How much ice must melt in order to cool hot water
If 20 grams of hot water at 80°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity? How much ice must melt in order to cool the hot water down to this temerature?
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A beam of parallel rays from a 31 MHz citizen's band radio transmitter passes between two electrically conducting (hence opaque to radio waves) buildings located 47 m apart. What is the angular width of the beam when it emerges from between the b
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(a) Draw a freebody diagram for the ladder. (b) Find the normal force exerted by the bottom ladder. (c) Find the tension in the rope when the monkey is two-thirds of the way up the ladder.
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A negative charge of -2.0 10-4 C and a positive charge of 9.0 10-4 C are separated by 0.26 m. What is the force between the two charges?
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If the initial temperature of the horseshoe is 450° C, and the initial temperature of the water is 45° C, what is the equilibrium temperature of the system? Assume no heat is exchanged with the surroundings.
One more bulb is added to the circuit and the location of the switch is changed. The new circuit is shown in the figure. (Part B figure) Bulbs A, B, C, and D are identical and the switch is an ideal conductor. How does closing the switch in the fi
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Question: Which of the following options is true in relation to validity? Question Select one:
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