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Water flows in a vertical pipe of 0.15 m diameter at a rate of 0.25 m3/s , and has a pressure of 250 kPa at an elevation of 25 m. Determine the velocity head and pressure head at elevations of 20 m and 50 m.
A reaction has been designed to be carried out in a 2 ml total volume. It requires a final NAD concentration of 3 mM. If the protocol allows 60 µl for the NAD addition, what concentration would you make up the stock solution
To avoid handling the powder form of this compound you decide to make up the whole bottle rather than attempt to weigh out a portion. The compound comes in 200 mg batches. What volume would you add to one of these bottles to make up a 10 mM soluti..
A capacitance C and an inductance L are operated at the same angular frequency. A) At what angular frequency will they have the same reactance? Express your answer in terms of the variables C and L. B) If L = 5.30mH and C = 3.40\mu F , what is the nu..
In 0.975 s, a 14.1-kg block is pulled through a distance of 3.32 m on a frictionless horizontal surface, starting from rest. By how much does the spring stretch
Two objects with masses of 3.90 kg and 6.20 kg are connected by a light string that passes over a frictionless pulley, as in the figure below. (The figure shows a pulley with the two objects on opposite sides hanging vertically) (a) Determine the ..
Calculate delta G in Joules/mol at 25 C when concentration of [H] is .00000010 M and [OH] is 1.0 x 10^-11.
A horizontal wire rod is free to slide on a vertical conducting. The wire has mass 7 kg and length 7 m, find the terminal velocity of the wire
A 0.79-kg block is hung from and stretches a spring that is attached to the ceiling. What is the mass of the second block
A buffer was prepared by dissolving 2.26 grams of phenylacetic acid (HC6H5CH2CO2, Ka = 4.9x10-5) and 3.25 grams of potassium phenylacetate (KC6H5CH2CO2) in enough water to yield 750. mL of buffer solution. What is the pH of this buffer solution
The position of a particle is given by the expression x = 4.00 cos (2.00?t + ?/4), where x is in meters and t is in seconds. Determine the position of the particle at t = 0.350 s
Two persons on ice skates stand face to face and then push each other away. Their masses are 60kg and90kg. find the ratio of their speeds immediately afterwards. which person has the higher speed?
A 1.6 kg object oscillates with simple harmonic motion on a spring of force constant 400.0 N/m. What is the total energy of the object and the spring
The double slit experiment explains wave interference. Describe a particular innovation in a specific field
A light spring with a force constant of 13N/m is connected to a wall and a 1.2-kg toy bulldozer. When the electric motor in the bulldozer is turned on, What is the numerical value of this coefficient of friction
Which of the planets fits the following description: "a solid, cool surface, with occasional dust clouds and a thin CO2 atmosphere".
A small light cylinder and a large heavy cylinder are released at the same time and roll down a ramp without slipping. Which one reaches the bottom first
A series RLC circuit is connected across a 10.0 kHz source. The 1.2 H inductor and 1000 ? resistor are fixed whereas the capacitor is variable. What average power will be dissipated
The drawing shows a person looking at a building on top of which an antenna is mounted. How tall is the antenna
At a given instant, a particle with a mass of 5.00 x 10^-3 kg and a charge of 3.50 x 10^-8 C has a velocity of magnitude 2.00 x 10^5 m/s in the +y direction. What is the magnitude and direction of the magnetic force on the particle
A super tanker with the mass of 3.36 × 109 kg is moving with a constant velocity. Its engines generate a forward thrust of 4.11 × 105 N. Determine (a) magnitude of the resistive force exerted on the tanker by the water and (b) magnitude of the upward..
Some human nerve cells have a long, thin cylindrical cable (the axon) from their inputs to their outputs. Determine the resistance of the fluid in this axon
22g of nitrogen gas at STP are pressurized in an isochoric process to a pressure of 30atm. What is the pressure ratio
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