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Fed [463]
3 years ago
5

Which event causes the formation of the electric current produced by the

Physics
2 answers:
Valentin [98]3 years ago
6 0

Answer:

C

Explanation:

Light with energy above a certain point can be used to knock electrons loose, freeing them from a solid metal surface, according to Scientific American.

photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material

Greeley [361]3 years ago
4 0

Answer:

The answer is C. Electrons are knocked off the surface that the light strikes by

"particles" of light

Explanation:

I took AP EX quiz.

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Which of the following is not true about centripetal force? Check all that
Vinvika [58]

Answer:

A, B Y E

Explanation:

4 0
3 years ago
You stand on a straight desert road at night and observe a vehicle approaching. This vehicle is equipped with two small headligh
zhuklara [117]

Complete Question

You stand on a straight desert road at night and observe a vehicle approaching. This vehicle is equipped with two small headlights that are 0.681 m apart. At what distance, in kilometres, are you marginally able to discern that there are two headlights rather than a single light source?Take the wavelength of the light to be 549 nm and your pupil diameter as 4.63 mm.  

Answer:

The distance is  z  = 4707.6 \ m

Explanation:

From the question we are told that

    The is distance between the headlight is d = 0.681 \ m

   The wavelength is  \lambda = 549 \ nm = 549 *10^{-9} \ m

    The  pupil diameter is  D  = 4.63 \ mm = 0.00463 \ m

Generally, we can mathematically evaluate the resolution of the eye as

            \theta  = \frac{1.22 *  \lambda }{D}

    substituting values

              \theta  = \frac{1.22 *  549 *10^{-9} }{0.00463}

              \theta  =  (1.45 *10^{-4} )^o

Now according to SOHCAHTOA rule  

         sin \theta  =  \frac{ d}{z}

Where z is  the distance at which the eye can discern the two head light

  given that the angle is very small sin \theta =  \theta

=>    \theta  =  \frac{ d}{z}

substituting values

     1.45*10^{-4}  =  \frac{ 0.681}{z}

=>   z  = \frac{0.681}{1.45 *10^{-4}}

=>    z  = 4707.6 \ m

   

6 0
4 years ago
Which contains the particles that are vibrating fastest?
Phantasy [73]

Answer:

Boiling water

Explanation:

3 0
3 years ago
Starting from rest, a truck accelerated at a rate of 2 m/s to the right for 25 seconds. How far will the truck travel during thi
lana [24]

Answer:

S= ?

V=2m/sec

t=25s

S=V*t

S=2*25

S=50m

8 0
4 years ago
If a 7500 N box is lifted by a forklift 8 meters , how much work was done?
Masteriza [31]

Answer:

W= f×d

= 7500×8

= 60,000 Joule

7 0
3 years ago
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