In a mass spectrometer, the electric field between the plates of the velocity selector is 2 x 105 V/m, and the magnetic field is 2.0 T. You are trying to find the mass of a new singly charged positive ion. You discover that a stream these ions, after passing through the velocity selector, moves in a circular path with radius 30.0 cm in the magnetic field. (a) What is the speed of these ions just after passing through the velocity selector

c.the charges if the proton and electron and gravity

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

i think the answer is a and b

i wish you luck