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Two small objects are hung, from a point, on strings 50 cm long. they each have mass .06 grams and are given equal charges if the strings each make an angle of 37 degrees with a vertical, what is the magnitude of the electric force between the objects? What is the magnitude of the charge on each object?
The owner of a van installs a rear-window lens that has a focal length of -0.340 m. When the owner looks out through the lens at an object located directly behind the van, How far from the van is the object actually located
A 38.0 kg box initially at rest is pushed 4.00 m along a rough, horizontal floor with a constant applied horizontal force of 125 N. determine the final speed of the box
A grindstone of a radius 4 m is firstly spinning with a radius of 8 rad/s. The angular speed is then increased to 12 rad/s over next 4.0 seconds. Suppose that the angular acceleration is constant. What is the average angular speed of grindstone.
A double convex thin glass lens has equal radii of curvature. The focal length of the lens is +63.5 cm, find The index of refraction of the glass of the plano-convex lens
A 2.05 g ping-pong ball rubbed against a wool jacket acquires a net positive charge of 1.26 ?C. How many electrons were removed from the ping-pong ball
Illustrate what is the basis for the industry's legal duty to the surrounding community? In other words, illustrate what is the legal source of the industry's legal duty?
A copper ion with a single electron (denoted Cu28+) is in an excited state with radius the same as that of the ground state of hydrogen. How much energy in eV is needed to ionize the ion from this excited state
A rod of length ? with uniform charge per unit length ? , where ? > 0, is placed a distance d from the origin along the x axis, The segment is at a distance x from the origin, Determine the electric field
Write a complete set of equations from Kirchhoffs for the circuit -
The vertical displacement of particles in a string (when a wave is propagating through it) is given by y = (0.02) sin[(10?)t - (8?)x], where everything is measured in standard units, meters and seconds. What is the amplitude of the wave?
What harm, if any, would occur by rotating the spectacle lenses of a near-sighted person in their frames? What if the individual had an astigmatic correction
The position of an object as a function of time is r? =(3.2t+ 0.90 t2)i^+(1.7t? 1.2 t2)j^m, Find the object's magnitude of the acceleration and What is the direction of the acceleration
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