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A beam consisting of five types of ions labeled A, B, C, D, and E enters a region that contains a uniform magnetic field as shown in the figure below. The field is perpendicular to the plane of the paper, but its precise direction is not given. All ions in the beam travel with the same speed. The table below gives the masses and charges of the ions. Determine the magnitude of the magnetic field if ion A travels in a semicircular path of radius 0.5 m at a speed of 5 × 106 m/s. Note: 1 mass unit = 1.67 × 10–27 kg and e = 1.6 × 10–19 C

The drawing shows four situations in which a positively charged particle is moving with a velocity v→{“version”:”1.1″,”math”:”v→”}  through a magnetic field B→{“version”:”1.1″,”math”:”B→”}. In each case, the magnetic field is directed out of the page toward you, and the velocity is directed to the right. In only one of these drawings is the magnetic force F→{“version”:”1.1″,”math”:”F→”} physically reasonable. Which drawing is it?

A 2 mm diameter wire of length 20 m carries a 200-mA current when a voltage of 0.05 V is applied across its ends. What is the resistivity of the wire?

This organelle contains oxidases and catalases.

Pull on bones or skin causing body movements.

An 89-year-old has had a right below-the-knee amputation.  He is progressing well but continues to complain of pain in the toes on his right foot.  The physician told him he is suffering from “phantom pain” in his amputated extremity. He asks the nurse to explain “phantom pain”.  The most appropriate response would be: a. “Phantom pain does not exist except in your mind.”b. “I can’t answer that.  You’ll have to ask the physician.”c. “Phantom pain occurs because the nerve tracts that register pain in the amputated limb continue to send a message to the brain.”d. “Phantom pain occurs when you start thinking about your loss.  It’s best to keep your mind occupied with other things.”

Forms tendons and ligaments.

For your client to be physically mobile after the amputation, which of the following nursing goals takes priority? a. Preventing contractures.b. Preventing edema.                                                                                                                                                                                                                      c. Preventing phantom limb pain.                                                                                                                                                                                                  d. Preventing depression.

Present in electrically excitable tissues.

Site of enzymatic breakdown of phagocytized material.