At each corner of a square of side there are point charges of magnitude Q, 2Q, 3Q, and 4Qa)Determine the magnitude of the force on the charge 2Q. Express your answer in terms of Coulomb's constant k, Q, and l. Express your answer using two significant figuresb)Determine the direction of the force on the charge 2Q Express your answer using two significant figures

Aparticle with mass 1.81×10−3 kg and a charge of 1.22×10−8 c has, at a given instant, a velocity v⃗ =(3.00×104m/s)j^. what are the magnitude and direction of the particle’s acceleration produced by a uniform magnetic field b⃗ =(1.63t)i^+(0.980t)j^?

If element x has 99 protons how many electrons does it have

One hazard of space travel is debris left by previous missions. there are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. calculate the force exerted by a 0.110 mg chip of paint that strikes a space shuttle window at a relative speed of 5.00 ✕ 103 m/s and sticks, given the collision lasts 6.00 ✕ 10-8 s. such a collision chipped the window of the ill-fated challenger in june 1983, causing $50,000 of damage.