Please solve it quickly please

(K:4) Question 5: Planet X has mass of 2.5 x 1029 kg and radius of 3.50 x 10 m . Determine the A. gravitational strength on planet X B. escape velocity from planet X (K:1, 1:2, A:2, C:1) Problem 2: Three charged particles in the diagram are at the vertices of an isosceles triangle, where d = 2.00crr. Take q=7.00/C. Calculate the following: A the net force on the positive charge. B. the electrical potential at point A. (1:2, A:2, C:2) Problem 3: A particle with mass me and charge q enters from the left into an uniform magnetic field that is out of page with strength with a velocity v. Determine an expression for the period of this particle when it is in the magnetic field. Sketch the situation (C) and show derivation (LA)