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A solid wood door 1.00 m wide and 2.00 m high is hinged along one side and has a total mass of 40.0 kg. Initially open and at rest,the door is struck at its center by a handfuIof sticky mud w ith mass O.5 kg, travelling perpendicular to the door at 12.0 m/s just before impact. Find the final angular speed of the door.
five kilograms of saturated vapor water at 1 mpa is contained in a cylinder fitted with a movable piston. this system
10 kg of refrigerant r-134a initially at 5 bar and 160 oc undergoes an isothermal internally reversible compression
air at 300 k and 200 kpa is throttled by a valve to pressure of 100 kpa. if the valve is adiabatic and the change in
the 1.3-lb collar slides with negligible friction on the fixed rod in the vertical plane. if the collar starts from
A 25-g bullet is traveling with a velocity of 425 m/s when it impacts and becomes embedded in 2.5 kg wooden block. The block can move vertically without friction. Determine a) the velocity of the bullet and block immediately after impact,
a projectile is launched from point a and lands on the same level at d. its maximum altitude is h. determine and plot
helium in an ideal diesel cycle is compressed from 4 l to 0.25 l and then it expands during the constant pressure heat
Consider the system shown in Fig, if a change of 0.7 kPa in the pressure of air causes the brine-mercury interface in the right column to drop by 5 mm in the brine level in the right column while the pressure in the brine pipe remains constant, de..
determine (a) the propagation, attenuation, and phase constants, (b) the phase velocity, (c) the wavelength, (d) the intrinsic impedance, (e) the skin depth, and (f) the average power density. If the range is considered to be the distance at which..
consider the case of a knife whose leading edge is the z-axis and the blade covers the half plane defined by x 0.
Estimate the temperature in °C and °F at 33,000 ft, an elevation at which many commercial airplanes fly.
1. Baking a potato takes a long time, even in a hot oven, because the inside of a potato warms up very slowly. e. Why Can a Microwave do this job more efficiently and quicker? f. What is a potato clock and why does it work?
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