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There is a uniform charge distribution of ? = 8.12 10-8 C/m along a thin wire of length L = 5.94 cm. The wire is then curved into a semicircle that is centered about the origin, so the radius of the semicircle is R = L/?. Find the magnitude of the electric field at the center of the semicircle.
Electrons accelerated by a potential difference of 12.43 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the shortest possible wavelength
A 64-kg skier is going down a slope oriented 36° above the horizontal. Determine the pressure that each ski exerts on the snow
q1. one type of steel has a density of 8000 and a breaking stress of 6.9times108. a cylindrical guitar string is to be
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?
A 64-kg runner rounds a circular track of radius 63.7 m at a constant 5.30 m/s. Find the magnitude of her momentum changes after she has gone one-fourth of the circle
1.what morphologic characteristics of Hyacotherium suggest that it lived in thick, closed canopy forest 2. How did the increase in grasslands beginning in the miocene influence the morphology of horse teeth and jaw
A 1130 kg car traveling initially with a speed of 25.60 m/s in an easterly direction crashes into the back of a 9 550 kg truck moving in the same direction at 20.0 m/s. What was the velocity of the truck right after the collision
q1. a 36.0 kg uniform beam is attached to a wall with the hinge while its far end is supported by a cable such that the
A 2.90 m long, 320 kg steel beam extends horizontally from the point where it has been bolted to the framework of the new building under construction. A 66 kg construction worker stands at the far end of the beam.
What is the speed of the 2 cars as they move together after the collision.
Consider an airplane window (area 0.29 m2). If the pressure inside the plane is atmospheric pressure and the pressure outside is 22% of Patm, what is the force on the window
A body of mass 2.9 kg makes an elastic collision with another body at rest and continues to move in the original direction but with one-fourth of its original speed. What is the mass of the other body
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