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
egoroff_w [7]
2 years ago
15

The private papers of what scientist had to be decontaminated for two years in the 1990's before being put on file at the Nation

al Library in Paris? 577 points
Physics
1 answer:
SashulF [63]2 years ago
3 0
The answer is Marie Skłodowska Curie (AKA Marie Curie). She <span>lived her life awash in ionizing radiation. She would be carrying bottles of the radium and polonium in the pocket of her coat and put them in her desk drawer. 
So even after a century, her papers are still radioactive. Since the</span><span> most general isotope of radium, which is radium-226, has a half life of 1,601 years.</span>
You might be interested in
Which wave has a wavelengh that is most likely seen as red light?
goblinko [34]

Answer:

D.

Explanation:

Red light has wavelengths around 620 to 750 nm.

7 0
3 years ago
Read 2 more answers
The Capacitive reactance of a 0.094uF capacitor when a frequency of 25kHz is applied is lus 68 Ohms 0.68 Ohms luf
Nana76 [90]

Answer:

Capacitive reactance of the capacitor is 68 ohms

Explanation:

It is given that,

Capacitance, C=0.094\ \mu F=0.094\times 10^{-6}\ F

Frequency, f=25\ kHz=25\times 10^3\ Hz

Capacitive reactance is given by :

X_C=\dfrac{1}{2\pi fC}

X_C=\dfrac{1}{2\pi 25\times 10^3\times 0.094\times 10^{-6}}

X_C=67.72\ \Omega

or

X_C=68\ \Omega

So, the capacitive reactance of the capacitor is 68 ohms. Hence, this is the required solution.

8 0
2 years ago
Sophie says that geologic maps do not matter because she gets no benefits from them. Why is Sophie wrong? a. She can see the ran
astra-53 [7]
The Answer is Option C 
I think...
Sorry If i am wrong...
4 0
2 years ago
Read 2 more answers
What would you get if you split a bar magnet in the middle?
ipn [44]

Answer:

I believe it's the first option

5 0
3 years ago
Need help on physics/momentum ​
koban [17]

Answer:

vf=11.67m/s

Explanation:

vf:

Δp=m(vf-vi)

80=12(vf-5)

80=12vf-60

140=12vf

vf=11.67m/s

pf:

p=m*v

p=12*11.67

p=140.04 N*s

Hope this helps

5 0
3 years ago
Other questions:
  • 2. Find the time taken by the bus to reach the stop. need only group B, 2 answer
    9·1 answer
  • How many times does the earth spin in a year
    13·2 answers
  • What type of air mass brings a hurricane?
    12·1 answer
  • Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the two c
    14·1 answer
  • A 60 N force is applied over a distance of 15 m. How much work was done?
    10·1 answer
  • 40 Points!!!!!!!!!!!!!
    6·1 answer
  • How is energy transferred during the water cycle? Question 1 options: Water gains energy during evaporation and releases it duri
    8·2 answers
  • What direction do all planets rotate BUT Venus?
    9·2 answers
  • Two pulses move in opposite directions on a string and are identical in shape except that one has positive displacements of the
    8·1 answer
  • a 1300-kilogram space vehicle travels at 4.8 meters per second along the level surface of mars. if the magnitude of the gravitat
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!