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Many cultures around the world still utilize a simple weapon called ablowgun, a tube with a dart that fits tightly inside. A sharp breath into the end of the tube launches the dart. When exhaling powerfully, a healthy person can supply air at a gauge pressure of6.0 kPa.
What force does this pressure exert on a dart in a 1.4-cm-diameter tube?
A spherical conducting shell has 12 microcoulombs of positivecharge inside on it. The radii of the shell are r(inner)=12 cm and r (outer)=2r(inner). A particle of -4 microcoulombs is placed at the center of the shell.
a 72 mm focal-length lens is used to focus an image on the film of a camera. the maximum distance allowed between the
A 25 turn circular coil of length 5.5 cm produces a magnetic field of magnitude 2.5 mT at its center. Find the current in the lamp
Three charged particles are placed at corners of an equilateral triangle of side 1.20m. The charges are + 7.0 mc,-8.0 mc and -6.0 mc compute the magnitude and direction of the net force on each due to the other two.
You attach a meter stick to an oak tree, such that the top of the meter stick is 2.67 meters above the ground. how high above the ground was the acorn before it fell
Illustrate what is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road?
An 7.60-cm-diameter, 310 sphere is released from rest at the top of a 1.70-m-long, 20.0 incline. What is the sphere's angular velocity at the bottom of the incline
A 2.00-kg mass object traveling east at 20.0 m/s collides with a 3.00-kg mass object traveling west at 10.0 m/s. After the collision, the 2.00-kg mass has a velocity 5.00 m/s to the west. how much kinetic energy was lost during the collision ?
a 75 kg swimmer dives horizontally off a 500 kg raft. if the divers speed immediately after leaving the raft is 4 ms
In the figure below, a particle moves along a circle in a region of uniform magnetic field of magnitude B = 3.50 mT. What is the radius of the circle
A wheel of radius 0.6 m starts from rest and accelerates without slipping with an angular acceleration of 2.0 rad/sec2 for 10 s. How far does the wheel travel in this time
What is the rate of change entropy of the first reservoir.
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