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A Pelton turbine with a head m is considered. The pipe between the reservoir and the turbine is km long with a diameter m and a friction coefficient λ.015. The water jet leaving the nozzle has a diameter Dj cm and the runner diameter is .5 m. The efficiency of the turbine is η %. Assuming the losses in the nozzle of the form 0.04 V2/(2g), perfect velocity conditions between the water jet and the runner velocity, the water spreads at β° from the runner blades and neglecting the losses on the runner blades, determine:
Calculate how much water will flow in one minute through 200 millimeter of a tube 1.5 millimeter in diameter if the pressure across the tube is 10cmHg
The rubidium isotope 87 Rb is a ? emitter with a half life of 4.9 × 10^10 y that decays into 87 Sr. It is used to determine the age of rocks and fossils. calculate the age of these fossils
A 0.300 kilogram mass, attached to the end of a 0.750 meter string, is whirled around in a smooth level table. determine what maximum linear speed can the mass have
An automobile emits 20 lbs of CO2 per gallon of gasoline burned. how many billions of lbs of CO2 are emitted every year
An adiabatic, steady-flow heat exchanger condenses 11,000 kg/h of saturated steam at 300 kPa to a saturated liquid also at 300 kPa. Estimate the rate of energy destruction (in kW) during this process
An electrical circuit is connected as shown in the figure on the right. It contains two identical batteries. Find the current through each of the bulbs and the current through each of the batteries.
Assume the square wire loop is replaced with a smaller one, made of the same wire that is 0.02 m on a side, half as long as the original.
The supertanker Globtik London has a mass of 220,000 metric tons when empty and it can carry up to 440,000 metric tons of oil when fully loaded. What is the draft of the fully loaded tanker
A mechanic pushes a 2.20 x10^3 kg car from rest to a speed of v, doing 5400 J of work in the process. During this time, the car moves 28.0 m. Neglecting friction between car and road, find each of the following.
The hydraulic lift in a service station is capable of raising cars with a mass up to 2000kg. calculate the diameter of the driving piston if the lifting is to be accomplished with a force not to exceed 100N
As your bus rounds a flat curve at constant speed, a package with mass 0.300kg , suspended from the luggage compartment of the bus by a string 50.0cm long, What is the speed of the bus
there are 3 point charges q14.010-6 c q22.010-6 c q3-3.010-6 c.a. find the electric potential at points a and b.b. find
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