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
quester [9]
3 years ago
7

The work function of titanium metal is 6.93 × 10⁻¹⁹ J. Calculate the kinetic energy of the ejected electrons if light of frequen

cy 1.216 × 10¹⁵ s⁻¹ is used to irradiate the metal.
Physics
1 answer:
vladimir2022 [97]3 years ago
6 0

Answer:

6.81*10^-20 J

Explanation:

The energy from the light does two things: it removes the electrons from the surface of the metal and the rest is taken up as kinetic energy by the electrons.

K.E = hf - work functionK.E. =  6.26*10^{-34} *1.216*10^{15}  - 6.93*10^{-19}  =  6.81*10^{-20} J

You might be interested in
A _________ is the time it takes for the Earth to rotate 360 degrees relative to the background stars.
Tom [10]
The answer is stellar day
8 0
2 years ago
Read 2 more answers
A wave has a length of 8 meters and a speed of 32 meters per second. What is the frequency of the wave
Naddika [18.5K]

Answer:

The frequency of wave is 4 hertz.

Explanation:

Given,

wave length = 8m

speed of sound ( v) = 32 m/s

frequency ( f) = ?

we know,

v = f × lambda

or, 32 = f × 8

or, f = 32/8

or, f = 4 Hertz.

5 0
3 years ago
How do u work out weight c and d and what r the answers
Ket [755]
The whole secret of things that are balanced on a pivot like this is:

The sum of all of the 'moments' is equal on both sides.

The moment of each weight is  (the weight) times (its distance from the pivot). 
If you add up those for each eight on one side, it has to be equal to the sum
of all the ones on the other side.

<u>2. a).</u> 
The moments on the right side are:  (4 x 0.15) and (1 x 0.40).
They add up to  (0.60 + 0.40) = 1.00

The only moment on the left side is  (C x 0.25).  Both sides have to be equal.

C x 0.25 = 1.00

Divide each side by 0.25, and you have    C = 4 N .

===========================================

<u>2. b).</u>
The only moment on the left side is  (5 x 0.40) = 2.00

The moments on the right side are (1 x 0.20) and (D x 0.30)
They add up to  (0.3D + 0.2).

Both sides have to be equal.    0.3D + 0.2 = 2.0

Subtract 0.2 from each side:      0.3D  =  1.8

Divide each side by 0.3:                D = 6 N
6 0
3 years ago
Based on the data table, find the acceleration and then predict the velocity at the time 3.5 seconds.
Gala2k [10]

The answer is B. Idk how to explain. Choose b.

3 0
3 years ago
Read 2 more answers
Blank is what is happening in the air or atmosphere at one time in one place a-weather b-climate
MAVERICK [17]
As I've said before, it's climate. Good luck.
5 0
3 years ago
Other questions:
  • Use Percentages Given that the molecular mass of magnesium
    13·1 answer
  • If two cars had the same engine, which delivered the same force to the wheels, but the first car was more massive than the secon
    11·1 answer
  • I am currently studying about spectrums, difraction Gratings, and many other spectrum. So my question is: What should the Spectr
    12·1 answer
  • An eagle has a forward force due to its wings of 6 N. The drag force of the air is 4 N backwards, and its lift force and force o
    13·1 answer
  • Help ASAP plssssssssss
    11·1 answer
  • Select the correct answer. x y 2.5 6.25 9.4 88.36 15.6 243.63 19.5 380.25 25.8 665.64 The table lists the values for two paramet
    12·1 answer
  • An austrain who lived in vienna who composed graetest music for waltz dance<br>​
    15·1 answer
  • A simple pendulum takes 2.00 s to make one compete swing. If we now triple the length, how long will it take for one complete sw
    11·1 answer
  • The third one pls help
    12·1 answer
  • A 150 N boy rides a 60 N bicycle a total of 200 m at a constant speed. The frictional force against the forward motion of the bi
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!