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A 50 g block of ice at 0 °C rests in a pan in a room at 22 °C and melts completely. What is the entropy change (in cal/K) in the ice system while melting occurs? (Lf = 80 cal/gm)
Two long, parallel wires separated by a distance, d, carry currents in opposite directions. If the left-hand wire carries a current i/3, and the right-hand wire carries a current i, determine where the magnetic field is zero. (Use the following as ne..
The rope wrapped around the outer diameter of the disk is pulled at a constant speed of 1.06 m/s. If the outer radius is 1.39 cm, how fast does the hanging mass rise
A golf ball is hit horizontally from the edge of a ramp. It lands at an elevation 200 m below and its trajectory upon landing is 45° angle below the horizontal
A car drives north at 46 for 10 and then turns east and goes 5 at 60. At last, it goes southwest at 30 for 6.0. What is the average velocity.
A 480 g ball swings in a vertical circle at the end of a 1.9 m-long string. What is the speed of the ball at that point
You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, where the acceleration due to gravity is 3.71 meters per second per second. Find the net downward force on the tank's flat bottom
A mass pulled by a constant force accelerates from 10 cm/s to 25 cm/s in 3.5 s. what is the magnitude of the second force
When you plot 1/Do as a function of 1/Di for a converging lens, the Y-intercept of the best fit line turns out to be 0.055(cm-1). What is the focal length of the converging lens
A hydrogen atom is in its third excited state (n = 4). Using the Bohr theory of the atom, calculate the following. the radius of the orbit. the linear momentum of the electron
q1. a series r-l-c circuit of r 200 ohms l 0.900 h and c 2.00 uf carries an rms current of 0.250 a with the
The perspective provided by Multiple-Concept is useful here. The highest barrier that a projectile can clear is 15.60 m, while the projectile is launched at an angle of 23.0 ° above the horizontal. What is the projectile's launch speed.
Three blocks are in contact and sitting on frictionless table. What is the magnitude of the force exerted by the third block on the second block
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