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A circular pipe has a diameter of 3 cm and then narrows to 2 cm. When water (density= 1000kg/m^3) flows during at a certain rate, the pressure is 24.0 kPa in the smaller section and 32.0 kPa in the larger section. There is no height change. What is the speed of water in each section?
An object is initally spinning at 57.7 rad/s counter-clockwise, How many revolutions will the object make before it stops
A pen contains a spring with a spring constant of 231 N/m. When the tip of the pen is in its retracted position; the spring is compressed 5.70 mm from its unstrained length. In order to push the tip out and lock it into its writing position, the spri..
Young's modulus for earth can be approximated by 5.5*10^5 MN/m^2 and the corresponding shear modulus by 2.0*10^5 MN/m^2. How far from the station did the earthquake take place
If an object is placed 15 cm in front of a concave mirror with aradius of curvature of 20 cm, what are the image characteristics
i want to measure accurately the time it takes for the drum of my clothes dryer to make one rotation. since the door on
Three equal point charges (+2.0 nC) are located at the corners of an equilateral triangle with sides of 2 meter length. find the potential at the midpoint of any one of the sides of triangle
a 3.49 kg 25.33 cm diameter turntable rotates at 221 rpm on frictionless bearings. two 700 g blocks fall from above hit
A metallic sphere has a charge of +3.7 nC. A negatively charged rod has a charge of -6.0 nC. When the rod touches the sphere, 7.2 109 electrons are transferred. What are the charges of the sphere and the rod now?
A 0.300 kg hammer is moving horizontally at 6.00 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. Calculate the duration of the impact
An 90.0 kg skydiver jumps out of a balloon at an altitude of 1 180 m and opens the parachute at an altitude of 175m. find the speed of the diver when he lands on the ground
Occasionally, huge ice bergs are found floating on the ocean's currents. Assume one such ice berg is 122 kilometer long, 35.1 kilometer wide and 207 meter thick. Determine how many years would it take before the ice melted
a 1.5- block rests on top of a 7.5- block. the cord and pulley have negligible mass and there is no significant
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