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A thin, flat washer is a disk with an outer diameter of 14 cm and a hole in the center with a diameter of 3 cm. The washer has a uniform charge distribution and a total charge of 8 nC. What is the electric field on the axis of the washer at a distance of 28 cm from the center of the washer? (Enter the magnitude of the electric field.)
An interferometer is used to measure the length of a bacterium. The wavelength of the light used is 650 nm. How long is the bacterium
The weight of passengers on a roller coaster increases by 53 as the car goes through a dip with a 40 radius of curvature
You took a job as a space station scientist. On a spacewalk you get separated from the station. At what speed will you move back toward the station
Two bumper cars are driving directly toward one another. The first car, mass m1 = 150 kg, What is the total momentum of the system
The minimum distance required to stop a car moving at 34 mi/h is 42 ft. What is the minimum stopping distance for the same car moving at 64.0 mi/h, assuming the same rate of acceleration.
A car moving at 10 m/s crashes into a barrier and stops in 0.050 s. There is a 20 kg child in the car. Assume that the child's velocity is changed by the similar amount as the car's in the similar time period.
find the net rate of radiation by a pot at 35.7°C that has been placed in a -23.9°C freezer. The pot's surface area is 0.111 m2 and its emissivity is 0.655.
A fireman d = 46.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of θi = 38.0°, at what height will the stream of water strike the building
Find the de Broglie wavelength of electrons with kinetic energies of 30 eV. Answer all in pm. Find the de Broglie wavelength of electrons
A heavy ball with a weight of 100N (m= 10.2 kg) is hung from the ceiling of a lecture hall on a 4.5-m-long rope. What is the tension in the rope at that point
Three uniform spheres are located at the corners of an equilateral triangle. find the magnitude of the initial acceleration of the third sphere
What is the ratio of the dynamic viscosity of air to that of water at standard pressure and a temperature of 20?C? Find the ratio of the kinematic viscosity of air to that of water for the same condition?
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