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The pressure in a section of horizontal pipe with a diameter of 2.0 cm is 147 kPa. Water flows through the pipe at 2.80 L/s. Assume laminar nonviscous flow. If the pressure at a certain point is to be reduced to 104 kPa by constricting a section of the pipe,
what should the diameter of the constricted section be?
Two people are pulling a mule, assume the F1 is 110 N and F2 is80 N. I found the single force that is equivalent to the two forcesfor magnitude and direction but I need to find out the force that a third person would have to exert on the mule to make..
The activity (decays per second) of a certain radionuclide is observed to decrease by 87.5% in 30 hours. What is the half life T(1/2) of the radionuclide
You are designing a small coil (called a search coil) to measure magnetic fields. It is to have a diameter of 3.80 cm, How many turns should the coil have
When an automobile moves by constant speed down a highway, most of the power developed by the engine is utilized to compensate for the mechanical energy loss due to frictional forces exerted on the car with the air and the road.
suppose you adjust your garden hose nozzle for a hard stream of water. you point the nozzle vertically upward at a
A line of positive charge is formed into a semicircle of radiusR. The charge per unit length along the semicircle isdescribed by the expressionλ=λ0/θcosθ. Calculate theelectric field at the center of the curvature.
With the engines off, a spaceship is coasting at a velocity of+220 m/s through outer space. The ship carries rockets thatare mounted in friing tubes, What is the velocity of the rocket
A capacitor is connected across an ac generator whose frequency is 753 Hz and whose peak output voltage is 140 V. The rms current in the circuit is 3.0 A. What is the capacitance of the capacitor
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with amplitude of 20.0 cm.
Starting from rest, a 12 cm diameter compact disk takes 3.0s to reach its operating velocity of 2000 rpm. Assume angular acceleration is constant. How much torque is applied to the disk
Unpolarized light of intensity I0 is incident on the following arrangements of polarizing sheets. The first polarizer is oriented vertically; the second is oriented so it makes an angle of 30o by the vertical; the third and last polarizer makes an an..
A lens that has a focal length of 8.90 cm is used as a magnifying glass. (a) To obtain maximum magnification and an image that can be seen clearly by a normal eye, where should the object be placed? (b) What is the magnification?
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