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It is desired to cool iron parts from 500°F to 100°F by dropping them into water that isinitially at 65°F. Assuming thatall the heat from the iron is transferred to the water and thatnone of the water evaporates, how many kilograms of water areneeded per kilogram of iron?
kg
The two surfaces of a plastic converging lens have equal radii of curvature of 25.0cm, Calculate the index of refraction of the plastic
A 40 kg child slides down a playground slide at a constant speed. The slide has a height of 3.6 m and is 7.6 m long. find the magnitude of the kinetic friction force acting on the child
The masses of the particles are m1 = m3 = 5.0 kg and m2 = m4 = 8.0 kg. Find out the moment of inertia of the system about the z axis.
A glass optical fiber (n= 1.50) is submerged inwater(n=1.33). What is the critical angle for light to stay inside the fiber
A gibbon is hanging onto a horizontal tree branch with one arm, swings with a small amplitude. Estimate the frequency of oscillation
An AC voltage source, with a peak output of 120V, results in dissipation of energy in a resistor at rate of 100W. What is the value of the resistance
Two different elements with half lives Ta and Tb have Na & Nb (undecayed) atoms respectively, Determine the ratio of their activities at this instant
a. What star has the coolest surface temperature b. Which star has the hottest surface temperature c. What is the approximate range of radii of stars in the main sequence compared to the size of the sun
Suppose that 0.10mol of argon gas is admitted to an evacuated 50cm3 container at 20° C. The gas then undergoes isobaric heating to the temperature of 300°C. What is the final pressure of gas? What is the final volume.
question1when the door of the chapel of the mausoleum in hamilton scotland is slammed shut the last echo heard by
In the figure set V = 0 at infinity and let the particles have charges q1 = +q = -5.40×10-5 C and q2 = -6q. They are seperated by d = 30 cm, What is the positive position
In an earthquake waves of several types move through the Earth and along its surface. One type is transverse waves that move along thesurface of the ground (these are the most destructive). You canthink of them as just like the waves you are used ..
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