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A standing wave forms in a closed pipe, such as in a pipe organ. The pipe is 12 cm long, and the speed of sound is 340 m/s. What is the fundamental frequency in this pipe?
A car initially traveling at 23.6 m/s undergoes a constant negative acceleration of magnitude 1.70 m/s squared after its brakes are applied. How many revolutions does each tire makebefore the car comes to a stop, assuming the car does not skid and th..
A particle of charge of +3.50 10-6 C is 12.0 cm distant from a second particle of charge of -2.10 10-6 C. Calculate the magnitude of the electrostatic force between the particles. N
A given copper wire has a resistance of 5.07 at 20.0°C while a tungsten wire of the same diameter has a resistance of 4.66 at 20.0°C. At what temperature will the two wires have the same resistance?
light from a helium-neon laser wavelength633 nm is focused through a pinhole prior to illuminating a 1.00 mm diameter
A man pushes a 24-kg box across a frictionless floor. The box begins moving from rest. How far has the man pushed the box in 3 s
A simple pendulum has a mass of 0.150 kg and a length of 1.00 m. It is displaced through an angle of 10.0° and then released. What is the maximum restoring force
A force of 90 N is applied to a wagon (mass 40 kg) at an angle of 30° to the horizontal. If the frictional force is 27.94 N, the magnitude of the resulting acceleration of the wagon is ___m/s2.
A pump lifts 200kg of water per hour a height of 5 meters. Find the minimum necessary power output rating of the water pump in horsepower and watts
This demonstration is more complicated because it involves a vector. For a rotating wheel, the direction of the angular momentum, , is found by curving the fingers of your right hand in the direction of the rotation, your thumb then points along .
A cannonball is fired from a canon at an angle of 30 degrees to the horizontal.The cannonball's initial velocity is 40 m/s. What is the greatest height the cannonball will attain
An electron accelerated from rest through a voltage of 520 V enters a region of constant magnetic field. If the electron follows a circular path with a radius of18 cm, what is the magnitude of the magnetic field?
Show that the orthogonal transformation preserves the dot product i.e Au dot Av = u dot v. Hence or otherwise show that the angles between 2 vectors are preserved under the orthogonal transformation.
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