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A 120 g insulated aluminum cup at 17 C is filled with 140 g of water at 40 C. After a few minutes, equilibrium is reached. A) Determine the final temperature. B) Estimate the total change in entropy.
For a double-slit experiment, the inside edges of two 1.73-mm wide slits are separated by a distance of 1.35 mm. find the separation of the bright fringes on the screen
Three charges are positioned on a line. Q1= -2uC, Q2= +5uC, Q3= +3uC. The distance between Q1 and Q2 is a=0.25m. Find the direction of the electric force acting on the charge
A series RLC circuit consists of a 50ohm resistor, a 3.3 mH inductor, and a 480 nF capacitor. What is the instantaneous current i when e=e_0
The catapult on an aircraft carrier can take an aircraft from 0 to 192 mph in 12 seconds, at which time the aircraft launches
An undamped oscillator has period 0 = 1.000 seconds, but I now add a little damping so that its period changes to 1 = 1.001 seconds. What is the damping factor ? By what factor would the amplitude of oscillation decrease after 10 cycles.
A vibration platform oscillates up and down with an amplitude of 9.2 cm at a controlled variable frequency. At what frequency will the rock just begin to leave the surface
A 3 meter long cylindrical support beam (diameter 1 cm) increases in length by 3 mm. how much tension does the beam experience
A farsighted person uses glasses with a refractive power of 3.3 diopters. What is this person's near point when not wearing glasses
The exhaust fan on a typical kitchen stove pulls 600 CFM (cubic feet per minute) through the filter. how many cubic meters per second does this fan pull
A softball pitcher throws an underhanded pitch with the arm fully extended (straight at the elbow). What force did the muscles exert to cause the arm to rotate
A burning firecracker is tossed into the air at an angle of 60 degrees up from the horizon. If it leaves the hand of the hurler at the speed of 30 m/s, how long should the fuse be set to burn if the explosion is to occur 20 m away. Ignore friction..
Spaceship A moves away from earth at a velocity of uxA= -0.50 c and spaceship B at uxA= 0.70c, uyB= -0.20c uzB=0.30c. How fast is B's velocity in A's reference frame
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