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A pendulum consists of a uniform disk with radius 10 cm and mass 800 g attached to a uniform rod with length 500 mm and mass 235 g (see the figure). Calculate the rotational inertia of the pendulum about the pivot. What is the distance between the pivot and the center of mass of the pendulum? ( m) Calculate the period of oscillation.
Particle X has a speed of 0.790 c and a momentum of 5.06×10-19 kgm/s. What is the mass of the particle? What is the rest energy of the particle
q1. a sling-thrower puts a stone 0.250 kg in the slings pouch 0.010 kg and then begins to make the stone and pouch move
The blades in a blender rotate at a rate of 7100 rpm. When the motor is turned off during operation, Find the angular acceleration as the blades slow down
A parallel-plate capacitor has plates of area 3.53 x 10-4 m2. What plate separation is required if the capacitance is to be 1470pF
What happens to the resistance of copper wire after dunking it in liquid nitrogen? and what happens to the resistance of a carbon resistor when you dunk it in liquid nitrogen.
Two point charges, +4.30 ?C and -8.90 ?C, are separated by 2.70 m. What is the electric potential midway between them
An electron starting from rest get 6.3keV of KE in moving from point C to point D. Find the ratio of their speeds at the end of their respective trajectories
a 32.0 kg child slides down a long slide in a playground. she starts from rest at a height h1 of 20.00 m. when she is
A 102 kilogram fireman slides down a pole to the ground floor, 3.3 meter below. The fireman starts at rest and lands with a speed of 4.2m/s. find the average force exerted on the fireman by the pole
A boy drags his 8.00 kg sled at constant speed up a 10.0 degree hill. He does so by pulling with a 40.0-N force on a massless rope attached to the sled. find the coefficient of kinetic friction between sled and snow
Electrons with a speed of 1.3×10^6 m/s pass through a double-slit apparatus. Interference fringes are detected with a fringe spacing of 2.8mm. What will the fringe spacing be if the electrons are replaced by neutrons with the same speed in μm? What s..
A heat engine, in each cycle, takes in 750 J of heat and exhausts 300 J of heat. what is the smallest possible high temperature for the engine cycle
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