You launch a ball at an angle of 35 degrees above the horizontal with an initial velocity of 38 m/s. what is the horizontal distance the ball will traveling before hitting the ground? [must show work]

Atomic nuclei of almost all elements consist of

Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially at x1 = 12.2 mm. in this configuration, q1 exerts a repulsive force of 2.62 µn on q2. particle q2 is then moved to x2 = 18.0 mm. what is the force (magnitude and direction) that q2 exerts on q1 at this new location? (give the magnitude in µn.)

Is a copper wire a conductor or insulator?