What causes the radio pulses of a pulsar?
a. the star vibrates.
b. as the star sp...
![subject](/tpl/images/cats/fizika.png)
Physics, 04.02.2020 13:53 ashgold324
What causes the radio pulses of a pulsar?
a. the star vibrates.
b. as the star spins, beams of radio radiation from it sweep through space. if one of these beams points toward the earth, we observe a pulse.
c. the star undergoes nuclear explosions that generate radio emission.
d. the star's dark orbiting companion periodically eclipses the radio waves emitted by the main star.
e. a black hole near the star absorbs energy from it and re-emits it as radio pulses.
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 07:30
Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (mpg). heavier cars tend to have lower fuel efficiencies (lower mpg ratings). which variable (weight or fuel efficiency) is most naturally considered the explanatory (predictor) variable in this context?
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 15:10
An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 Ëšf and standard atmospheric pressure, what is the value of the mach number?
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 16:00
What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 ∘c/m.
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 19:20
The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 03.12.2020 19:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mkx.png)
Arts, 03.12.2020 19:50
![question](/tpl/images/cats/mir.png)
World Languages, 03.12.2020 19:50
![question](/tpl/images/cats/mat.png)
Mathematics, 03.12.2020 19:50
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 03.12.2020 19:50
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mkx.png)
Arts, 03.12.2020 19:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.12.2020 19:50
![question](/tpl/images/cats/mat.png)
Mathematics, 03.12.2020 19:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 03.12.2020 19:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mkx.png)
Arts, 03.12.2020 19:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
History, 03.12.2020 19:50