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A wire has a diameter of 0.200mm and stretches 20% when a force of 6.28 Newtons is applied to it. What is the elastic (Young's) modulus of this wire?
A 1.5 kg box moves back and forth on a horizontal surface with a coefficient of kinetic friction 0.18 between two different springs, 0.83 m apart. The box is initially pressed against the stronger spring (spring constant, k=32N/cm), compressing i..
Density of Aluminium is 2.7g/cm3 or 2.7g/ml. How heavy (in grams) would be the coke can if instead of soda it would be filled in with aluminium? The volume of a soda can is 303 ml.
A uniform, cylindrical pulley of mass M=14.4 kg and radius R=0.478 m rotates freely about a fixed horizontal axis. estimate the magnitude of the angular acceleration of the pulley
An electron with mass 9.11×10-31 kg moves with a speed of 2.00×106 m/s in a circle of 2.83 cm radius under the influence of a magnetic field. What is the radius of the proton's orbit
A space craft is designed to be rotating column, in order to simulate artifical gravity. find angular frequency must be maintained to simulate surface gravity
Now assume that a strong, uniform magnetic field of size 0.55 T pointing straight down is applied. What is the size of the magnetic force on the wire
A particle with charge q is at rest when a magnetic field is suddenly turned on. The field points in the z-direction. What is the direction of the net force acting on the charged particle
An inclined plane is sliding, and accelerating, on a horizontal frictionless surface. What is minimum acceleration of the inclined plane for the square block not to slide
if a far sighted person has a near point that is 0.600 m from the eye what is the focal length f2 of the contact lenses
If a 200 kg, 3 m radius merry-go-round was spinning at 1 rev/s and you dropped a 25 kg bag of sand vertically onto the edge of the platform, what is the angular speed
What's the difference between a rotational and a circular motion and Why does vertically falling rain make slanted streaks on the side windows of a moving auto
A child is sitting on the outer edge of a merry-go-round that is 18 m in diameter. If the merry-go-round makes 4.9 rev/min, what is the velocity of the child in m/s
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