Acharged particle that is moving in a static uniform magnetic field
will always experience a magnetic force, regardless of its direction of motion.
may experience a magnetic force, but its direction of motion will not change.
may experience a magnetic force, but its speed will not change. may experience a magnetic force which will cause its speed to change.
none of the above statements are true.
Solved
Show answers
More tips
- S Style and Beauty How to Get Rid of a Double Chin?...
- F Food and Cooking How to Cook Julienne? Recipes and Tips...
- D Dating, Love, Relationships 10 Useful Tips on How to Survive a Breakup?...
- F Food and Cooking Apple Cider Vinegar: The Ultimate Health and Beauty Solution...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
Answers on questions: Physics
- P Physics Hello What is weather?...
- P Physics What is the frequency of a wave that has a speed of 32m/s and and a wavelength of 0.8m?...
- P Physics If a car can go 0 km/hr to 100 km/hr in 5.0 seconds what is its acceleration...
- P Physics Six charges are placed at the corner of a regular hexagon as shown...
- P Physics What is the function of the auditory nerve? O to move sounds away from the olfactory nerve O to make up for a lack of rods O to adjust for color blindness O to transmit neural...
- P Physics Consider a Carnot cycle starting at the state of highest pressure and smallest volume. Call the isothermal expansion from this state step 1, the adiabatic expansion which...
- P Physics What is the characteristic of the columns in the periodic table?...
- M Mathematics Plz help with this math problem!!!...
- M Mathematics Find the product of the binomials. (a +1) and (a -1)...
- M Mathematics Hot dogs cost $2.50 and drinks cost $1.75 at the ball park. Bobby only purchased hot dogs and drinks and had a total of 9 items for $19.50. How many hot dogs did Bobby buy?...
Ответ:
may experience a magnetic force, but its speed will not change.
Explanation:
A charged particle moving in a static uniform magnetic field experiences a magnetic force (called Lorentz force) which is given by:
where
q is the charge
v is the speed of the particle
B is the magnetic field intensity
We can notice that when
(so, when the particle is moving parallel to the field), the magnetic force is zero, so the particle does not experience any force. This means that we can immediately exclude the following choice:
- will always experience a magnetic force, regardless of its direction of motion.
Moreover, the magnetic force acts perpendicular to the direction of motion of the particle. This means it will change the direction of motion of the particle, so we can also exclude the following option
- may experience a magnetic force, but its direction of motion will not change.
Finally, the fact that the magnetic force is perpendicular to the direction of motion of the particle also implies that the force does no work on the particle. According to the work-energy theorem (which states that the kinetic energy gained by the particle is equal to the work done on it), this implies that the particle gains no kinetic energy, so its speed does not change. This allows us to exclude also the following choice
- a magnetic force which will cause its speed to change.
Therefore, the correct option is the only one remained:
- may experience a magnetic force, but its speed will not change.
Ответ:
The electric field is![E = 7.5 *10^{6} \ N/C](/tpl/images/0708/8939/06bdf.png)
Explanation:
From the question we are told that
The radius of the metal sphere is![R = 2.0 \ cm = 0.02 \ m](/tpl/images/0708/8939/7b038.png)
The excess charge which the metal sphere carries is![q = 3.0 \mu C = 3.0*10^{-6} \ C](/tpl/images/0708/8939/301b7.png)
The distance of the position being to the center is![D = 6.0 \ cm = 0.06 \ m](/tpl/images/0708/8939/e4749.png)
The coulomb constant is![k =9*10^{9} \ N \cdot m^2 /C^2](/tpl/images/0708/8939/b91a6.png)
Generally the electric field is mathematically represented as
substituting values