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
IceJOKER [234]
2 years ago
11

In his explanation of the threshold frequency in the photoelectric field, Einstein reasoned that the absorbed photon must have t

he minimum energy required to dislodge an electron from the metal surface. This energy is called the work function (φ) of that metal. What is the longest wavelength of radiation (in nm) that could cause the photoelectric effect in W, where φ = 4.30 × 10−19 J?
Physics
1 answer:
Doss [256]2 years ago
5 0

Answer:

4.6×10^-7 m or 0.46nm

Explanation:

From

Wo= hc/λ

Where:

Wo= work function of the metal

h= planks constant

c= speed of light

λ= wavelength

λ= hc/Wo

λ= 6.6×10^-34 × 3×10^8/4.30×10^-19

λ= 4.6×10^-7 m

You might be interested in
a bus travels 4 km due north and 3 km due west going from bus station a to bus station b. the magnitude of the bus displacement
ladessa [460]

Answer:

5km

Explanation:

Magnitude of displacement is found by getting the resultant. Resultant is same as the bypotenuse hence

R=\sqrt {{x^{2}+y^{2}} where x is the displacement in west direction and y is displacement in North direction. Substituting x with 3km and y with 4 km then

R=\sqrt {{3^{2}+4^{2}}=5km

4 0
2 years ago
Two of the types of infrared light, ir-c and ir-a, are both components of sunlight. their wavelengths range from 3000 to 1,000,0
NikAS [45]
The energy of a light wave is calculated using the formula
E = hc/λ
h is the Planck's constant
c is the speed of light
λ is the wavelength
For the ir-c, the range is
<span>6.63 x 10^-34 (3x10^8) / 3000 = 6.63 x 10 ^-29 J
</span>6.63 x 10^-34 (3x10^8) / 1000000 = 1.99 x 10^-31 J

For the ir-a, the range is
6.63 x 10^-34 (3x10^8) / 700 = 2.84 x 10^-28 J
6.63 x 10^-34 (3x10^8) / 1400 = 1.42 x 10^-28 J
6 0
3 years ago
Read 2 more answers
Using clay electric rates, how much does it cost to watch Netflix for 4 hours on a smart tv?
OverLord2011 [107]

Answer: TVs cost between $0.0015 and $0.0176

Explanation:

7 0
2 years ago
A good description of magnets would be, "Magnets are
madreJ [45]
B-things that can attract iron.
5 0
3 years ago
Balancing carefully, three boys inch out onto a horizontal tree branch above a pond, each planning to dive in separately. The th
VikaD [51]

Answer:

what is this a riddle lol it breaks when he either jumps or lands

Explanation:

3 0
3 years ago
Other questions:
  • The magnitude of the electric current is inversely proportional to the _____ of the circuits in R2D2.
    11·1 answer
  • A race car exerts 18,344 N while the car travels at an acceleration of 92.54 m/s2. What is the mass of the car? (Use the formula
    12·2 answers
  • If you adjusted the frequency to be lower than the resonant frequency, would the voltage have been leading ahead of or lagging b
    14·1 answer
  • If "38 %" of the light passes through this combination of filters, what is the angle between the transmission axes of the filter
    5·1 answer
  • The electric potential V in the space between two flat parallel plates 1 and 2 is given (in volts) by V = 2200x2, where x (in me
    15·1 answer
  • can the suns gravitational pull on the earth affect the temperature as the gravitational pull could suck us in like a black hole
    7·1 answer
  • What three ways are molecules used when they are stored for energy?
    11·1 answer
  • What is the weight of a 63.7 kg person? ?N
    5·2 answers
  • What most directly determines an object's state of matter? (Please help)
    11·1 answer
  • As a train accelerates away from a station, it reaches a speed of 4.9 m/s in 5.4 s. if the train's acceleration remains constant
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!