A proton travels at right angles through a magnetic field of 0.025 teslas. If the magnitude of the magnetic force on the proton is 1.8 x 10^-14 newtons, what is the velocity of the proton? The value of q = 1.6 x 10^-19 coulombs.

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Find the maximum value of p= 4x + 5y subject to the following constraints :