What is the work function of cadmium metal if light with = 9.85×1014hz is necessary to eject electrons?

Physics

1 answer:

Alika [10]3 years ago

3 0

We use the Planck’s formula:

E = hv

where,

E = energy, h = planck’s constant = 6.6x10^-34 J s, v = frequency in Hz (Hz = 1 / s)

Subsituting the values to find for E:

E = (6.6×10^-34 J s) * 9.85×10^14 / s

E = 6.5x10^-19 J

You might be interested in

2. How important salad dressings in a salad?

Papessa [141]

Answer:

Well its what makes a salad taste good.

4 0

3 years ago

Read 2 more answers

Using the criteria you described in your previous answer, how would you compare solar power to fossil fuel power?

Scilla [17]

Solar power differ to fossil fuel power in that solar power is a much more optimal resource than fossil fuels

Solar power; however provides much more energy than fossil fuel power
Interestingly too, solar power resource can be used without releasing greenhouse gases compared to fossil fuels power
Infact, solar energy is the most reliable

<h3>What is renewable energy?</h3>

Renewable energy simply refers to energy that is not depleted when used. An example of such is solar power.

So therefore, solar power differ to fossil fuel power in that solar power is a much more optimal resource than fossil fuels

Learn more about renewable energy:

brainly.com/question/79953

#SPJ1

6 0

2 years ago

A stone is whirled at the end of a rope 25m long makes 8 complete revolution in two seconds find its centripetal force and centr

AnnyKZ [126]

Answer:

Fc = 1579 [N]; ac = 15790.9 [m/s^2]

Explanation:

To solve this problem we must use the following formula that relates the centripetal force to the speed of rotation and the radius of rotation, respectively.

$F_{c}=m*\frac{v^{2} }{r}$