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A solid cylindrical disk has a radius of 0.15 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. When a 45 N force is applied tangentially to the disk,perpendicular to the radius, the disk acquires an angular acceleration of 120 rad/s2. What is the mass of the disk?
How much force is the air exerting on the front cover of your textbook? (Assume that the width and the length of the book are20.3 cm and 28.0 cm, What mass has a weight equivalent to this force
An object moves with constant acceleration 3.30 m/s2 and over a time interval reaches a final velocity of 10.4 m/s. If its initial velocity is 5.2 m/s, what is its displacement during the time interval
A massive starship with rest mass of 8x10^11 kg has a relavistic momentum of magnitude 5x10^20 kg m/s
A monochromatic light source emits a wavelength of 490 nm in air. When passing through a liquid, What is the liquid's index of refraction
A 400lb woman stands on a floor in flat soled shoes. Which person is more likely to dent the floor
An electron moves from point A where the potential is Va=+20.0kV to point B where the potential is Vb=- 40.0 kV. what was the change of the system's electric potential
A small package rests on the horizontal dashboard of a car. If ?s = 0.275, what is the minimum acceleration of the car that will cause the package to slip off
A railroad car of mass 2.3 104 kg moving at 5.00 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
use the rule of exponents to simplify the expression 5412simplify this expression. write the answer with positive
A surface completely surrounds a 3.5 × 10-6 C charge. Find the electric flux through this surface when the surface is (a) a sphere with a radius of 0.59 m, (b) a sphere with a radius of 0.16 m, and (c) a cube with edges that are 0.27 m long.
assume a bar 2.5 m long expands 0.5 cm when heated. By how much will a bar 100 m long of the same material expand when similarly heated.
A worker pushes horizontally on a large crate with a force of 297 N, and the crate is moved 4.8 m. How much work was done.
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