Can you help to answer these, ( intro to Physics 2 )

1. A charge enters a uniform magnetic field as shown. [3 points] For each of the case, indicate the direction of the missing vector. R X X X X X X X X X Magnetic X X X X X X X X X X v X X X X X +q 1) out of the page 1) out of the page 1) out of the page 2) into the page 2) into the page 2) into the page 3) downwards 3) downwards 3) downwards 4) upwards 4) upwards 4) upwards 5) to the right 5) to the right 5) to the right 6) to the left 6) to the left 6) to the left 2. A uniform magnetic field (B) is pointing out of the paper. A positive charge, q and mass, m enters this field, moving with a velocity v from bottom to top. [6 points] (a) Draw a diagram to sketch the path of this charge - indicate all the three vectors (B, v and F). (b) For a particle with the same charge, but twice the mass, the radius of the path will be (1) Smaller (2) Larger (3) Same (c) Sketch the path for this heavier mass on the same diagram as for case (a). (d) A beam of protons moving with a speed of 1.5 x 10' m/sis deflected by a magnetic field of strength 0.5T. If the mass of proton is 1.67x10-27 kg calculate the radius of its path - Cleary show all your work.3. Awire carries a current flowing in the direction indicated in the diagram. [3 points] et (a) Indicate the direction of the magnetic field at the point P. (b) It this current produces a magnetic field of 5x10 T at a distance of 12-cm from the & wire, calculate the current flowing in the wire. P 4. Along straight wire carries a current / as shown in the figure. A small loop of ! wire rests in the plane of the page. Which of the following will not induce a e e e ot [1 point] current in the loop? (a) Rotating the loop so that it becomes perpendicular to the plane of the page. (b) Moving the loop farther from the wire without rotating it. (c) Moving the loop farther from the wire while rotating it. (d) Moving the loop in a direction parallel to the wire. (e) None of the above. 5. An ac voltage with a rms value of 220V, is connected across a 2.7-kQ resistor. Calculate - [2 points] (a) The maximum voltage across the resistor. (b) The rms and peak currents in the resistor. (c) The average power dissipated in the resistor. 6. The primary coil of an ideal transformer has 80 turns and its secondary coil has 400 turns. If the ac voltage applied to the primary coil is 120 V, calculate the voltage is in its secondary coil. Is this a step-up or step- down transformer? [2 points] 7. An EM wave has a wavelength of 350 nm. What is its frequency? In what region of the EM spectrum can you classify it? [1.5 points] 8. Calculate the wavelength of 93.3-MHz waves. In what region of the EM spectrum can you classify it? [1.5 points]