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
4 years ago
9

When a high‑energy photon passes near a heavy nucleus, a process known as pair production can occur. As a result, an electron an

d a positron (the electron's antiparticle) are produced. In one such occurrence, a researcher notes that the electron and positron fly off in opposite directions after being produced, each traveling at speed 0.941c. The researcher records the time that it takes for the electron to travel from one position to another within the detector as 15.7 ns. How much time would it take for the electron to move between the same two positions as measured by an observer moving along with the positron?
Physics
1 answer:
shtirl [24]4 years ago
4 0

Answer:

1.47*10^{-8}s

Explanation:

You first calculate the distance traveled by the electron:

x=vt\\\\x=(0.941(3*10^8m/s))(15.7*10^{-9}s)=4.43m

Next, you calculate the relative speed as measure by an observer in the positron, of the electron:

u'=\frac{u+v}{1+\frac{uv}{c^2}}\\\\u'=\frac{0.941c+0.941c}{1+\frac{(0.941)^2c^2}{c^2}}\\\\u'=0.99c

with this relative velocity you calculate the time:

t=\frac{x}{u'}\\\\t=\frac{4.43m}{0.99c}=1.47*10^{-8}s

You might be interested in
A liquid flowing from a vertical pipe has a very definite shape as it flows from the pipe. To get the equation for this shape, a
Nadya [2.5K]
A) Find an equation for the speed of the liquid as a function of the distance y it has fallen
5 0
4 years ago
Read this /https://www.carbonbrief.org/polar-bears-and-climate-change-what-does-the-science-say
DerKrebs [107]

Melting ice would damage this polar bears habitat meaning the polar bear may decrease


5 0
3 years ago
A proton with an initial speed of 400,000 m/s is brought to rest by an electric field. Did the proton move into a region of high
Anton [14]

A proton is initially moving at high speed

v = 400000 m/s

so here initially proton is having high speed and high kinetic energy

now this proton comes to rest by external electric field

so the potential energy of proton will increase or we can say that kinetic energy will convert into electrostatic potential energy

so here the proton must have to move at higher potential region

so here correct answer must be

b. Because the proton is a positive charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential.

8 0
3 years ago
9. A refrigerator repairman pushes a refrigerator 75 cm horizontally to get access to the panel behind
kondor19780726 [428]

Explanation:

the formula for workdone is W=F×D

From the parameters given.

F=?

W=175

D=75

solving for f

F= w/d

F=175/75= 2.33N

3 0
3 years ago
WHAT IS PIVOT POINT ?
geniusboy [140]
Pivots Points are price levels chartists can use to determine intraday support and resistance levels
3 0
3 years ago
Read 2 more answers
Other questions:
  • This experiment, you compare several unknown powders to known powders. What is the name given to all of the known materials used
    9·2 answers
  • Use ohms law to determine the battery voltage you would need to send 2.5 A of current through a light bulb with 3.6 Ω of resista
    5·1 answer
  • A Roman centurion fires off a vat of burning pitch from
    6·2 answers
  • The three forces (in units of N) given below are acting on a 20 kg mass. Calculate the magnitude of the acceleration of the mass
    12·1 answer
  • What is the total resistance in the circuit? (include unit in answer - ohms)
    8·1 answer
  • Suppose a zero-resistance rod slides to the right on two zero-res a distance of 0.330 m. The rails are connected by a 16 2 resis
    8·2 answers
  • What are 5 different ways to use a fidget spinner?
    13·1 answer
  • Write the formula of mechanical advantage​
    7·1 answer
  • In a parachute, falling steadily at 7.5m/s, how long does it take to reach the ground from 3,000 m high?
    10·1 answer
  • If a rocket was shot into outer space and never collided with any planets or asteroids, what would happen to the rocket once it
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!