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A uniform, cylindrical pulley of mass M=14.4 kg and radius R=0.478 m rotates freely about a fixed horizontal axis. A block of mass m=2.91 kg, which moves downward, is attached to a string which is wrapped around the pulley. What is the magnitude of the angular acceleration of the pulley?
A 85.0 kg fullback is running at 3.86 m/s to the east and is stopped in 0.800 s by a head-on tackle by a tackler running due west. Calculate the impulse exerted on the tackler
A car and a motorcycle is racing from rest. The motorcycle first takes the lead because its constant acceleration am = 8.40 m/s2, How long does the car take to reach the motorcycle
q1. an iron bolt of mass 63.4 g hangs from a string 32.6 cm long. the top end of the string is fixed. without touching
Four identical point charges (+3.17nC) are placed at the corners of a rectangle, what is the potential at the geometric center of this rectangle
You work for a moving company and are given the job of moving two crates (masses are 130kg and 280kg) held together by a rope attached between the two. You pull on a rope attached to the larger crate giving the system the acceleration of 0.29m/s2. Wh..
A 0.335 kg iron horseshoe that is initially at 420°C is dropped into a bucket containing 20.3 kg of water at 22.1°C. What is the final equilibrium temperature (in °C)? Neglect any heat transfer to or from the surroundings. Do not enter units.
In an X-ray tube electrons strike a tungsten target (W or "wolfram") after being accelerated through a potential difference V0. Estimate the minimum value of V0 required to observe the Kalpha peak.
We will use solar heater as input in steam power cycle for plant. Water initially has temperature of 40 degree, find the Isentropic efficiency of turbine
ccccthe Zambesi river in Africa rushes over Victoria Falls at a rate of 25 x 10^6 gallons per minute. The falls are 108 m high, 1 gallon equals 3.785 x 10^-3 m^3 (or 0.1337 cubic foot), and the water has a density of 1.00 x 10^3 kg/m3 (each cubic foo..
Air at 1 atm, 36C, 20% relative humidity enters an evaporative cooler at 4 m^3/min. find the outlet humidity ratio
The work function of a particular substance is 4.15 × 10-19 J. What is the photoelectric cutoff wavelength for this material
An air mass has a temperature of 68F at 970hPa with a mixing ratio of 5 g/kg. Without any condensation or mixing, the air mass now has a temperature of 50F and a pressure of 750hPa. Find the initial and final values of:
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