Blog

(04.04 MC)Ohm’s law is often used in conjunction with the P = IV equation. A small flashlight bulb provides a resistance of 6.0 Ω to the 400. mA current that runs through it. Determine the power generated from the circuit.

(06.01 MC)An aluminum beam is 10.0 m long at a temperature of 25.0 °C. The temperature of the beam is raised to 75.0 °C. What is the change in the length of the beam due to thermal expansion, if aluminum has a coefficient of linear expansion of 2.40 E−5 °C−1?

(06.09 LC)Which of the following were given as evidence supporting the Big Bang Theory? The red shift in star spectra Microwave energy across the universe at approximately 3 degrees Kelvin The abundance of light elements in the universe

(04.02 LC)A magnetic compass is placed 10 cm away from a simple circuit consisting of a battery, light bulb, switch, and a wire. When the switch is moved to the on position, the bulb lights up and that the compass needle deflects 5 degrees to the west. If voltage of the battery was decreased, what would occur?

A nurse is reviewing IV therapy for multiple clients. Which IV tubing should the nurse anticipate changing more frequently than standard primary continuous tubing to reduce infection risk? Select all that apply.

A nurse is caring for four patients. Which patient situation demonstrates the most appropriate use of a pain assessment scale?

(06.09 MC)Imagine a rocket that has the ability to move close to the speed of light. This rocket is traveling at 0.84 c. A clock is on the rocket. How much time would a stationary observer measure 60.00 seconds of elapsed time on the clock? A piece of metal that is 1.52 meters long is on the rocket. How long would this piece of metal appear to a stationary observer? Remember to show work and provide answers with correct units for full credit.

(06.07 HC)If the threshold frequency for a photoemissive surface is 3.95 E 14 Hz, what is the work function for the surface?

(05.04 LC)Study the following diagram for a thin lens.If the object is arrow A, which of the following would correctly describe arrow B?

(06.09 MC)A spacecraft flies past Earth at a speed approaching the speed of light. On the Earth, the spacecraft was observed and its horizontal length was measured. Which of the following would be correct?