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A gas turbine disc in a modern jet engine has a mass of 150 kg, a diameter of 1 metre, and spins at 10 000 rpm.
Taking a simplified model of the shape of the disc as a uniform thick ring with inner and outer diameters of 250 mm and 1,000 mm respectively, calculate its kinetic energy when spinning at full speed.
An iron bolt is used to connect two iron plates together. Thebolt must withstand shear forces up to about 3150 N. Calculate the minimum diameter for the bolt
The spin cycles of a washing machine have two angular speeds, 408rev/min and 648rev/min. Find the laundry's maximum radial acceleration
A bicycle has wheels with a diameter (DIAMETER, not radius) of 0.580 m. Find the linear acceleration of the bicycle
an oscillator consists of a 0.700-kg block connected to a spring on a horizontal frictionless surface. when set into
The left ventricle of the heart accelerates blood from rest to avelocity of +24cm/s. How much time does blood take to reach its final velocity?
An object is placed to the left of a convex lens and on the optical axis. What is the magnification of the image formed by the lens
You are standing midway between a ceremonial cannon and a reflective wall. How far apart are the cannon and the wall
A square field measuring 100.0 m by 100.0 m has an area of 1.00 hectare. An acre has an area of 43,600 ff. If a country lot has an area of 120 acres
A capacitor is connected to the terminals of a variable frequency oscillator. The peak voltage of the source in kept fixed while the frequency is increased.
While a roofer is working on a roof that slants at 39.0 degrees above the horizontal, he accidentally nudges his 93.0 N toolbox, causing it to start sliding downward, starting from rest.
The distance among the objective and eyepiece lenses in a microscope is 22cm. The objective lens has a focal length of 5.5mm. What eyepiece focal length will give the microscope an overall angular magnification of 300?
Assume that sound is emitted uniformly in all directions by a public address system. Find the intensity at a spot that is 74 meter away
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