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The speed of sound in air is approximately 340 m/s. The speed of sound in steel is approximately 5900 m/s. If your friend strikes one end of a steel pipe with a hammer while you listen at the other end, you will hear two distinct sounds: one traveling through the air and the other traveling through the steel pipe. If the pipe is 700 meters long, how much time elapses between the two sounds?
Water flows steadily from an open tank. The elevation ofpoint 1 is 10.0m and the elevation of points 2 and 3 is2.00m. find the discharge rate in cubic meters per second
If the speed of a car is increased by 60 percent, find by what factor will its minimum braking distance increased, assuming all else is the same
A 28.0 uF capacitor is charged to 160 uC and then connected across the ends of a 4.60 mH inductor. Find the maximum energy stored in the inductor
A car travels on a long, straight highway at a constant speed of 30 m/s when it passes a stationary police motorcycle. How far will the motorcycle travel before it catches the car
Two horizontal forces, 249 N and 165 N, are exerted in opposite directions on a crate. What is the net horizontal force on the create? Be sure to point to the direction of the net force.
A skateboarder shoots off a ramp with a velocity of 6.6m/s directed at an angle of 58 degrees above the horizontal. The end of the ramp is 1.2m above the ground. Let the x axis be parallel to the ground,+y direction be vertically upward, and take ..
you have a concave spherical mirror with a 11.5-cm radius of curvature. you place an object on the mirrors axis 17.7 cm
suppose that after walking across a carpeted floor you reach for a doorknob and just before you touch it a spark jumps
A cat is running at 8.0 m/s and trying to catch a mouse, who has a tenth of the mass of the cat. What is the speed of the mouse
A hiker walks along the city streets 7 km north, then 4 km east. What is the magnitude of the resulting displacement vector?
amtraks high speed train the acela utilizes tilt of the cars when negotiating curves. the angle of tilt is adjusted so
A balloon is initially stationary and full of air. The air in the balloon has a mass of 2 g. What speed does the balloon have
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