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A beaker of water sits in the sun until it reaches an equilibrium temperature of 30°C. The beaker is made of 100 gram of aluminum and contains 175 gram of water. In an attempt to cool this system, 120 gram of ice at 0°C is added to the water.
(a) Find how much ice remains after the system reaches equilibrium.
g
(b) Estimate the final temperature of the system if instead 60 gram of ice were originally added to the warm water.
A transformer on a pole near a factory steps the voltage down from 3600 V (rms) to 120 V (rms). The transformer is to deliver 2000 kW to the factory at 95% efficiency. Find values for the the power delivered to the primary
A Young's interference experiment is per- formed with blue-green argon laser light. The separation between the slits is 0.434 mm, What is the wavelength of argon laser light
a transverse wave traveling on a string is represented by yx 0.48cos5.6x84t. yx is measured in cm above or below
A sailor strikes the side of his ship just below the surfaceof the sea. He hears the echo of the wave reflected from the oceanfloor directly 3.09 s later. How deep is the ocean at this point
One end of a nylon rope is tied to a stationary support at the top of a vertical mine shaft 80.0 m deep. Find the speed of a transverse wave on the rope
A vibrating string with a uniform linear mass density exhibits a single-loop standing wave pattern with a frequency of 600 Hz. determine the ratio of the new tension to the old
Find out the angle of the thread. If the locomotive can exert a constant pull of 8.36E+5 N, how long does it take to increase the speed of the train from rest to 80.7km/hr.
A 30 capacitor initially charged to 20 is discharged through a 1.9 resistor. How long does it take to reduce the capacitor's charge to 5.0
The pulley is located so that the string makes a 45 degree angle with the beam. The beam is uniform, 5 meters long, and has weight. The professor stands 2 meters from the pivot point and has weight.
A slide projector has a lens of focal length 150 mm. An image of 100 cm by 100 cm is formed of a slide whose dimensions are 50 mm by 50 mm
A 25.9 g mass is moving in the +x-direction at 56.6 cm/s while a 22.3 g mass is moving in the -x-direction at 41.6 cm/s. Find their velocity (in cm/s) after the collision
a typical human body has surface area 1.4 m2 and skin temperature 33 degrees celcius. if the bodys emissivity is about
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