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A simple Atwood’s machine uses a massless pulley and two masses m1 and m2. Starting from rest, the speed of the two masses is 8.4 m/s at the end of 7.2 s. At that time, the kinetic energy of the system is 62 J and each mass has moved a distance of 30.24 m. Find the value of heavier mass. The accel- eration due to gravity is 9.81 m/s2 . Find the value of lighter mass.
A bullet weighting 10g is fired with a velocity of 088 m/s. After passing through a mud will 1m thick, its velocity decreases 10 100 m/s. Find the average resistance offered by the mud wall.
A permanent magnet is hung from a string ( balanced ) and pointed in an East - West orientation and released. Describe its motion
A ceiling fan with 89 diameter blades is turning at 65. Presume the fan coasts to a stop 30 after being turned off. Throughout how many revolutions does the fan turn while stopping.
A student makes a simple ac generator by using a single square wire loop 15cm on a side. The loop is then rotated at a frequency of 60 Hz in a magnetic field of 1.8×10?2T, What is the maximum emf output
Two converging lenses, each of focal length 14.9 cm, are placed 39.6 cm apart, define Where is the final image formed
A series ac circuit consists of a voltage source of frequency f=60 Hz and source voltage amplitude 345 volts, a resistor of resistance R=335 ohms, what is the current amplitude in the circuit
A turtle ambles leisurely-as turtles tend to do-when it moves from a location with position vector r1,x = 1.01 m and r1,y = -2.99 m in a lettuce garden to another location, What are the components and the magnitude of the turtle\'s average velocity
A recording engineer works in a soundproofed room that is 45 dB quieter than the outside. If the sound intensity in the room is 1.30 x10-10 W/m2, what is the intensity outside.
Suppose the loop in the generator in the figure below is square and the length of each side of the loop is increased by a factor of nine. By what factor will the AC voltage change
in 17.69 seconds you compress a spring of spring constant 153.33 N/m from its equilibrium length of 6.5 cm to a length of 18.16 cm. What is your average power
A rod has a linear density ? = 3x, where x is the distance along the rod, What is the coordinate of the center of mass of the rod
At t = 0 a grinding wheel has an angular velocity of 23.0 rad/s. It has a constant angular acceleration of 31.0 rad/s2 until a circuit breaker trips at t = 2.00 s. From then on, it turns by 432 rad as it coasts to a stop at constant angular accele..
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