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What is the average speed at which water enters the hose at the pump on a fire truck?
Hose radius = 0.0300m, nozzle radius = 0.0200m
Water travels at an average speed of 4.00 m/s during the nozzle when nozzle is 15.0m above fire truck.
Lift on an Airplane. Air streams horizontally past a small airplane's wings such that the speed is 70.0 m/s over the top surface and 50.0 m/s past the bottom surface. If the plane has a wing area of 16.6 m2 on the top and on the bottom, what is th..
A 500 kg elevator starts from rest. It moves upward for 2.00 s with constant acceleration until it reaches its cruising speed, 1.75 m/s. What is the average power of the elevator motor during this period
A student makes a simple generator by using a single square loop 24 cm on each side. The loop is then rotated at a frequency of 60 Hz in a magnetic field of 0.044 T.
A steel ball is fastened to a cord and is released from rest when the string is horizontal. At the bottom of its path theball strikes a steel block initially at rest on a frictionless surface as indicated. The collision is elastic.
q1. a spring with spring constant 14 hangs from the ceiling. a ball is attached to the spring and allowed to come to
An unknown resistor R is connected to a 15.0 ? resistor, and the combination is attached to an ideal battery. Determine the two possible values for R
As people sing in church, the sound level everywhere inside is 107 dB. No sound is transmitted through the massive walls, but all the windows and doors are open on a summer morning. Their total area is 23.0 m2. (a) How much sound energy is radiated i..
X rays diffract from a crystal in which the spacing between atomic planes is 0.188 nm. The second-order diffraction occurs at 59.0 degrees. What is the angle of the first-order diffraction?
1. a resonant circuit in a radio receiver is tuned to a certain station when the inductor has a value of 0.157 mh and
A uniform rod of mass 3.35×10?2kg and length 0.430m rotates in a horizontal plane about a fixed axis through its center, What is the angular speed of the rod after the rings leave it
What is the magnetic field amplitude of an electromagnetic wave whose electric field amplitude is 15V/m
A ball of mass 0.640 kg moving east (+x direction) with a speed of 3.20 m/s collides head-on by a 0.480 kg ball at rest. If the collision is perfectly elastic, what will be the speed and direction of each ball after the collision?
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