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
dimulka [17.4K]
3 years ago
8

As the proton approaches the uranium nucleus, the repulsive force slows down the proton until it comes momentarily to rest, afte

r which the proton moves away from the uranium nucleus. How close to the uranium nucleus does the proton get
Physics
1 answer:
Klio2033 [76]3 years ago
3 0

Answer:

 r^2 = \frac{ 2 k  \ Ze^2}{ 2m}

Explanation:

For this exercise we must use the principle of conservation of energy

starting point. The proton very far from the nucleus

          Em₀ = K = ½ m v²

final point. The point where the proton is stopped (v = 0)

          Em_f = U = q V

where the potential is

          V = k Ze / r²

Let us consider that all the charge of the nucleus is in the center, therefore r is the distance from this point to the proton that is approaching

Energy is conserved

          Em₀ = Em_f

           ½ m v² = e (k \frac{Ze}{r^2})

          r^2 = \frac{ 2 k  \ Ze^2}{ 2m}

with this expression we can find the closest approach distance (r)

You might be interested in
Within a vacuum, the property to all electromagnetic waves is their
bezimeni [28]
The answer is D) Velocity
7 0
3 years ago
In science, a hypothesis must be true.
Anon25 [30]
I would believe that this is false.
6 0
3 years ago
A ball is thrown up in the air. When it falls back down and reaches the ground, it's final downward velocity is 8.0 m/s. What wa
hram777 [196]
Given : Time taken to reach the maximum height t=3 s a=−g=−10m/s
2


The initial velocity of the ball can be calculated by,
Using v=u+at
∴ 0=u−10×3 ⟹u=30 m/s

Using S=ut+
2
1
​
at
2

∴ S=30×3+
2
1
​
×(−10)×3
2
=45m
8 0
3 years ago
Read 2 more answers
Which figure represents the electric field lines of two positive point charges?
Naddik [55]

Electric field lines of positive charges are always radially outwards

So here all field lines must have tendency to move out radially as well as two field lines never intersects with each other

So here field lines also do not intersects with each other

So overall the figure C is perfectly representing the field lines of two positive charges as these lines are not intersecting and also originating from two positive charges.

So answer must be

<u><em>FIGURE C</em></u>

7 0
3 years ago
In a prototype helicopter, a jet is expelled out of the helicopter’s side to make it turn in the opposite direction. If the jet
Nimfa-mama [501]

Answer:

The radius is (0.04m) meters

Explanation:

F = mv^2/r

m is the mass of the helicopter = m kg

v is the speed of the helicopter = 20 m/s

F is force supplied by the jet = 10,000 N

10,000 = m×20^2/r

r = 400m/10,000 = 0.04m

The radius is (0.04m) meters

6 0
3 years ago
Other questions:
  • Two square air-filled parallel plates that are initially uncharged are separated by 1.2 mm, and each of them has an area of 190
    9·1 answer
  • The gear motor can develop to 1/2 hp when it turns at 300 rev/min. If the shaft has a diameter of 1/2 in. determine the maximum
    11·1 answer
  • PART ONE
    7·1 answer
  • A very long straight wire has charge per unit length 1.44×10-10C/m.
    6·1 answer
  • What does a motion diagram represent? ​
    10·1 answer
  • Which statements describe how a machine can help make work easier? Select two options.
    12·1 answer
  • A cannon tilted up at a 29.0° angle fires a cannon ball at 81.0 m/s from atop a 22.0 m -high fortress wall. What is the ball's i
    12·1 answer
  • Point charges 1 mC and −2 mC are located at (3, 2, −1) and (−1, −1, 4), respectively. Calculate the electric force on a 10 nC ch
    7·2 answers
  • One of the ways that scientists determine the distance between Earth and other objects in space is to send light waves toward an
    11·1 answer
  • How much electrical energy is used by a 400 W toaster that is operating for 5
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!