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1. Assuming that the diameters of 1000 brass plugs taken consecutively from a machine, form a normal distribution with mean 0.7515 cm and standard deviation 0.0022 cm. How many of the plugs are likely to be rejected if the approved diameter is 0.752± 0.004.
2. A machinist is making engine parts with axle diameter of 0.7 inch. A random sample of 15 parts shows mean diameter 0.742 inch with a standard deviation of 0.04 inch. On the basis of this sample would you say that the work is inferior?
3. A random sample of size 56 from a normal population showed a mean of 63 and a sum of squares of deviation from the mean equals to 180. Can this sample be regarded as taken from the population having 65 as mean at 1% level of significance?
, determine the speed of the boy at the instant = 4 . Neglect the size of the limb. When = 0, = 8 so that and are coincident, i. e., the rope is 16 long.
Assuming a coefficient of static friction equal to 0.2 at the common surface, find the maximum torque that may be transmitted by the flywheel without slippage.
A rigid tank contains water vapor at 200 degrees celcius and unknown pressure. When the tank is cooled to 150 degrees celcius, the vapor starts condensing. Estimate the initial pressure in the tank.
that makes p1 and p2 both equal to atmospheric pressure. the flow rate in the tank and the tube are proportional to the
describe possible methods that can be used to separate materials such as polymers, aluminium alloys and steels from one another.
A 200 kg crate is to be supported by the rope and pulley arrangement shown. Determine the magnitude and direction fo the force P that must be exerted on the freee end of the rope to maintain equillibrium.
suppose that you have a basin of 35c warm water that you use to run a heat engine that cools its substance with air at
Calculate spring stiffness for which the oscillator becomes unstable (gravity in the negative y direction) verify with SW Simulation (study 1)
consider a stable nocturnal boudary layer in a 12 hr night. the wind is blowing at 5 ms and the surface is cooled with
A 60 ohm, 40 ohm, and 20 ohm resistor are each connected in parallel across a 120VAC source. What is the total current.
a fully loaded lorry has a mass of 10 tonnes and is travelling along a road at uniform velocity when the brakes are applied and the lorry is brought to rest. if the deceleration is 2m/s2 and the coefficient of rolling friction is 0.15, determine t..
a vertical piston-cylinder device initially contains 0.25 m3 of air at 600 kpa andnbsp300degc. a valve connected to the
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