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A round pipe of varying diameter carries petroleum from a wellhead to a refinery. At the wellhead the pipe\'s diameter is 50.5 cm (0.505 m) and the flow speed of the petroleum is 10.5 m/s. At the refinery the petroleum flows at 5.75 m/s. What is the volume flow rate of the petroleum along the pipe and what is the pipe\'s diameter at the refinery?
The spaceship Intergalactica lands on the surface of the uninhabited Pink Planet, find the acceleration due to gravity on the Pink Planet\'s surface by means of a simple pendulum of length 1.06 m
A 0.020-kg bullet is shot horizontally and collides with a 1.35-kg block of wood. The bullet embeds in the block, what was the original speed of the bullet
Just by the impact, the clay has speed v0 = 9 m/s, and the disk is rotating clockwise with angular speed w0 = 0.4 rad/s. Just following the impact, what is an angular speed of the combined system of wheel plus clay.
What are the following values about the central axis at the instant the torque has been applied for 195ms? The angular momentum of disk.
A 1500kg car skids to a halt on a wet road where coefficient of friction = 0.46. How fast was car traveling if it leaves 68m long skid marks.
The gravitational force between two masses M and m seperated by a distance r is 40 N. What is the new force when this distance is halved
Suppose you see two main-sequence stars of the same spectral type. Star 1 is dimmer in apparent brightness than Star 2 by a factor of 100. What can you conclude? (Overlook any effects that might be caused by interstellar dust and gas.)
A slide projector has a lens of focal length 150. mm. An image 100. cm × 100. cm is formed of a slide whose dimensions are 50.0 mm × 50.0 mm
Consider a disk of radius R = 41.0 cm and thickness t = 1.1 cm, with a nonuniform volume charge density given by ? = A, If A = 510 ?C/m4, what is the total charge of this disk
The resolution of the eye is ultimately limited by pupil diameter. What is the smallest diameter spot an eye can produce on the retina if pupil diameter is 4.45? Assume light with a wavelength of = 600 .
What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 570nm
A system of 1219 particles, each of which is either an electron or a proton, has a net charge of -6.640×10-17 C. How many protons are in this system (exactly)
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