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An 85 percent-efficient pump is used to increase the pressure of water in a 10-cm-diameter pipe from 120 to 800 kPa. What is the required horsepower of the pump for a flow rate of (a) 0.015 m3=s, (b) 20 L=s, and (c) 4000 gal/h?
A sample of an unknown substance appears to weigh 15.1 N in air and 9.18 N when immersed in a solvent with density 0.945 g/mL. Find the density of the sample
An airplane black box contains a bunch of unknown resistances and sources of emfs connected in unknown way such that (1) a 9 Ohm resistor across the terminals of the circuit box draws 0.80 A, and (2) an 17 Ohm resistor draws 0.50 A. What resistance w..
During the investigation of a traffic accident, police find skid marks 90.0 m long. Estimate the speed of the car when the brakes were applied
you compress a spring with k3000nm a distance of 0.2m with a block of mass 4kg. you then release the block. it slides
A solid sphere of mass 4.0 kg and radius 0.12 m starts from rest at the top of a ramp inclined 15' degree and rolls to the bottom. What is the linear speed of the sphere when it reaches the bottom of the ramp
A 100-V rms, 60-Hz source is applied to a load impedance Z. The apparent power entering the load is a 140 VA at a power factor of 0.707 lagging. Calculate the complex power
A 0.06-kg lead bullet traveling 298 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs, what is its temperature change
questiona status newtons first law of motion. b a 2-kg object is affecting horizontally with a speed of 4 ms. how much
Find the Center of Mass of hammer which has an iron head of 0.5 kg and a wooden handle of 0.1 kg. To simplify the calculation suppose that the head has the shape of a cuboid of dimensions 1/6 m x 2 cm x 2 cm. suppose similarly that the handle is a c..
at temperatures below the curie temperature tc ferromagnetic materials have two crucial propertiesi they exhibit
a target in a shooting range gallery of a square wooden board of side length s 0.500 meter and mass mt 0.750 kg that
If a four engine jet accelerates down the runway at 2m/s2 and one of the jet engines fails, determine how much acceleration will the other three produce
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