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
Talja [164]
4 years ago
14

What can one say for sure about element #99, Einsteinium (Es))? a) There's no such element! b) It is an alkali metal. c) It is r

adioactive. d) It has 253 neutrons. e) It increases one's 1.Q. slightly when swallowed.
Physics
1 answer:
Dmitrij [34]4 years ago
8 0

Answer:

Option (C)

Explanation:

Einsteinium is an element of the periodic table grouped in the Actinide series, with atomic number 99. They are dense element and highly electro-positive. <u>They are highly radioactive</u>, i.e the atoms within the element are unstable and constantly decay until they reach a stable environment. It has 99 number of electrons and protons, 153 number of neutrons.

Due to its high radioactivity, they are health hazardous and can used in making nuclear weapons but their uses are very limited and unknown.

Thus, the correct answer is option (C).

You might be interested in
Weight gain occurs when a person consumes too muchimany
MAVERICK [17]
The answer is calories !!
5 0
3 years ago
Read 2 more answers
During which section was the person moving at the highest speed? What was their speed? Defend your answer.
alexandr1967 [171]

Where's the person that the question is talking about?

5 0
3 years ago
Read 2 more answers
When the frequency of a sound wave is doubled, then:
tresset_1 [31]

Answer:

If the frequency of a wave is doubled, what happens to its wavelength? If the frequency is doubled, the wavelength is only half as long.

6 0
3 years ago
Read 2 more answers
I WILL GIVE BRAINLIEST
lubasha [3.4K]

Answer:

The answer is

A.Speed

and

D. Acceleration

7 0
3 years ago
Read 2 more answers
A toy of mass 0.155 kg is undergoing simple harmonic motion (SHM) on the end of a horizontal spring with force constant 305 N/m
zzz [600]

Answer:

310.38\times 10^{-4}j

Explanation:

We have given mass m=0.155 kg

Force constant K = 305 N/m

Distance X=1.25\times 10^{-2}m

Velocity v=.305 m/sec

The total energy at any position of the motion is give by E=\frac{1}{2}mv^2+KX^2  here \frac{1}{2}mv^2 is energy due to motion and KX^2  is energy due to spring elongation

So total energy E=\frac{1}{2}\times 0.155\times 0.305^2+305\times 0.0125^2=310.38\times 10^{-4}j

4 0
3 years ago
Other questions:
  • A sled is moving down a steep hill. The mass of the sled is 50 kg and the net force acting on it is 20 N. What must be done to f
    12·2 answers
  • How do the weights of the tug of war teams affect the match
    6·2 answers
  • what is the magnitude of the vector described below? 13 m/s to the east a. east b. meters per second c. 13 m/s d. meters
    5·1 answer
  • Explain when insulator, conductor, and semiconductor is and what it does. Give examples.​
    13·1 answer
  • A tennis player smashes a ball of mass m horizontally at a vertical wall. The ball rebounds at the same speed v with which it st
    13·1 answer
  • If im pushing on a wall what are the action and reaction force?
    6·1 answer
  • Which tricks do you use to reduce pressure in everyday activities? Which tricks do you use to reduce pressure in everyday activi
    8·1 answer
  • What’s the name of the muscle indicated on the image below?
    10·1 answer
  • When the displacement of a mass on a spring in simple harmonic motion is A/2 from the equilibrium position, what fraction of the
    5·1 answer
  • A block slides down a 30.0 degree inclined plane at an acceleration of 2.0 m/s^2. What is the coefficient of friction between th
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!