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A helicopter propeller blade starts from rest and experiences aconstant angular acceleration of 18.0rad/s2. Find the speed of a point on the blade3.40 m from the axis of rotation when the blade has completed 13 revolutions.
A block of mass m = 2.5 kg rests on a frictionless floor. It is attached to a spring with a relaxed length L = 6 m. By what amount is the spring extended
An air-filled pipe is found to have successive harmonics at 1050Hz , 1350Hz , and 1650Hz, It is an open-closed pipe, so What is the length of the pipe
a copper rod of length 1.12 m is lying on a frictionless table see the drawing. each end of the rod is attached to a
Estimate the change in enthalpy and entropy when liquid ammonia at 270oK is compressed from its saturation pressure of 328 kPa to1,200 kPa. For saturated liquid ammonia at 270oK, Vl=1.551x10-3 m3kg-1, and \(\beta=2.095x10-3K-1.\)
A wire is stretched between two posts. Another wire is stretched between two posts that are four times as far apart. What would be the speed of the wave on the longer wire
Two 10-cm charged disks face each other, 20 cm apart. The left disk is charged to -30 nC and the right disk is charged to +30 nC. What is the electric field (both magnitude and direction) at the midpoint between the disks? What would be the force (ag..
A pipeline is currently being constructed to deliver natural gas produced from the Haynesville shell deposit in Northwest Louisiana to Donaldsonville, LA. How many cubic feet of gas will the line hold
Two cylindrical rods have the same mass. One is made of silver (density = 10 500 kg/m3), What is the ratio (silver-to-iron) of the lengths
The rate of flow of water through a horizontal pipe is 1.98 m3/min. Determine the speed of flow in m/s at a point
Suppose you want to connect your stereo to remote speakers; it requires 20 m length of wire per speaker, how does the resistance changes
W hat is the ratio of an amplitude of the damped oscillations
A city employee wanted to measure the height of a tall tree. The employee stood 9.50 m from the base of the tree; and he saw that his line of sight made an angle of 65.2 degrees above the horizon,
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