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An electrically neutral model airplane is flying in ahorizontal circle on a 3.0-m guideline, which is nearly parallel tothe ground. The line breaks when the kinetic energy of the plane is50.0J. Reconsider the same situation, except that now there is apoint charge of +q on the plane and a point charge of -q at the other end of the guideline. In this case, the line breaks when thekinetic energy of the plane is 51.8J. Find the magnitude of the charges.
The top of Mt. Everest is 8750 m above sea level. Assume that sea level is at an average Earth radius of 6.38×10^6 m. What is the magnitude of gravitational acceleration at the top of Mt. Everest? Mass of the Earth is 5.97×10^24 kg.
Direction of the surface winds What is the expected composition
The wavelength of the laser beam used in a compact disc player is 780 nm. Estimate the spacing between the slits of the grating
Suppose you want to make a rainbow by spraying mist from a garden hose into the air. Why can't you ever walk under the rainbow
A diver springs upward with an initial speed of 7 m/s from a diving board that is 2 m above the water. Find the total time the diver is airborne
Derive the electric potential V for a single current electrode placed at the surface of an isotropic medium. The current injects current I into the medium that has resistivity r. Assume that the air is non-conductive.
A square pool with 100-m-long sides is created in a concrete parking lot. The walls are concrete 72 cm thick and have a density of 2.5 g/cm3. The coefficient of static friction between the walls and the parking lot is 0.43. What is the maximum possib..
A charge +q is located at the origin, while an identical charge is located on the x axis at x = +0.76 m. Where should the third charge be located
A 2.0 kg cart has a spring with k = 5000 N/m attached to its front, parallel to the ground. What is the speed of each cart after the collision
The mass of mars is 6.419 times 10 26 square kg and the mass of a single proton is 1.673 times 10 negative 27 square kg. assuming mars is made entirely of protons, how various protons would make up mars.
A weather balloon has a volume 1.2 m^3 at sea level where the pressure is 101 kPa and the temperature is 20 C. When the balloon rises to an altitude of 11 km, the pressure is down to 50.5 kPa and the temperature is about -55 C. What is the volume of ..
A motorcycle, which has an initial linear speed of 6.4 m/s, decelerates to a speed of 1.5 m/s in 5.7 s. estimate the angular displacement (in rad) of each wheel
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