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A 6.0 cm diameter horizontal pipe gradually narrows to 4.0 cm.When water flows through this pipe at a certain rate, the gaugepressure in these two sections is 32.0 k Pa and 24.0 k Pa,respectively. What is the volume rate of flow?
A gun shoots small plastic balls. The ball falls 1.2 m while traveling horizontally 5.1 m. Calculate the speed the ball leaves the gun
A horizontal spring is lying on a frictionless surface. One end of the spring is attached to a wall, What is the speed of the object at the instant when the spring is stretched by0.042 m relative to its unstrained length
A gun is fired vertically into a 1.9 kg block of wood at rest directly above it. If the bullet has a mass of 21.00 g and a speed of 195 m/s, how high would the block rise into the air after the bullet becomes embedded in it.
A 7.40-nC charge is positioned 1.70 m from a 4.80-nC charge. (a) Find the magnitude of electrostatic force that one particle exerts on the other. (b) Is the force attractive or repulsive.
If you hold a horizontal metal bar several centimeters above the ground and move it through grass, each leaf of grass bends out of the way. How can it exert enough force on a leaf of grass to shear it off
A horizontal water main with a cross-sectional area of 186 cm2 necks down to a pipe of area 57.8 cm2. Determine the flow rate through the system
A flat coil enclosing an area of 0.12 m2 is rotating at 61 rev/s, with its axis of rotation perpendicular to a 0.20 T magnetic field. what is the maximum voltage induced in the coil
An earth satellite moves in a circular orbit with an orbital speed of 6300 m/s. Find the time of one revolution of the satellite
During the investigation of a traffic accident, police find skid marks 90.0 m long. Estimate the speed of the car when the brakes were applied
A spherical satellite with a radius of 75m is spinning over its own axis with an angular speed of 232rad/s. What is the angular momentum after the failure
Two gliders are moving on a horizontal frictionless air track. Glider 1 has mass m1 = 196.7 g and is moving to the right (positive x-direction) with speed 2.687 m/s. What is the mass of glider 2
A 3.0-kg cylinder falls vertically from rest in a very tall, evacuated tube 20m above the surface of the earth. what is its kinetic energy just before it hits the earth
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