Archaeologists use a mass spectrometer to seperate the nitrogen isotopes 14N and 15N. The +1 ions of 15N enter the spectrometer with a speed of 8.5 km/s, and they travel in a circular arc of radius 25.0 cm. The magnetic field in the spectrometer has strength 5.29*10^-3 T. What is the mass of a 15N atom? Let the charge on a proton q=1.6*10^-19 C.
2.49*10^-26 kg
4.01*10^-25 kg
3.40*10^-22 kg
2.49*10^-23 kg

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adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

see earlier

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