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Astudent builds a11.0m long beam that rotates about an axis at one end (see figure below). Its moment of inertia is 3540 kg.m2. When the studentapplies a forceFto the other end of the beam,the beam's angular acceleration is 3.10 rad/s2(ignore gravity).
(a) Find the torque acting on the beam.
(b) Calculate the force F that the student applied.
(c) The student then decides to place at ball at the end of the beam so that the rotating beam flings the ball through the air. Briefly explain the physics of why it would be a good idea for the student to put the ball-flinging apparatus on wheels.
Two microscope slides are stuck together and touching on one side where n=1.2 and wedged open on the other where n=1.5. These slides sit in air. How many fringes are there for the same slide configuration when it sits in water rather than air
In order to pass a physical education class at a university, a student must run 1.0 meter in 11.5 minute. Find what constant acceleration does she need
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A ball is tossed directly upward at an initial speed of 5.7 meter per second and is caught when it falls back down to the thrower's hand, Determine the average speed for the ball journey
A large cannon is fired from ground level over level ground at an angle of 30o above the horizontal. The muzzle speed is 980 m/s. Neglecting air resistance, the projectile will travel what horizontal distance before striking the ground?
a 22 mh inductor is connected across an ac generator that produces a peak voltage of 11 v.what is the peak current
A 220 g top spinning at 14 rev/s makes an angle of 30° to the vertical and precesses at a rate of 1 rev per 8.0 s. what is the moment of inertia of the top
In a double-slit experiment the distance among slits is5.4 mm and the slits are 1.6 m from the screen. Two interference patterns can be seen on the screen: one due to light with wavelength 450 nm, and the other due to light by wavelength 655 nm.
Find the ratio of the magnitudes of the Earth's orbital angular momentum and its rotational angular momentum
an electron and a proton are each accelerated through a potential difference pf 10.0 million volts. Find the momentum ( in MeV/c) and the kinetic Energy ( in MeV) of each and compare with the results of using the classical Formular.
a car travels around a level circular track 500 m in diameter. if the coefficient of static friction between the tires
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