Choose the portion of the electromagnetic spectrum with the highest energy associated with it. A. infrared waves
B. microwaves
C. visible light
D. radio waves

Write the correct abbreviation for each metric unit

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?