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An electrically neutral model airplane is flying in a horizontalcircle on a 3.0m guideline, which is nearly parallel to theground. The line breaks when the kinetic energy of the planeis 50.0 J. Reconsider the same situation, except that now there isa point charge of +q on the plane and a point charge of -q at theother end of the guideline. In this case, the line breakswhen the kinetic energy of the plane is 51.8 J. Find the magnitude of the charges.
Two fixed point charges are located along the x axis. A +8.5uC charge is placed at x=+3 cm and a -21uC is placed at x=9.0 cm.
The far point of a nearsighted person is 5.0 m from her eyes, and she wears contacts that enable her to see distant objects clearly. How high is the image formed by the contacts
A box has a partition with 10% of its volume one side. The larger section of the box contains 500 Ar atoms and the smaller 100He atoms. A small hole is put into the partition. At equilibrium, what is the mean number of atoms of each type?
In a Compton scattering experiment, an x-ray photon scatters through an angle of 18.0° from a free electron that is initially at rest. Calculate the angle through which the electron scatters
The captain of a boat wants to travel directly across a river that flows due east with a speed of 1.00 m/s. Estimate the speed of the boat relative to a person
Two disks of identical mass but different radii (r and 2r) are spinning on frictionless bearings at the same angular speed ?0, but in opposite directions. what is the change in the rotational kinetic energy
a 0.0250 kg bullet moving horizontally at 450 ms embeds itself into an initially stationary 0.500 kg block. the
A coiled telephone cord forms a spiral with 56 turns, a diameter of 1.30 cm, and an unstretched length of 60.0 cm. Determine the self-inductance of one conductor in the unstretched cord.
An object weighing 305 N in air is immersed in water after beingtied to a string connected to a balance. The scale now reads 271 N.Immersed in oil, the object appears to weigh 278 N . The density ofthe object is 8970.588 kg/m^3. Find the density of t..
a moon circles distant planet with an orbit radius 6.93*10^8 m and period of 4.22 days around the planet. From this information compute the mass of this planet
compute the force and the total work required in each case. Find the tension in each of the cables.
Given a pair of forces, one with magnitude 27.3 N at an angle of 24 degrees clockwise from the +x direction and the other with magnitude 15.7 N exactly in the +x direction: Find the direction of the acceleration
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