Who developed the first alternating current electric system? George Westinghouse John D. Rockefeller Andrew Carnegie Thomas Edison Alexander Graham Bell

11. ¿Qué es un campo gravitacional? A) Una región donde se experimenta una fuerza eléctrica. B) Una región donde se experimenta una fuerza magnética. C) Una región donde se experimenta una fuerza gravitacional D) Una región sin ninguna fuerza.

Which types of electromagnetic waves are slower than visible light? ultraviolet gamma rays radio waves microwaves

Air rises in low pressure areas and sinks in high pressure areas. True False

This path increment for an apple corresponds to negative work done by gravity: $\Delta y=+0.25m$ $\Delta y=-0.25m$ $\Delta y=0.00m$

An object in uniform circular motion has a __ acceleration. constant tangential linear centripetal

At which temperature will the particles in a solid have the MOST kinetic energy? $150^{\circ }C$ $60^{\circ }C$ $5^{\circ }C$ $30^{\circ }C$

Ch 22 \# 8 Aircraft sometimes acquire small static charges. Suppose a supersonic jet has a $0.500\mu C$ charge and flies due west at a speed of $660m/s$ over the Earth's magnetic south pole (near Earth's geographic north pole)where the $8.00\times 10^{-5}T$ magnetic field points straight down. What are the direction and the magnitude of the magnetic force on the plane?

Which form of electromagnetic radiation carries the most energy? X-rays Infrared Radio waves Gamma rays Microwaves

28. The fact that a laser pointer is red, is an example of which property of light? Polarization Intensity Frequency Brightness Direction

A series R-L-C circuit consists of a $100\Omega $ Resistor, a $75\Omega $ Inductive Reactance and a $150\Omega $ Capacitive Reactance. If we wish to maximize the circuit current how can we do this? Raise the frequency until $XL=Xc$ Lower the Frequency until $XL=Xc$ Can't be done Double the value of R