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Refer to the temperature versus time graph (Figure 2) when answering the questions in Parts C through F. A system consists of 250 g of water. The system, originally at TA = 21.0 oC, is placed in a freezer, where energy is removed from it in the form of heat at a constant rate.
The figure shows how the temperature of the system takes t1 =10min=600s to drop to 0oC, after which the water freezes. Once the freezing is complete, the temperature of the resulting ice continues to drop, reaching temperature TB after an hour. The following specific heat and latent heat values for water may be helpful.
How much energy must be transferred out of the system as heat Q to lower its temperature to 0oC?
An LRC circuit contains an inductor with value L=4.15 mH and a resistor with R=220 ohms. What will the current be in the circuit at resonance and at twice the resonance frequency
A microscope has an objective lens with a focal length of 15.0 mm. A small object is placed 0.60mm beyond the focal point of the objective lens. What is the magnification of the real image
What is the total electric field at P, the center of the arc? Find the electric force that would be exerted on a -4.89 nC point charge placed at P.
A 39-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, How high does she rise during this interval
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at the science olympiad competition a group of middle school students uses a trebuchet that launches a tennis ball from
A hill that has a 25.7% grade is one that rises 25.7 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal?
A water molecule, which is electrically neutral but has a dipole moment of magnitude p = 6.20·10-30 C m, is 3.20 cm away from a point charge q = +6.90 ?C, Calculate the magnitude of the net force
On top of Mount Everest, the temperature is -19 oC in July. Being a physicist, you determine by how many degrees Celsius one needs to change the air temperature to double the average kinetic energy of its molecules.
When an archer pulls an arrow back in his bow, he is storing potential energy in the stretched bow. Compute the potential energy stored in the bow
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