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If the elastic limit of steel is 5.0*10^8 Pa, determine theminimum diameter a steel wire can have if it is to support a 62 kgcircus perfomer without it elastic limit being exceeded.
A centrifuge accelerates uniformly from rest to 15,000 rpm in 220 s. Through how many revolutions did it turn in this time
A light ray is incident upon a plane interface between two materials. The ray makes an incident angle with the normal to the surface of 39 degrees in a material, find thev refracted angle (in degrees) in that material
A war-wolf or trebuchet is a device used during the Middle Ages to throw rocks at castles and now sometimes used to fling large vegetables and pianos as a sport. A simple trebuchet.
An ?-particle has a charge of +2e and a mass of 6.64 × 10-27 kg. find the magnitude of the magnetic force on it
A playground merry-go-round has radius 2.90m and moment of inertia 2500kg?m2 about a vertical axle through its center, and it turns with negligible friction. How much work did the child do on the merry-go-round
A beetle 4.80mm is examined with magnifier of focal length 10.3 cm. If the observer's eye is relaxed while using the magnifier, what is the apparent length of the beetle
If a car traveling at 66 km/h will skid 22 m when its brakes lock, how far would it skid if it is traveling at 120 km/h when its brakes lock.
An air-track glider attached to a spring oscillates between the 16.31 cm mark and the 51.41 cm mark on the track. What is the maximum speed of the glider
An electron is located on a pinpoint having a diameter of 6.29 µm. What is the minimum uncertainty in the speed of the electron
Incident photons strike a soduim surface having a work function of 2.2 eV, causing photoelectric emission. What is the wavelength of the incident photons
A line of charge with uniform density of 28.0 nC/m lies along the line y = -15.0 cm, between the points with coordinates x = 0 and x = 32.0 cm
A solenoid of length 4.5 cm and diameter 0.85 cm is wound with 181 turns per cm. The current is decreasing at a rate of 36.6 A/s. What is the induced emf in one of the windings
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