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A well-insulated electric water heater delivers 3.10*106cal to its tank of water in 35.0 minutes. Find the resistance of its heating element, which is connected across a 120V potential difference. (1cal=4.186J)
in extremely cold weather conditions where the inside thermostat is set to 27 c and the outside temperature is -20 c
An engine does 17200 J of work and rejects 6470 J of heat into a cold reservoir whose temperature is 272 K
If 15 g of radon gas with a half-life of 4 days is present in a balloon at t = 0, what is the mass of radon gas present
in a particular region of earths atmosphere the electric field above earths surface has been measured to be 140 nc
q1. show a analyse to find the time in years that it would take to travel to relatively nearby barnards star which is
Coherent light with wavelength 603 passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 from the slits.
When the lights of an automobile are switched on, an ammeter in series with them reads 10.20 A and a voltmeter connected across them reads 12.10 V. What is the current through the starting motor
A novice skier starting from rest slides down a frictionless 32 degree incline whose vertical height is 125 meters
A heat engine operates between a cold reservoir at 10 C and a hot reservoir at 200 C. how much heat must be exhausted as waste
define the magnitude of the tension in the chain.
For tests using a ballistocardiograph, a patient lies on a horizontal platform that is supported on jets of air Because of the air jets, the friction impeding the horizontal motion of the platform is negligible. determine the recoil velocity
The first has a magnitude of 128 cm and makes an angle of 113 degrees with the positive x axis. The resultant displacement has a magnitude of 180 cm and is directed at an angle of 39 degrees to the positive x axis.
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