1 and a length of 40. So the area would be 40 meters. Let’s do the second rectangle. From 7s to 8s it is a width of 1. Then the length goes up to 25. So the area is 25 meters.

Now the triangle, the base is 1 and the height is 15. Divide 15 in half to get 7.5 meters

25 + 40 + 7.5 = 72.5 meters
6 0
3 years ago
The force of a moving object is called momentum. The momentum of an object is proportional to its weight and speed. The more mom
dexar [7]

The force that a moving object exerts on another object upon colliding with it is rather the change in momentum divided by the amount of time elapsed during the collision.

F = Δp/Δt

F = force, Δp = change in momentum, Δt = elapsed time

Usually we say momentum is proportional to mass instead of saying momentum is proportional to weight. But sure, for two objects on the same planet, greater weight implies greater mass. Momentum is the product of mass and velocity:

p = mv

p = momentum, m = mass, v = velocity

So we have two identical cars on the same planet with one car traveling 30mph faster than the other. Let's say they both collide with a tree, both coming to a rest, and the collisions take the same amount of time to happen. The faster car loses a greater amount of momentum over the same amount of time, therefore delivering a greater force.

Choice B

4 0
3 years ago
Please help!
sergejj [24]
On a speed-versus-time graph, a straight line that slopes down toward
the right shows that the object is experiencing a constant deceleration.
3 0
4 years ago
Other questions:
  • How can neptune have more mass than uranus but a smaller diameter?
    6·1 answer
  • You are exiting a highway and need to slow down on the off-ramp in order to make the curve. It is rainy and the coefficient of s
    14·1 answer
  • At what distance above the surface of the earth is the acceleration due to the earth's gravity 0.785 m/s2 if the acceleration du
    8·1 answer
  • A force of 120.0 N is applied to a 3.00 kg block. What is the average acceleration of the block?
    14·1 answer
  • if the distance between two objects is decreased to one fourth the original distance, what happens to the force?
    11·1 answer
  • "KATZPSEF1 7.P.053.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Two black holes (the remains of exploded stars), separated by
    11·1 answer
  • An air bubble has a volume of 1.1 cm3 when it is released by a submarine 110 m below the surface of a freshwater lake. What is t
    7·1 answer
  • You and you friend are sitting on the floor in an empty room a distance, d, apart, and you both have an equal mass. Assume the o
    6·1 answer
  • A total charge of 9.0 mC passes through a cross-sectional area of a nichrome wire in 3.6s. The number of electrons passing throu
    9·1 answer
  • Please follow my sis on i.n.s.t.a.g.r.a.m Id - tehzz_13
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!