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A bubble floats up from the bottom of a lakeρ=1000kg/m3, up to the top. It's volume when itreaches the top is twice as large compared to when it was on thebottom. How deep is the lake?
What is the efficiency of a pump that uses 3.5kW of electrical power in raising 200 litters of water through a height of 12m in 10 seconds
A horizontal 810-N merry-go-round of radius 1.30 m is started from rest by a constant horizontal force of 45 N applied tangentially to the merry-go-round
an elevator has mass 680kg not including passengers. the elevator is designed to ascend at constant speed a vertical
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 20.0 m/s at an angle 49.0 degrees, What is the distance between the two girls
A 211kg rock sits in full sunlight on the edge of a cliff 4.90m high. The temperature of the rock is 30.2?C. what is the final temperature of the rock-water system
Light of wavelength 589 nm is incident on a single slit that is 0.720mm wide, and the resulting diffraction pattern is observed on a screen 2.00m away. What is the distance between the two dark fringes on either side of the central bright fringe
if harry's dog weighs 25N and harry lifts him up to a height of 10 meters, how much work does Harry do
You're carrying a 3.40 m-long, 23 poles to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip.
A 0.800 kg block is attached to a spring with spring constant 14 N/m. While the block is sitting at rest, What is the amplitude of the subsequent oscillations
q1. a single bead can slide with negligible friction on the stiff wire that has been bent into a circular loop of
A 2.6-kg cart is rolling along a frictionless, horizontal track towards a 1.7-kg cart that is held initially at rest. What is the total momentum of the system of the two carts
question if a force of 10 n is needed to open an 100 cm wide door when applied at the edge opposite the hinges what
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