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A helicopter propeller blade starts from rest and experiencesa constant angular acceleration of 24.0 rad/s2. What is the speed of apoint on the blade 5.45 m fromthe axis of rotation when the blade has completed 18 revolutions?
What is the center of gravity? How can you find it in various objects? How dooes it effect the equilibrium of an object, What are the types of stability
Three charged particles are placed at each of three corner of an equilateral triangle whose sides are of length 2.5 c.m. What is the net electric force acting on particle
Studies have shown that some people can detect 577 nm light with as few as 100 photons enteringthe eye per second. What is the power delivered by such a beam of light
a dog wishes to swim across a slow moving stream. the dog can swim at 2.0ms in calm water. the current velocity is
A centripetal force of 205 N acts on a 1,350-kg satellite moving with a speed of 4,900 m/s in a circular orbit around a planet. What is the radius of its orbit
A nonconducting solid sphere of radius 11.6 cm has a uniform volume charge density. What is the sphere's volume charge density
A cylinder is rolling along the ground without the slipping at 7m/s. It comes to a hill and begins going up. Assuming no losses to friction, how high vertically would it go before it stops.
A 9.0 cm-diameter disk emits light uniformly from its surface. 20 cm from this disk, along its axis, is an 7.0 cm-diameter opaque black disk; the faces of the two disks are parallel. 20 cm beyond the black disk is a white viewing screen. The light..
a proton has an initial speed of 3.5 105 ms. a what potential difference is required to bring the proton to rest? b
A person who weighs 635 N is riding a 98 N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in each tire is 7.25 105 Pa, what is the area of contact between each tire and the ..
An electrically charged bullet of mass 0.010 kg leaves thebarrel of a gun traveling parallel to the ground and perpendicularto the Earth's magnetic field at 1.400e+3 m/s. Intheory, what charge could the bullet carry in order to remain at aconstant..
Two stars are 2.1 Ã- 1011 m apart and are equally distant from the earth. Find the maximum distance that these stars could be from the earth
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