The peak voltage of an AC source is 296 V. What is the rms voltage?
a. 148 V
b. 419 V
c. 209 V
d. 296 V
e. 222 V
c
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How "slow" must a 200. gram ball move to have a deBroglie wavelength of 1.0 mm?
What will be an ideal response?
An refrigerator keeps food in the freezer portion at 
and dumps excess heat into the kitchen, whose temperature is 
If the refrigerator has half the coefficient of performance of an ideal reversible refrigerator, and if its motor can supply 250W of power, what is the rate of heat flow into the kitchen?
A. 950W B. 910W C. 625W D. 150W
Microscopic properties of an object:
a. are just small versions of the macroscopic properties. b. are completely unrelated to macroscopic properties. c. are overall large scale properties. d. are the properties of particles that make up the object. e. are the average of many properties of individual particles.
The energy differences in some of the rotational energy levels of the water molecule allow cooking with ______________
Fill in the blank(s) with correct word