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
lord [1]
2 years ago
13

Above

Physics
1 answer:
GaryK [48]2 years ago
8 0
It had to be b Druidic
You might be interested in
Tsunami waves have ?
mr Goodwill [35]

   I think it #3(not Sure) I think Its because of their long wavelengths that tsunamis behave as shallow-water waves.                


4 0
3 years ago
An alpha particle (the nucleus of a helium atom) consists of two protons and two neutrons, and has a mass of 6.64 * 10-27 kg. A
melamori03 [73]

Answer:

t = 4.21x10⁻⁷ s

Explanation:

The time (t) can be found using the angular velocity (ω):

\omega = \frac{\theta}{t}

<em>Where θ: is the angular displacement = π (since it moves halfway through a complete circle)</em>

We have:

t = \frac{\theta}{\omega} = \frac{\theta}{v/r}  

<u>Where</u>:      

<em>v: is the tangential speed </em>

<em>r: is the radius</em>

The radius can be found equaling the magnetic force with the centripetal force:

qvB = \frac{mv^{2}}{r} \rightarrow r = \frac{mv}{qB}

Where:

m: is the mass of the alpha particle = 6.64x10⁻²⁷ kg

q: is the charge of the alpha particle = 2*p (proton) = 2*1.6x10⁻¹⁹C

B: is the magnetic field = 0.155 T

Hence, the time is:

t = \frac{\theta*r}{v} = \frac{\theta}{v}*\frac{mv}{qB} = \frac{\theta m}{qB} = \frac{\pi * 6.64 \cdot 10^{-27} kg}{2*1.6 \cdot 10^{-19} C*0.155 T} = 4.21 \cdot 10^{-7} s

Therefore, the time that takes for an alpha particle to move halfway through a complete circle is 4.21x10⁻⁷ s.

I hope it helps you!    

4 0
3 years ago
Which statement best describes how electric fields and magnetic fields are alike?
gladu [14]
<span>Electric field repulsive for objects of like charge and attractive for opposite type of charges and for a magnet you can say that like poles repel and unlike attracts so D makes sense</span>
3 0
3 years ago
Which statement describes the endothermic reaction by this graph?
alexgriva [62]

Answer:

B

endothermic: heat taking in

exothermic: heat given out

8 0
3 years ago
Read 2 more answers
What is cocanve mirror?​
pochemuha

Answer:

A mirror that has a reflecting surface that is recessed inward is called concave mirror

8 0
3 years ago
Read 2 more answers
Other questions:
  • A roller coaster glides from rest from the top of an 80.0 meter hill. What is the speed of the roller coaster at the bottom of t
    14·1 answer
  • In electroplating, the object to be plated is which part of an electrolytic cell? cathode or anode
    8·2 answers
  • What does the ideal gas law allow a scientist to calculate that the other gas laws do not?
    9·2 answers
  • HELP PLZ HELPPPPPPPPPPPPPPPPPPPPPPP I need help
    5·1 answer
  • A particle of mass m moves along the x axis under the influence of a force given by F(x)=(3+2x)i. It starts from rest from the p
    9·1 answer
  • Describe the effect of an increase in temperature on the average speed of the air molecules
    11·1 answer
  • ***PLEASE HELP*** (you don’t have to answer all but at least 1 or 2 answers would help!!!)
    7·1 answer
  • PLEASE TRY TO ANSWER AS MANY QUESTIONS AS YOU CAN !
    12·1 answer
  • Now you will focus on a second hypothesis. This hypothesis can be very similar to the first, but this time you want to focus onl
    9·2 answers
  • light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 87% of the intensity of
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!