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A 75 kilogram astronaut is space walking outside the space shuttle and pushes a 400 kilogram satellite away from the shuttle at 1.5 m/s. Find the resulting speed of the astronaut back towards the shuttle?
A 50kg woman is in a rotor with a 2m radius, laying against theinner surface. The friction between the woman’s sweater andthe surface is μs = 0.5. (a) The rotor begins spinning with aconstant angular acceleration α, and when the rotor reachesenoug..
Physics - Classical Mechanics : explained, A student could either pull or push, at an angle of 300 from the horizontal, a 50-kg crate on a horizontal surface, where the coefficient of kinetic friction between the crate and surface is 0.20. The cra..
A certain person in a typical conversation speaks at a soundlevel of 63 dB. The music at a certain rock concert reaches a soundlevel of 110 dB. How many times as great is the intensity of the music?
Each cable has a length of l = 2.70 -{rm m}. What is the tension T in each of the cables? Use 9.80- {rm m/s}^2 for the magnitude of the acceleration as a result of gravity.
A spring has a force constant of 16 N/cm. How much work is needed to extend the spring an additional 7.6 mm
A box that weighs 300 N is pulled across a level surface with a constant velocity. What is the normal force of the floor on the box
compute the linear speed due to the Earth's rotation for a person at a point on its surface located at 40o N latitude (this would be near the Ohio river valley, for instance). The radius of the Earth is 6.40 ξ 106 m. (For comparison, the speed of ..
A laboratory ultracentrifuge is designed to produce a centripetal acceleration of 5.0 x 10^6 g at a distance of 4.00cm from the axis. What angular velocity in rev/min is necessary.
Calculate the eccentricity, e, of a planet's orbit around a central star if the ratio of its gravitational potential energies at the aphelion and at the perihelion is ? = 0.175
If 61.5 L of oxygen at 18C and an absolute pressure of 2.45 atm are compressed to 48.8L and at the same time the temperature is raised to 56 degrees C, what will the new pressure be
Two liquids, A and B, are mixed together, and the resulting temp is 22C. If liquid A has mass m and was initially at temp 35C, and liquid B has mass 3m and was initially at temp 11C, cacluatle the ratio of the specific heats of..
the top surface of the passenger car of a train moving at a velocity of 70 kmh is 2.8 m wide and 8 m long heat transfer
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