Hello I am a grade 12 physics student. I need help with these homework question! Could you please make them detailed and on paper.

Thank a lot!

_5 5 1. A negative charge of 2. 4x 10 C is placed 4 m from another negative charge of 1. 5x10 C. What amount of electric potential energy is stored? [2 marks] 2. The electric field intensity in the region between two parallel plates is 400 NIC. If the plates are connected to a battery with a potential difference of 90 V, what is the separation of the plates? [2 marks] 3. What is the magnitude and direction of the electric field at point Z in the diagram below? [4 marks] -5 _ 41=2.xl C 42:8.Ux10 6c G) G) o [q an cm*30 cmpl X z Y 4. How much work must be done to increase the electric potential energy of a charge of 3. 0x104 C by 120 V? [2 marks] 5. A wire connecting a taillight to a motorcycle battery is 1 m long, and is lying perpendicular to the 5 Earth's magnetic field. If it experiences a force of 6. 0x10 N when carrying a current of 1.5 A, what is the magnitude of Earth's magnetic field at that location? [2 marks] 6.a] Calculate the velocity of a proton, moving in a circular path of radius 8 cm, in a plane perpendicular to a 1.5 T magnetic field. [2 marks] b) Using the conservation of energy for electric charges, what electric potential difference would be required to accelerate the proton if the proton starts from rest? [3 marks] 7. What is the magnitude and direction of a magnetic field if an protron is moving directly upwards at rate of 2. 0X106 m/s experiences a maximum magnetic force of 5. 1x10_\"N [left]. [2 marks] 8. In a Millikan type experiment, two horizontal plates are 2.5 cm apart. A metal sphere of mass 715 1. 5X 10 kg remains stationary when the potential difference between the plates is 460 V, with the upper plate positive. [7 marks] (a) Is the sphere charged negatively or positively? Explain (b) What is the magnitude and direction (up or down) of the electric field intensity between the plates? {c} Calculate the magnitude of the charge on the metal sphere. (d) How many excess or deficit electrons does the sphere have? 9. An astronomer observes the planet Jupiter and finds that the period of its moon Io is 1. 5X105 s. If this moon has an average radius of orbit about Jupiter of 4. 2x108m, what is the mass of Jupiter? [4 marks]