As shown in Fig. 2, a proton is projected with speed 3 . 90 × 10 6   m s into a region with a uniform electric field parallel to the velocity of the proton and then enters a region with a uniform magnetic field which is perpendicular to the proton velocity with a magnitude B → = 0 . 300   T . Both the width of the electric region and the width of the magnetic region are 20 . 0   c m . If the surface charge density of the left large plate in the electric field region is 6 . 00 × 10 – 6   C m 2 and the surface charge density of the right large plate in the electric field region is – 6 . 00 × 10 – 6   C m 2 , (a) what is the speed of the proton when it exits from the region of the electric field; (b) what is radius of path of the proton after it enters the region of magnetic field; (c) how much time does the proton stay in the region of the magnetic field; and (d) what are the x and y components of the velocity of the proton when it exits the magnetic region? If the magnitude of the magnetic field can be changed, (e) what is the magnitude of the magnetic field if the incoming proton exits the region of magnetic field in a direction opposite to its incoming direction? (mass of a proton= 1 . 67 × 10 – 27   k g ; charge of a proton= 1 . 60 × 10 – 19   C ) fig_q18_final.jpg                                                                 Fig. 2.1                                                                                                                                                                                                                                     Fig. 2.2

The number of turns per meter in a solenoid of fixed length is doubled. At the same time the current in the solenoid is halved. The energy stored in the solenoid:

A PTA assesses the strength of a patient’s lower extremities following an athletic injury. The test pictured below would be MOST effective to examine the strength of the:

You are reevaluating the glenohumeral joint of a 33-year-old female. The patient has received 2 weeks of physical therapy for a frozen shoulder. Which of the following muscles does not attach to the greater tuberosity of the humerus?

An electron moves in a region of constant electric field. Which of the following statements is correct?

A positive valsalva maneuver indicates what type of condition?

Which of the following characterizes lung purge?

Consider the metal loop and a uniform magnetic field in the figure. When this loop has swung to the right as far as it can go, the induced current in it is: fig_q13_final.jpg

An electron is released from rest in a region of space with a nonzero electric field. As the electron moves, what happens to its electric potential energy?

Method acting, which came to Hollywood in the early 1950s and was popularized by actors such as Marlon Brando and James Dean, has become the most common acting style for serious actors.