LECCHRIS

Superconductivity - ANSWER Superconductivity means that a material has zero resistivity/resistance. Resistance of the material decreases proportional to temperature, it becomes superconducting once under a critical transition temperature. Describe interaction that is responsible for keeping protons and neutrons together in a stable nucleus - ANSWER The strong interaction has a short range. It is attractive up to 5fm and repulsive from around below 0.5fm. The force is negligible for distances ...

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Current - ANSWER Rate of flow of charge Coulomb - ANSWER The amount of charge passing a point when a current of 1A flows for 1s Potential difference - ANSWER The work done per unit charge in moving a small point positive charge between two points Threshold Voltage for a Diode - ANSWER The voltage at which a current will begin to flow at, assumed to be +0.6V if not stated Reverse Bias - ANSWER When very little currency can flow in the reverse direction of a diode Variable Resistor ...

What is meant by work function (2) - ANSWER Minimum energy required by an electron to escape from (1) a metal surface (1) What is meant by ionisation energy? (2) - ANSWER Minimum energy required to remove an electron from an atom (1) from the ground state (1) Why do emitted electrons have a kinetic energy that varies up to a maximum value? (4) - ANSWER Energy of a photon is fixed/constant (1) Energy is required for electrons to overcome work function ø (1) Electrons deeper into/below th...

A nurse is caring for a client who has chronic venous insufficiency and a prescription for thigh high compression stockings. Which action should the nurse take? a. elevate legs for 10 min, 2-3 times a day while wearing stockings b. apply the stockings in the morning upon awakening and before getting out of bed c. roll the stockings down to the knees to relieve discomfort on the legs d. remove the stockings while out of bed for 1 hour, 4 times a day, to allow the legs to rest - ANSWER B. Appl...

A nurse is planning care for a client who has a full-thickness burns on the lower extremities. Which of the following interventions should the nurse include? a) Limit visitation time for client's children to 40 minutes per day b) clean the equipment in the client's room once per week c) provide a diet of fresh fruits and vegetable for the client d) apply new gloves when alternating between wound care sites - ANSWER d) apply new gloves when alternating between wound care sites A nurs...

The student nurse studying the gastrointestinal system understands that chyme refers to what? a. Hormones that reduce gastric acidity b. Liquefied food ready for digestion c. Nutrients after being absorbed d. Secretions that help digest food - ANSWER b A client scheduled for a percutaneous transhepatic cholangiography (PTC) denies allergies to medication. What action by the nurse is best? a. Ask the client about shellfish allergies. b. Document this information on the chart. c. Ensure...

Respiratory Alkalosis S/S - ANSWER lethargy lightheadedness confusion tachycardia dysrhythmias related to hypokalemia nausea vomiting epigastric pain numbness and tingling of the extremities hyperventilation (tachypnea) A nurse is contributing to the plan of care for an older adult client who is at risk for Osteoporosis. Which intervention should the nurse include to prevent bone loss? - ANSWER Encourage weight bearing exercises (such as walking because it can help maintain bone mass...

A nurse in an emergency department is preparing to perform an ocular irrigation for a client. Which of the following actions should the nurse plan to take? a. Assess the client's visual acuity prior to irrigation b. Have the client turn their head toward the unaffected eye c. Hold the irrigator syringe 3.81 cm (1.5 in) above the eye d. Perform the irrigation with sterile water for irrigation - ANSWER d. Perform the irrigation with sterile water for irrigation A nurse is preparing to admi...

What agencies enforce the laws regarding prescription medications in Canada? - ANSWER Health Canada and the Royal Canadian Mounted Police (RCMP). Who traditionally had the privilege of prescribing medications in Canada? - ANSWER Medical doctors and doctors of osteopathy. Which healthcare providers are allowed to prescribe medications within their practice's scope? - ANSWER Dentists and podiatrists. Which healthcare providers may prescribe medications in some provinces or territories? -...