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
uysha [10]
2 years ago
14

Help me pleaseeeee ​

Physics
2 answers:
NeTakaya2 years ago
5 0
How often the particles of a medium vibrate
andriy [413]2 years ago
4 0

Answer:

Explanation:

Frequency, in physics, the number of waves that pass a fixed point in unit time; also, the number of cycles or vibrations undergone during one unit of time by a body in periodic motion...............

You might be interested in
A helium nucleus (charge = 2e, mass = 6.63 10-27 kg) traveling at 6.20 105 m/s enters an electric field, traveling from point ci
MA_775_DIABLO [31]

Answer:

v_B=3.78\times 10^5\ m/s

Explanation:

It is given that,

Charge on helium nucleus is 2e and its mass is 6.63\times 10^{-27}\ kg

Speed of nucleus at A is v_A=6.2\times 10^5\ m/s

Potential at point A, V_A=1.5\times 10^3\ V

Potential at point B, V_B=4\times 10^3\ V

We need to find the speed at point B on the circle. It is based on the concept of conservation of energy such that :

increase in kinetic energy = increase in potential×charge

\dfrac{1}{2}m(v_A^2-v_B^2)=(V_B-V_A)q\\\\\dfrac{1}{2}m(v_A^2-v_B^2)={(4\times 10^3-1.5\times 10^3)}\times 2\times 1.6\times 10^{-19}=8\times 10^{-16}\\\\v_A^2-v_B^2=\dfrac{2\times 8\times 10^{-16}}{6.63\times 10^{-27}}\\\\v_A^2-v_B^2=2.41\times 10^{11}\\\\v_B^2=(6.2\times 10^5)^2-2.41\times 10^{11}\\\\v_B=3.78\times 10^5\ m/s

So, the speed at point B is 3.78\times 10^5\ m/s.

7 0
3 years ago
75% of what number is 27? EXPLAIN
zmey [24]
75 percent (calculated percentage %) of what number equals 27? Answer: 36.
8 0
2 years ago
Read 2 more answers
Who was the second man to walk on the moon?
klemol [59]

Answer:

Buzz Aldrin

Explanation:

6 0
2 years ago
Read 2 more answers
HELP PLEASEEEEEEEEEEEE
Bond [772]
The answer would be a
4 0
3 years ago
A hockey pick sliding along a frictional surface strikes a box at rest, after the collision the two objects stick together and m
Hitman42 [59]

Answer:

Explanation:

Option a is correct  

If puck and pick constitute a system then the momentum of the system is conserved but not this may not be valid for the puck .

Option e is correct

If puck and pick is the system then momentum is conserved but because of the presence of friction, mechanical energy is not conserved.

Friction will cause the energy to dissipate in heat.

       

5 0
3 years ago
Other questions:
  • Some refrigerators use propane as their energy source. What kind of energy do these refrigerators utilize?
    7·2 answers
  • A ball is dropped from rest from the top of a 6.15-m-tall building, falls straight downward, collides in-elastically with the gr
    10·1 answer
  • What is the purpose of zigzag line on a periodic table ?
    12·1 answer
  • The horse on a carousel is 3.5m from the central axis.A. If the carousel rotates at 0.13 rev/s , how long does it take the horse
    10·1 answer
  • Two objects that are at different temperatures are added to a container of water and then the container is closed. The temperatu
    12·2 answers
  • suppose that the earth were moved to a distance of 0.25 AU from the sun. How much stronger or weaker would the suns gravitationa
    15·1 answer
  • You don't need to push off with a foot against the ground to start
    6·1 answer
  • Calculate the moment of 3kg and 20cm away from the pivot​
    8·1 answer
  • 14
    11·2 answers
  • Bonds: Including Carbon Compounds Quick Check
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!