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
hammer [34]
3 years ago
11

Hospital x-ray generators emit x-rays with wavelength of about 15.0 nanometers (nm), where 1nm=10−9m. what is the energy of a ph

oton of the x-rays?
Physics
1 answer:
Aneli [31]3 years ago
8 0
<span>A photon is characterized by either a wavelength, denoted by λ or equivalently an energy, denoted by E. There is an inverse relationship between the energy of a photon (E) and the wavelength of the light (λ) given by the equation: E=hc/λ E=hc/λ where h is Planck's constant and c is the speed of light. The value of these and other commonly used constants is given in the constants page. h = 6.626 × 10 -34 joule·s c = 2.998 × 108 m/s By multiplying to get a single expression, hc = 1.99 × 10-25 joules-m E=hc/λ (6.626*10^-34 J*s) x (2.998×10^8m/s)/ 1.5*10^-8 m = 1.32*10^-17 J</span>
You might be interested in
A variable that should not change throughout the experiment is a(n):
Natalka [10]
The answer is control variable
7 0
3 years ago
Fill in the blanks.<br>In what way are speed and velocity different?​
IrinaVladis [17]
Volocity can be the wave length of the speed like the volume.
8 0
3 years ago
Read 2 more answers
Two equipotential surfaces surround a +3.10 x 10-8-c point charge. how far is the 290-v surface from the 41.0-v surface?
MrMuchimi
 T<span>he equation to be used here to determine the distance between two equipotential points is:
V = k * Q / r 

where v is the voltage of the point, k is a constant, Q is charge of the point measured in coloumbs and r is the distance. 
In this case, we can use ratio of proportions to determine the distance between the two points. in this respect, 

Point 1: 
V = k * Q / r = 290
r = k*Q/290 ; kQ = 290r

Point 2:
V = k * Q / R = 41
R = k*Q/41
from equation 10 kQ = 290r
R = 290/(41)= 7.07 m 
The distance between the two points then is equal to 7.07 m.


</span>
8 0
3 years ago
If a point charge is located at the center of a cylinder and the electric flux leaving one end of the cylinder is 20% of the tot
zheka24 [161]

The portion of the flux leaves the curved surface of the cylinder is 60%.

<h3 /><h3>What are electrons?</h3>

The electrons are the spinning objects around the nucleus of the atom of the element in an orbit.

If a point charge is located at the center of a cylinder and the electric flux leaving one end of the cylinder is 20% of the total flux leaving the cylinder.

If 20% of the flux leave from one end, then another 20% will leave from another end.

So, the net flux through curved surface is

100 -20 -20 = 60%

Thus, the total flux  leaves the curved surface of the cylinder is 60%

Learn more about electrons.

brainly.com/question/1255220

#SPJ1

5 0
1 year ago
A billiard ball of mass m moving with speed v1=1 m/s collides head-on with a second ball of mass 2m which is at rest. What is th
Soloha48 [4]

Answer:

The velocity of mass 2m is  v_B = 0.67 m/s

Explanation:

From the question w are told that

     The mass of the billiard ball A is =m

     The initial speed  of the billiard ball A = v_1 =1 m/s

    The mass of the billiard ball B is = 2 m

    The initial speed  of the billiard ball  B = 0

Let the final speed  of the billiard ball A  = v_A

Let The finial speed  of the billiard ball  B = v_B

      According to the law of conservation of Energy

                 \frac{1}{2} m (v_1)^2 + \frac{1}{2} 2m (0) ^ 2 = \frac{1}{2} m (v_A)^2 + \frac{1}{2} 2m (v_B)^2

              Substituting values  

                \frac{1}{2} m (1)^2  = \frac{1}{2} m (v_A)^2 + \frac{1}{2} 2m (v_B)^2

Multiplying through by \frac{1}{2}m

                1 =v_A^2 + 2 v_B ^2 ---(1)

    According to the law of conservation of Momentum

            mv_1 + 2m(0) = mv_A + 2m v_B

    Substituting values

            m(1)  = mv_A + 2mv_B

Multiplying through by m

           1 = v_A + 2v_B ---(2)

making v_A subject of the equation 2

            v_A = 1 - 2v_B

Substituting this into equation 1

         (1 -2v_B)^2 + 2v_B^2 = 1

         1 - 4v_B + 4v_B^2 + 2v_B^2 =1

          6v_B^2  -4v_B +1 =1

          6v_B^2 -4v_B =0

Multiplying through by \frac{1}{v_B}

          6v_B -4 = 0

            v_B = \frac{4}{6}

            v_B = 0.67 m/s

4 0
3 years ago
Other questions:
  • A battery charges capacitor A until the potential difference between the two conductors of the capacitor is V.
    9·2 answers
  • What does the law of conservation of energy state?
    11·1 answer
  • A trombone has a variable length. When a musician blows into the mouthpiece and causes air in the tube of the horn to vibrate, t
    11·1 answer
  • A tetrahedron has an equilateral triangle base with 25.0-cm-long edges and three equilateral triangle sides. The base is paralle
    12·1 answer
  • PLEASE PLEASE HELP AND PUT A REAL ANSWER ;-;. ALSO WILL GIVE BRAINLEST!!
    10·2 answers
  • The drawing shows a plot of the output emf of a generator as a function of time t. The coil of this device has a cross-sectional
    15·1 answer
  • What would make oppositely charged objects attract each other more?
    8·1 answer
  • 5. Graph A below plots a race car's speed for 5 seconds. The car's rate of acceleration is 6 m/s^2
    15·1 answer
  • A brick sliding across a smooth floor has a coefficient of static friction of s=0.23 and a coefficient of kinetic friction of k=
    12·2 answers
  • An object weighing 2.7n while in air and 1.2n when completely immersed in water.find the relative density of the object
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!