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A light ray is incident normally to the long face (the hypotenuse) of a 45° -45° -90° prism surrounded by air, as shown in the figure below. Calculate the minimum index of refraction of the prism for which the ray will totally internally reflect at each of the two sides making the right angle.
Water flows through a pipe with circular cross section. The fluid has a radius of 5.0 cm and flows at 2.0m/s. The output has a radius of 2.50 cm. find the output velocity.
When the starter motor on a car is engaged, there is a 330A current in the wires between the battery and the motor, What minimum diameter can the wires have if the voltage drop along the wires is to be less than 0.45V
The pressure in a traveling sound wave is given by the following equation. p = (2.1 Pa) sin ?[(1.40 m-1)x - (280 s-1)t], Find the pressure amplitude and Find the wavelength
Now, as both pipes vibrate at their fundamental frequencies, the beat frequency of 17 Hz is heard. How many centimeters were cut off the end of the second pipe? The speed of sound is 333 m/s.
An airplane is flying in a horizontal circle at a speed of 520 km/h. If the wings of the plane are tilted 34° to the horizontal, what is the radius of the circle (in m) in which the plane is flying
The motion of a 25.0 kg mass on the end of a string is uniform circular motion. The magnitude of the tangential velocity of the mass is 5.0 m/s, Calculate the angular momentum of the mass
In a Millikan oil-drop experiment (Section 22-8), a uniform electric field of 3.91 x 105 N/C is maintained in the region between two plates separated by 6.80 cm
The Hall effect can be used to determine the density of mobile electrons in a conductor. Find the density of mobile electrons in the material
A parachutist with a camera, both descending at a velocity of 12 m/s, releases that camera at an altitude of 120 m.
A bat flying in a cave emits the sound pulse and receives its echo in 3.5 s. How far away is the cave wall.
A platform is rotating at an angular speed of 2.1 rad/s. A block is resting on this platform at a distance of 0.33 m from the axis. determine the smallest distance from the axis
A person pushes the shopping cart with a force of 100 N acting down at 45 degrees. Of the cart travelled at a constant speed of 1.00 meters per second what is the value of combined retarding force acting horizontally on the cart due to friction an..
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