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36 kg of a liquid metal with a latent heat of fusion of 33.18 kJ/kg freezes while at its melting temperature of 398 °C. Calculate the change in entropy of the metal in J/K.
What is the magnifying power of an astronomical telescope using a reflecting mirror whose radius of curvature is 4.09m and an eyepiece whose focal length is 3.29cm
A rock is thrown vertically upward with a speed of 17.0 m/s from the roof of a building that is 70.0 m above the ground. Assume free fall. What is the speed of the rock just before it strikes the ground
A plane accelerates from rest at a constant rate of 5.00m/s^2 along a runway that is 1800m long. What is the distance traveled by the plane in the last second before taking off
A 35 ? lamp and a 90 ? lamp are connected in series and placed across a potential of 40 V. What is the voltage drop across the first lamp
A uniform electric field of magnitude 445 N/C pointing in the positive x-direction acts on an electron, that is initially at rest. The electron has moved 3.10 cm.
A 15-gram coin is placed on the rim of a turntable rotating at a rate of 15 RPM. The radius of the turntable is .25-meters. determine The centripetal force acting on the coin
Gamma rays are photons with very high energy. What is the wavelength of a gamma-ray photon with energy 605 keV
assuming the acceleration is constant throughout each time interval (but not necessarily the same in both intervals), what distance does the shuttle travel during the interval from 7.00 s to 1.00 min.
A particle of mass 2.4x10^-5kg and charge 3.0x10^-6C is accelerated from rest in a uniform electric field of 180 N/C. Find its acceleration in the electric field
person leaning over a 124 m deep well accidentally drops a siren emitting sound of frequency 2430 hz. What beat frequency does this person perceive
A boy in a moving bus at +6 m/s observes a car moving at -3 m/s. What is the actual velocity of the car with respect to the bus?
A diverging lens with a focal length of -14 cm is placed 10 cm to the right of a converging lens with a focal length of 18 cm. Where will the final image be located
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