Answer:
The angular speed of the disc be at this time is 46.65 rad/s.
Explanation:
Given that,
Angular acceleration
Time t =15.0 s
We will calculate the angular speed of the disc
A disc initially at rest.
So,
Using rotational kinematics equation
Where, = initial angular speed
=final angular speed
= angular acceleration
Put the value in the equation
Hence, The angular speed of the disc be at this time is 46.65 rad/s.
D. sample 4 would be your answer
You have to create table using cubic meters and the unit Kelvin to measure the temperature.
Answer: Marie Curie's work with Becquerel made her more curious and prompted her to research and experiment with radioactivity.
Explanation:
Henri Becquerel was a French physicist who in 1896 discovered a new property of matter (which was later called <u>radioactivity</u>). This was accidentally observed when Becquerel found out that uranium salt was spontaneously emitting some kind of rays that went through different substances and were able to veil even a photographic film.
Then Marie Curie and her husband Pierre Curie carried out more experiments to study, in a <u>quantitative way</u>, the radiation emitted by the salts Becquerel studied <u>cualitatively,</u> and other salts that contained uranium. During this process they found other radioactive substances, such as: thorium, polonium and radium.
For that reason, the three of them were awarded the Nobel Prize in Physics in 1903 for their discovery of radioactivity.