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A horizontal meter stick has a mass of 213 g. Three weights ride on the meter stick: 263 g at 41.5 cm, 181 g at 77.3 cm, and 207 g at 99.7 cm. At what location on the meter stick would the system be in balance if it were suspended there?
Three point charges are located in the x-y plane. q1 = +78.2 nC at (0.0, -4.6 cm), q2 = -36.4 nC at (+5.8 cm, 0.0) and q3 = +77.4 nC at (-6.2 cm, +8.4 cm). Determine the magnitude of the net electric field at the origin
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 14.0cm , giving it a charge of -11.0μC. Find the electric field just outside the paint layer
Two cars collide at an intersection. Car A, with a mass of 2000kg , is going from west to east, How fast was car A going just before the collision
A stick is resting on a concrete step with 2/9 of its length hanging over the edge. find the magnitude of the angular acceleration of the stick
Two events in reference frame S occur 10?s apart at the same point in space. The distance between the two events is 2400 m in reference frame S?, What is the time interval between the events in reference frame S? ?
For a safe re-entry into the Earth's atmosphere, the pilots of a space capsule must reduce their speed from 2.6 × 104 m/s to 1.1 × 104 m/s. For how long must they fire their engine
Under such extreme conditions, protons and electrons are squeezed to form neutrons, giving birth to a neutron star. Neutron stars are massively heavy - a teaspoon of the substance of a neutron star would weigh
A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. He reports hearing two successive resonances at 50.5 Hz and 59.5 Hz. How deep is the well
A photon of wavelength .1 nm scatters from a free electron at rest. Find the wavelength of the scattered photon
Calculate the horizontal force that must be applied to create an acceleratrion of 1.8g for a 1.2kg puck on a horizontal friction-free air table.
A well-mixed sewage lagoon (a shallow pond) is receiving 430 m3- d-1 of sewage out of a sewer pipe. The lagoon has a surface area of 10 ha (hectares) and a depth of 1.0 m. The pollutant concentration in the raw sewage discharging into the lagoon i..
A person is pushing a wheelbarrow along a ramp that makes an angle ? = 25.0° with the horizontal. The wheelbarrow and load have a combined mass of 20.20 kg with the center of mass at the midpoint of the length L. What is the total force the person mu..
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