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A satellite is to be despun by means of a tangential-release yo-yo mechanism consisting of two masses, 3 kg each, wound around the midplane of the satellite. The satellite is spinning around its axis of symmetry with an angular velocity us ¼5 rad/s. The radius of the cylindrical satellite is 1.5 m and the moment of inertia about the spin axis is C ¼ 300 kg$m2.
(a) Find the cord length and the deployment time to reduce the spin rate to 1 rad/s.
(b) Find the cord length and time to reduce the spin rate to zero.
A monatomic ideal gas ( = 1.67) is contained within a box whose volume and pressure are 3.1 m3, Find the speed of sound in the gas
A 1,000-W motor powers a hoist used to lift cars at a service station. If the original motor is replaced with one rated at 2,000 W, how long would it take to complete this task
You have been instructed to calculate the amount of time it would take to drain 3/4 of a full, open tank in the shape of a octagon. Water flows from the tank at a rate (Q) that decreases with time.
A model rocket is fired vertically from rest. It has a net acceleration of 15.5 m/s2. How long after liftoff does the rocket return to the ground
the drawing shows an edge-on view of two planar surfaces that intersect and are mutually perpendicular. surface 1 has
The amount of heat per second conducted from the blood capillaries beneath the skin to the surface is 240 J/s. The energyis transferred a distance of 2.0 x 10^-3 m through a body whosesurface area is 1.6 m^2. Assuming that the thermal conductivity..
1. calculate the speed in ms at which earth revolves about the sun. you may assume the orbit is nearly circular.2. the
You are inside an enclosed truck with no windows and you wish to keep track of the truck's motion. To do this, you hang a mass on the end of a string, as shown. If the angle of the string is 6.2 degrees from the vertical (for zero degrees the mass ha..
A cyclist has a speed of 5.0 m/s when she begins to coast down a hill, Calculate the work done by gravity on the cyclist
In state-of-the-art vacuum systems, pressures as low as 1.00 10-9 Pa are being attained. Calculate the number of molecules in a 1.80-m3 vessel
A flight attendant pulls her 63-N flight bag a distance of 277-m along a level airport floor at a constant velocity. The force she exerts is 35N at an angle of 57° above the horizontal. Determine the work completed by the force of friction on flig..
the focal length of a concave mirror is 16.5 cm. an object is located 39.5 cm in front of this mirror. how far in front
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