What is the number of photons per second given off by a light bulb with a power of 100 Watts operating at an efficiency of 4.80%? Assume the wavelength of light to be 600 nm

A)

6.34 × 1018 photons/s
B)

5.42 × 1018 photons/s
C)

3.11 × 1018 photons/s
D)

25.3 × 1018 photons/s
E)

14.5 × 1018 photons/s


E

Physics & Space Science

You might also like to view...

Explain how Copernicus would account for the retrograde loops of superior planets

What will be an ideal response?

Physics & Space Science

As you stand by the side of the road, a car approaches you at a constant speed, sounding its horn, and you hear a frequency of 80.0 Hz

After the car goes by, you hear a frequency of 60.0 Hz. What is the speed of the car? Assume that he speed of sound in air is 343 m/s. A) 64 m/s B) 49 m/s C) 16 m/s D) 36 m/s E) 25 m/s

Physics & Space Science

On bracket ABCDEF, each y-direction force acts at the center of the bar segment to which it is applied (see figure). All turns of ABCDEF are 90o angles. The resultant moment at B (MB) for this parallel force system is (in N?m)

(A) 395j 1 1080k
(B) 415i 1 875k
(C) 485i 2 913k
(D) 2485i 1 913k

Physics & Space Science

The position of a mass that is oscillating on a spring is given by x = (17.4 cm) cos[(5.46 s-1 )t]. Write an expression for the acceleration of the particle as a function of time

What will be an ideal response?

Physics & Space Science