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
monitta
3 years ago
10

Ultraviolet light of wavelength of 350nm and intensity 1 W/m2 is directed at a potassium surface. Here energy of the photon is 1

nm and work function of potassium is 2.2 eV.
Physics
1 answer:
Cloud [144]3 years ago
4 0

Answer:

fsa

Explanation:

xasd

You might be interested in
A bicyclist is travelling at 25 m/s when he begins to decelerate at -4m/s2 . How fast is travelling after 5 seconds
Umnica [9.8K]

Initial velocity (Vi) = 25 m/s

acceleration (a) = -4 m/s^{2}

time interval (t) = 5 sec

let us assume that final velocity after 5 sec be Vf

As acceleration is constant, we can apply the the equation of motion with constant acceleration i.e. V_{f} = V_{i} + at

Hence, V_{f} = 25 +(-4)(5) = 25 -20 = 5 m/s

so, the velocity of bicyclist will be 5 m/s after 5 sec

7 0
3 years ago
A cannon at rest fires a 32.5 kg cannonball forward at 388 m/s. After firing, the cannon recoils at 7.42 m/s. What is the mass o
Bond [772]

Answer:

1700 kg

Explanation:

Let’s use conservation of momentum

32.5 * 388 = 7.42 * mc

mc = 1699.46

mc = 1700 kg

3 0
3 years ago
If you help me with the correct answer I will give you the brainlist
gulaghasi [49]

Answer:

1. A force is a push or pull upon an object resulting from the object's interaction with another object.  

Explanation:

6 0
3 years ago
A rocket-launching vehicle is moving forward at a constant velocity of 5 m/s. a cannon on the vehicle shoots a shell straight up
Readme [11.4K]
For any object thrown upwards where only the force of gravity is acting upon it, uses the following formula for the maximum height attained.

H= v²/2g, where g = 9.81 m/s²

There are two information of velocities are given. However, we use the 20 m/s information because this is the launch velocity. Hence, the solution is as follows:

H = (20 m/s)²/2(9.81 m/s²)
<em>H = 20.4 m</em>
5 0
3 years ago
Which statement bet explains the relationship between the electric force between two charged objects and the distance between th
Nataliya [291]
Coulomb's Law: Force = k x q1x q2 divided distance square
where k=9x10^9 , q1 and q2 are the charge
So if you distance is halved, your force is stronger by 4 times
and if you distance is doubled, your force is 1/4
Ask me again if you aren't clear :)

4 0
3 years ago
Other questions:
  • 1. This image shows the various forces acting on a block of rock situated on a rock slope. What does arrow 4 represent?
    13·2 answers
  • Engineers and science fiction writers have proposed designing space stations in the shape of a rotating wheel or ring, which wou
    9·2 answers
  • Each of the two coils has 320 turns. The average radius of the coil is 6 cm. The distance from the center of one coil to the ele
    12·1 answer
  • What is the electric field between two parallel plates if the electric potential difference between the plates is 24 V and the p
    12·2 answers
  • Which scenario is best illustrates the concept of illusory correlation? A.A person argues that it is dangerous to climb mountain
    13·2 answers
  • ________are muscles connected to the skeleton.
    6·1 answer
  • The symbol, "I" represents-<br><br> a. voltage <br> b. power<br> c. current<br> d. resistance
    8·1 answer
  • Why is the earth Round
    12·2 answers
  • Use Kirchoff first law and second law to derise the expression for the total resistancs​
    11·1 answer
  • Ok, what determines the color of light?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!