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In a specific heat experiment 212.0 grams of aluminum (C=913.0 J/kg.K) at 100.0°C) is mixed with 64.0 g water at 20.0°C.
a) Calculate the equilibrium temperature in °C.
b) Find the entropy change of the aluminum.
c) Find the entropy change of the water.
d) Calculate the entropy change of the system.
A laser emits 7.50 × 1017 photons per second in a beam of light that has a diameter of 1.89 mm and a wavelength of 514.5 nm. determine the average electric field strength
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27 °C. A 500-g sample of silver at an initial temperature of 87 °C is placed in the water. Calculate the mass of the aluminum cup
A 3.9×10-24-kg particle is vibrating with simple harmonic motion with a period of 1.8×10-5 s and a maximum speed of 1.70×103 m/s. Find the maximum displacement of the particle
A ball rolls off a table with a horizontal velocity of 5 m/s If it takes 0.6 secs for it to reach the floor, What is the verticle componet of the balls velocity just before it hits the floor
The plates of a parallel-plate capacitor each have an area of 0.1 m2 and are separated by a 1 mm thick layer of paper. Find the electric field between the plates
A 35 mm camera using a standard 50.0 mm lens is focused on a 1.80 m tall person who is standing 3.25 m from the lens. What is the height of the flower%u2019s image on the film
A certain ideal gas is kept at 350K in a container with a volume of 3 cubic meters. what is the average kinetic energy of the gas molecules
Block A with mass 3.72 kg travels with speed vi=3.74 m/s on a smooth horizontal surface and collides with a stationary block B whose mass is 2.29 kg. How much kinetic energy was lost in the collision
A 22nF capacitor is in series with a 1.25 (M)(Ohm) resistor. The capacitor is initially uncharged when the series combination is connected across a 24.0V battery. obtain the maximum charge the capacitor will eventually attain
Sound enters the ear, travels through the auditory canal, and reaches the eardrum. What is the fundamental frequency of the canal
A 8.5 kg block moves at 9 m/s to the right while a 8.5 kg block moves at 10 m/s to the right. Find the kinetic energy relative to the center of mass
A well insulated rigid vessel also contains 3 kg of saturated liquid water at 40 oC. The vessel also contains an electrical resistor that draws 10 amperes when 50 volts are applied.
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