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
Flauer [41]
2 years ago
11

A radioactive particle has a half life of 1 second. If it moves at 3/5 the speed of light, from my point of view standing still

it's new half-life will be
Physics
1 answer:
AVprozaik [17]2 years ago
7 0

The half-life observed by an observer at rest is 1.25 s

Explanation:

In this problem, the particle is travelling at a significant fraction of the speed of light: therefore, we have to consider the phenomenon of the time dilation. The half-life of the particle as measured by an observer at rest is given by

T=\frac{T_0}{\sqrt{1-(\frac{v}{c})^2}}

where

T_0 is the proper half-life of the particle

v is the speed of the particle

c is the speed of light

For the particle in this problem,

T_0 = 1 s

v=\frac{3}{5}c=0.6 c

Substituting into the equation, we find:

T=\frac{1}{\sqrt{1-(\frac{0.6c}{c})^2}}=1.25 s

#LearnwithBrainly

You might be interested in
Which poison was used in the Jonestown massacre?
olga nikolaevna [1]
That would be Cyanide. 

Hope this helps! (:
3 0
3 years ago
Read 2 more answers
What are all of the physics rules?
defon

Answer:

f this bs

Explanation:

no i will not answer this

8 0
2 years ago
Read 2 more answers
A tennis ball is dropped from a height of 1.21m above the ground. Calculate its velocity when it is 0.27m from the ground.
wlad13 [49]
9.81m/s^2 x .27 = 2.6487m/s
8 0
3 years ago
A capacitor with an initial potential difference of 185 V is discharged through a resistor when a switch between them is closed
GrogVix [38]

Answer:

  • a. \tau =  2.1161 s
  • b. V(18.8 \ s) = 0.0256 \ V

Explanation:

<h3>a.</h3>

The equation for the voltage V of  discharging capacitor in an RC circuit at time t is:

V(t) = V_0 e^{(- \frac{t}{\tau}) }

where V_0 is the initial voltage, and \tau is the time constant.

For our problem, we know

V_0 = 185 \ V

and

V(10 \ s) = V_0 e^{(- \frac{10 \ s}{\tau}) } = 1.64 \ V

So

185 \ V \ e^{(- \frac{10 \ s}{\tau}) } = 1.64 \ V

e^{(- \frac{10 \ s}{\tau}) } = \frac{1.64 \ V}{ 185 \ V }

ln (e^{(- \frac{10 \ s}{\tau}) } ) = ln (\frac{1.64 \ V}{ 185 \ V })

- \frac{10 \ s}{\tau}  = ln (\frac{1.64 \ V}{ 185 \ V })

\tau =  \frac{-10 \s}{ln (\frac{1.64 \ V}{ 185 \ V }) }

This gives us

\tau =  2.1161 s

and this is the time constant.

<h3>b.</h3>

At t = 18.8 s we got:

V(18.8 \ s) = 185 \ V  \ e^{(- \frac{18.8 \ s}{2.1161 s}) }

V(18.8 \ s) = 185 \ V \ e^{(- \frac{18.8 \ s}{2.1161 s}) }

V(18.8 \ s) = 0.0256 \ V

4 0
3 years ago
Some compounds are classified as acids or bases . The ph scale shows how acidic or how basic these compounds are the lower the p
lianna [129]

the answer could be (very basic) since options arent given

8 0
2 years ago
Other questions:
  • The constant of proportionality between charge and voltage is the:________.
    15·1 answer
  • A robot on a basketball court needs to throw the ball in the hoop. The ball have a velocity of 10 m/s and an an angle of 60 degr
    8·1 answer
  • T Object]User: Which of the following does not affect the electrical resistance of a body?
    5·2 answers
  • Two horses begin at rest. After a few seconds, horse A is traveling with a velocity of 10m/s west, while horse B is traveling wi
    8·2 answers
  • Cart A and cart B are moving toward each other. They collide and come to rest at the point of impact. From this observation, we
    8·2 answers
  • Which three statements about electromagnetic radiation are true?
    7·2 answers
  • What is the focal length of a lens
    14·1 answer
  • AM radio waves have longer wavelength than FM radio waves? true or false?
    7·1 answer
  • A rugby players runs 10.0 m straight down the playing field in 2.00 s. The player is then hit and pushed 5.00 m straight backwar
    9·1 answer
  • A 0.50-kg croquet ball is initially at rest on the grass. When the ball is struck by a mallet, the average force exerted on it i
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!