Aproton, with mass 1.67 x 10-27 kg and charge +1.6 x 10-19 c, is sent with velocity 7.1 x 104 m/s in the +x direction into a region where there is a uniform electric field of magnitude 730 v/m in the +y direction. assume that the magnetic field has no x-component and neglect gravitational effects. what is the magnitude and direction of the uniform magnetic field in the region, if the proton is to pass through undeflected?

B = 0.0102 T

Explanation:

given,                            

mass of proton =  1.67 x 10⁻²⁷ kg

charge of proton = 1.6 x 10⁻¹⁹ C

velocity = 7.1 x 10⁴ m/s in x-direction

Uniform electric field = 730 V/m in y- direction

equation of force in electric field

F = E q                          

equation of force in magnetic field

F = q V B                          

equating both force expression

E q= q V B                              

B = 0.0102 T

if the forces acting on an object are unbalanced, the object will accelerate in the direction of the net force on the object.

explanation:

this is best explained by having an understanding of newton's second law, which states that f=ma. you see, when the forces are unbalanced, net force (sum of all forces) is not zero. therefore making it necessary for the object to have an acceleration in the direction of the net force.

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper