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A water pipe decreases in diameter from 16 cm to 8 cm. In the wider section the average velocity is 30.0cm/s.
calculate the average velocity in the narrow section?
a block on a frictionless horizontal surface is attached to a spring (k=30 N/m). the mass is displaced to the right of equilibrium and released from rest. calculate amplitude of oscillations
Consider a Boeing 777-200 airplane of wing span 60.93 m cruising horizontally at Mach 0.785 (about 828 km/h) due north in a region where the earth's magnetic field is .98*10
A racket ball is struck in such a way that it leaves the racket with a speed of 4.87m/s in the horizontal direction. Find the height of the racket ball when it left the racket
Two coils have the same number of circular turns and carry the same current. Each rotates in a magnetic field acting perpendicularly to its axis of rotation. What is the radius (in cm) of coil 2
A spherical brass shell has an interior volume of 1.51 x 10-3 m3. Within this interior volume is a solid steel ball that have a volume of 0.53 x 10-3 m3. What is the volume of mercury that spills out of the hole
A marble rolls down an incline of 30 degrees. If the marble is initally at rest at the top ofthe incline of length 2.0 meters what will the speed of the marble be at the bottom of the incline
A wire is bent to form a circle whose diameter is 10cm. Find the maximum torque that the magnetic field can exert on the wire
A point charge Q is located at the center of a very thin, spherical metal shell. what is the electric potential of the shell
The track for a racing event was designed so that riders jump off the slope at 30 angle, from a height of 5 ft. Determine the maximum height he attains
Why is the normal force of an object zero at the top of a hill (such as the hill of a roller coaster)? I'm doing a circular motion unit and I found a few problems where this is the case, and I was wondering how it works.
In what direction should the plane head in order to fly.
A camera flash delivers 3.5kW of light power for 1.9ms, Find the total momentum carried by the flash p
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