Find the potential, due to an electric dipole, at a point P which is a distance r from the centre C of the dipole and the line CP makes an angle of φ with the
dipole-axis. Assume . What if φ=90°?

8. why do radio telescopes convert radio waves (analog signals) to electrical (digital) signals for analysis? (hint: what did the article say about the advantages of digital signals? )

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.